Move core/* to base/* + add conditional compilation to dynamics matrices when no_std is enabled.

CHANGELOG.md

@@ -5,7 +5,21 @@ documented here.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [0.15.0] - WIP
+The most notable change of this release is the support for using part of the library without the rust standard
+library (i.e. it supports `#![no_std]`). Use the following in your `Cargo.toml` to work with a version of
+nalgebra that does not rely on libstd:
+```toml
+#[dependencies]
+nalgebra = { version = "0.15", default_features = false }
+```
+Some feature are no longer available when libstd is not used:
+  * Support for dynamically-sized matrices.
+  * Support for the `::new_random()` matrix constructor.
+  * Support for the `.resize(...)` method since it returns a dynamically-sized matrix.
+All other feature, including matrix factorizations, will still work on statically-sized matrices!
 ### Modified
+  * Rename the `core` module to `base` to avoid conflicts with the `core` crate implicitly imported when
+    `#![no_std]` is enabled.
   * Constructors of the `MatrixSlice*` types have been renamed from `new_*` to `from_slice_*`. This was
     necessary to avoid the `incoherent_fundamental_impls` lint that is going to become a hard error.
 ### Added

Cargo.toml

@@ -16,24 +16,26 @@ name = "nalgebra"
 path = "src/lib.rs"
 
 [features]
+default = [ "std" ]
+std = [ "matrixmultiply" ]
 arbitrary       = [ "quickcheck" ]
 serde-serialize = [ "serde", "serde_derive", "num-complex/serde" ]
 abomonation-serialize = [ "abomonation" ]
 debug = [ ]
 
 [dependencies]
-typenum        = "1.7"
+typenum        = "1.10"
-generic-array  = "0.8"
+generic-array  = "0.11"
-rand           = "0.4"
+rand           = { version = "0.4", default-features = false }
-num-traits     = "0.1"
+num-traits     = { version = "0.2", default-features = false }
-num-complex    = { version = "0.1", default-features = false }
+num-complex    = { version = "0.2.0-git", git = "https://github.com/rust-num/num-complex", default-features = false }
-approx         = "0.1"
+approx         = { version = "0.1", default-features = false }
-alga           = "0.5"
+alga           = { version = "0.5", default-features = false }
-matrixmultiply = "0.1"
+matrixmultiply = { version = "0.1", optional = true }
 serde          = { version = "1.0", optional = true }
 serde_derive   = { version = "1.0", optional = true }
 abomonation    = { version = "0.4", optional = true }
-mint           = { version = "0.4.2", optional = true }
+mint           = { version = "0.5", optional = true }
 
 [dependencies.quickcheck]
 optional = true

src/base/alias.rs

@@ -1,7 +1,8 @@
-use core::Matrix;
+use base::dimension::{Dynamic, U1, U2, U3, U4, U5, U6};
-use core::dimension::{Dynamic, U1, U2, U3, U4, U5, U6};
+#[cfg(any(feature = "std", feature = "alloc"))]
-use core::matrix_vec::MatrixVec;
+use base::matrix_vec::MatrixVec;
-use core::storage::Owned;
+use base::storage::Owned;
+use base::Matrix;
 
 /*
  *
@@ -21,6 +22,7 @@ pub type MatrixMN<N, R, C> = Matrix<N, R, C, Owned<N, R, C>>;
 pub type MatrixN<N, D> = MatrixMN<N, D, D>;
 
 /// A dynamically sized column-major matrix.
+#[cfg(any(feature = "std", feature = "alloc"))]
 pub type DMatrix<N> = MatrixN<N, Dynamic>;
 
 /// A stack-allocated, column-major, 1x1 square matrix.
@@ -114,6 +116,7 @@ pub type Matrix6x5<N> = MatrixMN<N, U6, U5>;
  *
  */
 /// A dynamically sized column vector.
+#[cfg(any(feature = "std", feature = "alloc"))]
 pub type DVector<N> = Matrix<N, Dynamic, U1, MatrixVec<N, Dynamic, U1>>;
 
 /// A statically sized D-dimensional column vector.
@@ -140,6 +143,7 @@ pub type Vector6<N> = VectorN<N, U6>;
  *
  */
 /// A dynamically sized row vector.
+#[cfg(any(feature = "std", feature = "alloc"))]
 pub type RowDVector<N> = Matrix<N, U1, Dynamic, MatrixVec<N, U1, Dynamic>>;
 
 /// A statically sized D-dimensional row vector.

src/base/alias_slice.rs

@@ -1,6 +1,6 @@
-use core::Matrix;
+use base::Matrix;
-use core::dimension::{Dynamic, U1, U2, U3, U4, U5, U6};
+use base::dimension::{Dynamic, U1, U2, U3, U4, U5, U6};
-use core::matrix_slice::{SliceStorage, SliceStorageMut};
+use base::matrix_slice::{SliceStorage, SliceStorageMut};
 
 /*
  *

src/base/allocator.rs

@@ -2,10 +2,10 @@
 
 use std::any::Any;
 
-use core::{DefaultAllocator, Scalar};
+use base::{DefaultAllocator, Scalar};
-use core::constraint::{SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
+use base::constraint::{SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
-use core::dimension::{Dim, U1};
+use base::dimension::{Dim, U1};
-use core::storage::ContiguousStorageMut;
+use base::storage::ContiguousStorageMut;
 
 /// A matrix allocator of a memory buffer that may contain `R::to_usize() * C::to_usize()`
 /// elements of type `N`.

src/base/blas.rs

@@ -1,14 +1,16 @@
-use std::mem;
-use num::{One, Signed, Zero};
-use matrixmultiply;
 use alga::general::{ClosedAdd, ClosedMul};
+#[cfg(feature = "std")]
+use matrixmultiply;
+use num::{One, Signed, Zero};
+use std::mem;
 
-use core::{DefaultAllocator, Matrix, Scalar, SquareMatrix, Vector};
+use base::allocator::Allocator;
-use core::dimension::{Dim, Dynamic, U1, U2, U3, U4};
+use base::constraint::{
-use core::constraint::{AreMultipliable, DimEq, SameNumberOfColumns, SameNumberOfRows,
+    AreMultipliable, DimEq, SameNumberOfColumns, SameNumberOfRows, ShapeConstraint,
-                       ShapeConstraint};
+};
-use core::storage::{Storage, StorageMut};
+use base::dimension::{Dim, Dynamic, U1, U2, U3, U4};
-use core::allocator::Allocator;
+use base::storage::{Storage, StorageMut};
+use base::{DefaultAllocator, Matrix, Scalar, SquareMatrix, Vector};
 
 impl<N: Scalar + PartialOrd + Signed, D: Dim, S: Storage<N, D>> Vector<N, D, S> {
     /// Computes the index of the vector component with the largest absolute value.
@@ -457,7 +459,12 @@ where
             + SameNumberOfColumns<C1, C3>
             + AreMultipliable<R2, C2, R3, C3>,
     {
-        let (nrows1, ncols1) = self.shape();
+        let ncols1 = self.shape();
+
+        #[cfg(feature = "std")]
+        {
+            // matrixmultiply can be used only if the std feature is available.
+            let nrows1 = self.nrows();
             let (nrows2, ncols2) = a.shape();
             let (nrows3, ncols3) = b.shape();
 
@@ -531,13 +538,16 @@ where
                         );
                     }
                 }
-        } else {
+
+                return;
+            }
+        }
+
         for j1 in 0..ncols1 {
             // FIXME: avoid bound checks.
             self.column_mut(j1).gemv(alpha, a, &b.column(j1), beta);
         }
     }
-    }
 
     /// Computes `self = alpha * a.transpose() * b + beta * self`, where `a, b, self` are matrices.
     /// `alpha` and `beta` are scalar.
@@ -698,10 +708,8 @@ where
         S2: StorageMut<N, D2>,
         S3: Storage<N, D3, D3>,
         S4: Storage<N, R4, C4>,
-        ShapeConstraint: DimEq<D3, R4>
+        ShapeConstraint:
-            + DimEq<D1, C4>
+            DimEq<D3, R4> + DimEq<D1, C4> + DimEq<D2, D3> + AreMultipliable<C4, R4, D2, U1>,
-            + DimEq<D2, D3>
-            + AreMultipliable<C4, R4, D2, U1>,
     {
         work.gemv(N::one(), mid, &rhs.column(0), N::zero());
         self.column_mut(0).gemv_tr(alpha, &rhs, work, beta);

src/base/cg.rs

@@ -7,11 +7,11 @@
 
 use num::One;
 
-use core::{DefaultAllocator, Matrix3, Matrix4, MatrixN, Scalar, SquareMatrix, Unit, Vector,
+use base::{DefaultAllocator, Matrix3, Matrix4, MatrixN, Scalar, SquareMatrix, Unit, Vector,
            Vector3, VectorN};
-use core::dimension::{DimName, DimNameDiff, DimNameSub, U1};
+use base::dimension::{DimName, DimNameDiff, DimNameSub, U1};
-use core::storage::{Storage, StorageMut};
+use base::storage::{Storage, StorageMut};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 use geometry::{Isometry, IsometryMatrix3, Orthographic3, Perspective3, Point, Point3, Rotation2,
                Rotation3};
 

src/base/componentwise.rs

@@ -1,15 +1,15 @@
 // Non-convensional componentwise operators.
 
-use std::ops::{Add, Mul};
 use num::{Signed, Zero};
+use std::ops::{Add, Mul};
 
 use alga::general::{ClosedDiv, ClosedMul};
 
-use core::{DefaultAllocator, Matrix, MatrixMN, MatrixSum, Scalar};
+use base::allocator::{Allocator, SameShapeAllocator};
-use core::dimension::Dim;
+use base::constraint::{SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
-use core::storage::{Storage, StorageMut};
+use base::dimension::Dim;
-use core::allocator::{Allocator, SameShapeAllocator};
+use base::storage::{Storage, StorageMut};
-use core::constraint::{SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
+use base::{DefaultAllocator, Matrix, MatrixMN, MatrixSum, Scalar};
 
 /// The type of the result of a matrix componentwise operation.
 pub type MatrixComponentOp<N, R1, C1, R2, C2> = MatrixSum<N, R1, C1, R2, C2>;

src/base/constraint.rs

@@ -1,6 +1,6 @@
 //! Compatibility constraints between matrix shapes, e.g., for addition or multiplication.
 
-use core::dimension::{Dim, DimName, Dynamic};
+use base::dimension::{Dim, DimName, Dynamic};
 
 /// A type used in `where` clauses for enforcing constraints.
 pub struct ShapeConstraint;

src/base/construction.rs

@@ -1,5 +1,5 @@
 #[cfg(feature = "arbitrary")]
-use core::storage::Owned;
+use base::storage::Owned;
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
 
@@ -10,10 +10,10 @@ use typenum::{self, Cmp, Greater};
 
 use alga::general::{ClosedAdd, ClosedMul};
 
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{Dim, DimName, Dynamic, U1, U2, U3, U4, U5, U6};
+use base::dimension::{Dim, DimName, Dynamic, U1, U2, U3, U4, U5, U6};
-use core::storage::Storage;
+use base::storage::Storage;
-use core::{DefaultAllocator, Matrix, MatrixMN, MatrixN, Scalar, Unit, Vector, VectorN};
+use base::{DefaultAllocator, Matrix, MatrixMN, MatrixN, Scalar, Unit, Vector, VectorN};
 
 /*
  *
@@ -228,6 +228,7 @@ where
 
     /// Creates a matrix filled with random values.
     #[inline]
+    #[cfg(feature = "std")]
     pub fn new_random_generic(nrows: R, ncols: C) -> Self
     where
         N: Rand,
@@ -384,6 +385,7 @@ macro_rules! impl_constructors(
 
             /// Creates a matrix filled with random values.
             #[inline]
+            #[cfg(feature = "std")]
             pub fn new_random($($args: usize),*) -> Self {
                 Self::new_random_generic($($gargs),*)
             }

src/base/construction_slice.rs

@@ -1,6 +1,6 @@
-use core::dimension::{Dim, DimName, Dynamic, U1};
+use base::dimension::{Dim, DimName, Dynamic, U1};
-use core::matrix_slice::{SliceStorage, SliceStorageMut};
+use base::matrix_slice::{SliceStorage, SliceStorageMut};
-use core::{MatrixSliceMN, MatrixSliceMutMN, Scalar};
+use base::{MatrixSliceMN, MatrixSliceMutMN, Scalar};
 
 /*
  *

src/base/construction_slice_deprecated.rs

@@ -1,6 +1,6 @@
-use core::{MatrixSliceMN, MatrixSliceMutMN, Scalar};
+use base::dimension::{Dim, DimName, Dynamic, U1};
-use core::dimension::{Dim, DimName, Dynamic, U1};
+use base::matrix_slice::{SliceStorage, SliceStorageMut};
-use core::matrix_slice::{SliceStorage, SliceStorageMut};
+use base::{MatrixSliceMN, MatrixSliceMutMN, Scalar};
 
 /*
  *
@@ -15,7 +15,9 @@ impl<'a, N: Scalar, R: Dim, C: Dim, RStride: Dim, CStride: Dim>
     /// This method is unsafe because the input data array is not checked to contain enough elements.
     /// The generic types `R`, `C`, `RStride`, `CStride` can either be type-level integers or integers wrapped with `Dynamic::new()`.
     #[inline]
-    #[deprecated(note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_with_strides_generic_unchecked instead.")]
+    #[deprecated(
+        note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_with_strides_generic_unchecked instead."
+    )]
     pub unsafe fn new_with_strides_generic_unchecked(
         data: &'a [N],
         start: usize,
@@ -37,7 +39,9 @@ impl<'a, N: Scalar, R: Dim, C: Dim, RStride: Dim, CStride: Dim>
     /// Panics if the input data array dose not contain enough elements.
     /// The generic types `R`, `C`, `RStride`, `CStride` can either be type-level integers or integers wrapped with `Dynamic::new()`.
     #[inline]
-    #[deprecated(note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_with_strides_generic instead.")]
+    #[deprecated(
+        note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_with_strides_generic instead."
+    )]
     pub fn new_with_strides_generic(
         data: &'a [N],
         nrows: R,
@@ -54,7 +58,9 @@ impl<'a, N: Scalar, R: Dim, C: Dim, RStride: Dim, CStride: Dim>
             "Matrix slice: input data buffer to small."
         );
 
-        unsafe { Self::from_slice_with_strides_generic_unchecked(data, 0, nrows, ncols, rstride, cstride) }
+        unsafe {
+            Self::from_slice_with_strides_generic_unchecked(data, 0, nrows, ncols, rstride, cstride)
+        }
     }
 }
 
@@ -66,7 +72,9 @@ impl<'a, N: Scalar, R: Dim, C: Dim, RStride: Dim, CStride: Dim>
     /// This method is unsafe because the input data array is not checked to contain enough elements.
     /// The generic types `R`, `C`, `RStride`, `CStride` can either be type-level integers or integers wrapped with `Dynamic::new()`.
     #[inline]
-    #[deprecated(note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_with_strides_generic_unchecked instead.")]
+    #[deprecated(
+        note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_with_strides_generic_unchecked instead."
+    )]
     pub unsafe fn new_with_strides_generic_mut_unchecked(
         data: &'a mut [N],
         start: usize,
@@ -88,7 +96,9 @@ impl<'a, N: Scalar, R: Dim, C: Dim, RStride: Dim, CStride: Dim>
     /// Panics if the input data array dose not contain enough elements.
     /// The generic types `R`, `C`, `RStride`, `CStride` can either be type-level integers or integers wrapped with `Dynamic::new()`.
     #[inline]
-    #[deprecated(note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_with_strides_generic instead.")]
+    #[deprecated(
+        note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_with_strides_generic instead."
+    )]
     pub fn new_with_strides_generic_mut(
         data: &'a mut [N],
         nrows: R,
@@ -117,7 +127,9 @@ impl<'a, N: Scalar, R: Dim, C: Dim> MatrixSliceMN<'a, N, R, C> {
     /// This method is unsafe because the input data array is not checked to contain enough elements.
     /// The generic types `R` and `C` can either be type-level integers or integers wrapped with `Dynamic::new()`.
     #[inline]
-    #[deprecated(note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_generic_unchecked instead.")]
+    #[deprecated(
+        note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_generic_unchecked instead."
+    )]
     pub unsafe fn new_generic_unchecked(data: &'a [N], start: usize, nrows: R, ncols: C) -> Self {
         Self::from_slice_with_strides_generic_unchecked(data, start, nrows, ncols, U1, nrows)
     }
@@ -127,7 +139,9 @@ impl<'a, N: Scalar, R: Dim, C: Dim> MatrixSliceMN<'a, N, R, C> {
     /// Panics if the input data array dose not contain enough elements.
     /// The generic types `R` and `C` can either be type-level integers or integers wrapped with `Dynamic::new()`.
     #[inline]
-    #[deprecated(note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_generic instead.")]
+    #[deprecated(
+        note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_generic instead."
+    )]
     pub fn new_generic(data: &'a [N], nrows: R, ncols: C) -> Self {
         Self::from_slice_with_strides_generic(data, nrows, ncols, U1, nrows)
     }
@@ -139,7 +153,9 @@ impl<'a, N: Scalar, R: Dim, C: Dim> MatrixSliceMutMN<'a, N, R, C> {
     /// This method is unsafe because the input data array is not checked to contain enough elements.
     /// The generic types `R` and `C` can either be type-level integers or integers wrapped with `Dynamic::new()`.
     #[inline]
-    #[deprecated(note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_generic_unchecked instead.")]
+    #[deprecated(
+        note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_generic_unchecked instead."
+    )]
     pub unsafe fn new_generic_mut_unchecked(
         data: &'a mut [N],
         start: usize,
@@ -154,7 +170,9 @@ impl<'a, N: Scalar, R: Dim, C: Dim> MatrixSliceMutMN<'a, N, R, C> {
     /// Panics if the input data array dose not contain enough elements.
     /// The generic types `R` and `C` can either be type-level integers or integers wrapped with `Dynamic::new()`.
     #[inline]
-    #[deprecated(note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_generic instead.")]
+    #[deprecated(
+        note = "This constructor is being removed to avoid the incoherent_fundamental_impls lint error. Use ::from_slice_generic instead."
+    )]
     pub fn new_generic_mut(data: &'a mut [N], nrows: R, ncols: C) -> Self {
         Self::from_slice_with_strides_generic(data, nrows, ncols, U1, nrows)
     }

src/base/conversion.rs

@@ -1,16 +1,16 @@
-use std::ptr;
-use std::mem;
-use std::convert::{AsMut, AsRef, From, Into};
 use alga::general::{SubsetOf, SupersetOf};
 #[cfg(feature = "mint")]
 use mint;
+use std::convert::{AsMut, AsRef, From, Into};
+use std::mem;
+use std::ptr;
 
-use core::{DefaultAllocator, Matrix, MatrixMN, Scalar};
+use base::allocator::{Allocator, SameShapeAllocator};
-use core::dimension::{Dim, U1, U10, U11, U12, U13, U14, U15, U16, U2, U3, U4, U5, U6, U7, U8, U9};
+use base::constraint::{SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
-use core::iter::{MatrixIter, MatrixIterMut};
+use base::dimension::{Dim, U1, U10, U11, U12, U13, U14, U15, U16, U2, U3, U4, U5, U6, U7, U8, U9};
-use core::constraint::{SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
+use base::iter::{MatrixIter, MatrixIterMut};
-use core::storage::{ContiguousStorage, ContiguousStorageMut, Storage, StorageMut};
+use base::storage::{ContiguousStorage, ContiguousStorageMut, Storage, StorageMut};
-use core::allocator::{Allocator, SameShapeAllocator};
+use base::{DefaultAllocator, Matrix, MatrixMN, Scalar};
 
 // FIXME: too bad this won't work allo slice conversions.
 impl<N1, N2, R1, C1, R2, C2> SubsetOf<MatrixMN<N2, R2, C2>> for MatrixMN<N1, R1, C1>
@@ -21,9 +21,8 @@ where
     C2: Dim,
     N1: Scalar,
     N2: Scalar + SupersetOf<N1>,
-    DefaultAllocator: Allocator<N2, R2, C2>
+    DefaultAllocator:
-        + Allocator<N1, R1, C1>
+        Allocator<N2, R2, C2> + Allocator<N1, R1, C1> + SameShapeAllocator<N1, R1, C1, R2, C2>,
-        + SameShapeAllocator<N1, R1, C1, R2, C2>,
     ShapeConstraint: SameNumberOfRows<R1, R2> + SameNumberOfColumns<C1, C2>,
 {
     #[inline]
@@ -75,7 +74,8 @@ impl<'a, N: Scalar, R: Dim, C: Dim, S: Storage<N, R, C>> IntoIterator for &'a Ma
 }
 
 impl<'a, N: Scalar, R: Dim, C: Dim, S: StorageMut<N, R, C>> IntoIterator
-    for &'a mut Matrix<N, R, C, S> {
+    for &'a mut Matrix<N, R, C, S>
+{
     type Item = &'a mut N;
     type IntoIter = MatrixIterMut<'a, N, R, C, S>;
 

src/base/coordinates.rs

@@ -7,9 +7,9 @@
 use std::mem;
 use std::ops::{Deref, DerefMut};
 
-use core::{Matrix, Scalar};
+use base::{Matrix, Scalar};
-use core::dimension::{U1, U2, U3, U4, U5, U6};
+use base::dimension::{U1, U2, U3, U4, U5, U6};
-use core::storage::{ContiguousStorage, ContiguousStorageMut};
+use base::storage::{ContiguousStorage, ContiguousStorageMut};
 
 /*
  *

src/base/default_allocator.rs

@@ -3,20 +3,21 @@
 //! This will use stack-allocated buffers for matrices with dimensions known at compile-time, and
 //! heap-allocated buffers for matrices with at least one dimension unknown at compile-time.
 
-use std::mem;
-use std::ptr;
 use std::cmp;
+use std::mem;
 use std::ops::Mul;
+use std::ptr;
 
-use typenum::Prod;
 use generic_array::ArrayLength;
+use typenum::Prod;
 
-use core::Scalar;
+use base::allocator::{Allocator, Reallocator};
-use core::dimension::{Dim, DimName, Dynamic};
+use base::dimension::{Dim, DimName, Dynamic};
-use core::allocator::{Allocator, Reallocator};
+use base::matrix_array::MatrixArray;
-use core::storage::{Storage, StorageMut};
+#[cfg(any(feature = "std", feature = "alloc"))]
-use core::matrix_array::MatrixArray;
+use base::matrix_vec::MatrixVec;
-use core::matrix_vec::MatrixVec;
+use base::storage::{Storage, StorageMut};
+use base::Scalar;
 
 /*
  *
@@ -68,6 +69,7 @@ where
 
 // Dynamic - Static
 // Dynamic - Dynamic
+#[cfg(any(feature = "std", feature = "alloc"))]
 impl<N: Scalar, C: Dim> Allocator<N, Dynamic, C> for DefaultAllocator {
     type Buffer = MatrixVec<N, Dynamic, C>;
 
@@ -97,6 +99,7 @@ impl<N: Scalar, C: Dim> Allocator<N, Dynamic, C> for DefaultAllocator {
 }
 
 // Static - Dynamic
+#[cfg(any(feature = "std", feature = "alloc"))]
 impl<N: Scalar, R: DimName> Allocator<N, R, Dynamic> for DefaultAllocator {
     type Buffer = MatrixVec<N, R, Dynamic>;
 
@@ -160,6 +163,7 @@ where
 }
 
 // Static × Static -> Dynamic × Any
+#[cfg(any(feature = "std", feature = "alloc"))]
 impl<N: Scalar, RFrom, CFrom, CTo> Reallocator<N, RFrom, CFrom, Dynamic, CTo> for DefaultAllocator
 where
     RFrom: DimName,
@@ -187,6 +191,7 @@ where
 }
 
 // Static × Static -> Static × Dynamic
+#[cfg(any(feature = "std", feature = "alloc"))]
 impl<N: Scalar, RFrom, CFrom, RTo> Reallocator<N, RFrom, CFrom, RTo, Dynamic> for DefaultAllocator
 where
     RFrom: DimName,
@@ -214,8 +219,10 @@ where
 }
 
 // All conversion from a dynamic buffer to a dynamic buffer.
+#[cfg(any(feature = "std", feature = "alloc"))]
 impl<N: Scalar, CFrom: Dim, CTo: Dim> Reallocator<N, Dynamic, CFrom, Dynamic, CTo>
-    for DefaultAllocator {
+    for DefaultAllocator
+{
     #[inline]
     unsafe fn reallocate_copy(
         rto: Dynamic,
@@ -227,8 +234,10 @@ impl<N: Scalar, CFrom: Dim, CTo: Dim> Reallocator<N, Dynamic, CFrom, Dynamic, CT
     }
 }
 
+#[cfg(any(feature = "std", feature = "alloc"))]
 impl<N: Scalar, CFrom: Dim, RTo: DimName> Reallocator<N, Dynamic, CFrom, RTo, Dynamic>
-    for DefaultAllocator {
+    for DefaultAllocator
+{
     #[inline]
     unsafe fn reallocate_copy(
         rto: RTo,
@@ -240,8 +249,10 @@ impl<N: Scalar, CFrom: Dim, RTo: DimName> Reallocator<N, Dynamic, CFrom, RTo, Dy
     }
 }
 
+#[cfg(any(feature = "std", feature = "alloc"))]
 impl<N: Scalar, RFrom: DimName, CTo: Dim> Reallocator<N, RFrom, Dynamic, Dynamic, CTo>
-    for DefaultAllocator {
+    for DefaultAllocator
+{
     #[inline]
     unsafe fn reallocate_copy(
         rto: Dynamic,
@@ -253,8 +264,10 @@ impl<N: Scalar, RFrom: DimName, CTo: Dim> Reallocator<N, RFrom, Dynamic, Dynamic
     }
 }
 
+#[cfg(any(feature = "std", feature = "alloc"))]
 impl<N: Scalar, RFrom: DimName, RTo: DimName> Reallocator<N, RFrom, Dynamic, RTo, Dynamic>
-    for DefaultAllocator {
+    for DefaultAllocator
+{
     #[inline]
     unsafe fn reallocate_copy(
         rto: RTo,

src/base/edition.rs

@@ -2,12 +2,15 @@ use num::{One, Zero};
 use std::cmp;
 use std::ptr;
 
-use core::{DMatrix, DefaultAllocator, Matrix, MatrixMN, RowVector, Scalar, Vector};
+use base::allocator::{Allocator, Reallocator};
-use core::dimension::{Dim, DimAdd, DimDiff, DimMin, DimMinimum, DimName, DimSub, DimSum, Dynamic,
+use base::constraint::{DimEq, SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
-                      U1};
+use base::dimension::{
-use core::constraint::{DimEq, SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
+    Dim, DimAdd, DimDiff, DimMin, DimMinimum, DimName, DimSub, DimSum, Dynamic, U1,
-use core::allocator::{Allocator, Reallocator};
+};
-use core::storage::{Storage, StorageMut};
+use base::storage::{Storage, StorageMut};
+#[cfg(any(feature = "std", feature = "alloc"))]
+use base::DMatrix;
+use base::{DefaultAllocator, Matrix, MatrixMN, RowVector, Scalar, Vector};
 
 impl<N: Scalar + Zero, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
     /// Extracts the upper triangular part of this matrix (including the diagonal).
@@ -544,6 +547,7 @@ impl<N: Scalar, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
     ///
     /// The values are copied such that `self[(i, j)] == result[(i, j)]`. If the result has more
     /// rows and/or columns than `self`, then the extra rows or columns are filled with `val`.
+    #[cfg(any(feature = "std", feature = "alloc"))]
     pub fn resize(self, new_nrows: usize, new_ncols: usize, val: N) -> DMatrix<N>
     where
         DefaultAllocator: Reallocator<N, R, C, Dynamic, Dynamic>,
@@ -600,15 +604,11 @@ impl<N: Scalar, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
                         nrows - new_nrows.value(),
                     );
                     res = Matrix::from_data(DefaultAllocator::reallocate_copy(
-                        new_nrows,
+                        new_nrows, new_ncols, data,
-                        new_ncols,
-                        data,
                     ));
                 } else {
                     res = Matrix::from_data(DefaultAllocator::reallocate_copy(
-                        new_nrows,
+                        new_nrows, new_ncols, data,
-                        new_ncols,
-                        data,
                     ));
                     extend_rows(
                         &mut res.data.as_mut_slice(),

src/base/iter.rs

@@ -3,9 +3,9 @@
 use std::marker::PhantomData;
 use std::mem;
 
-use core::Scalar;
+use base::Scalar;
-use core::dimension::Dim;
+use base::dimension::Dim;
-use core::storage::{Storage, StorageMut};
+use base::storage::{Storage, StorageMut};
 
 macro_rules! iterator {
     (struct $Name:ident for $Storage:ident.$ptr: ident -> $Ptr:ty, $Ref:ty, $SRef: ty) => {

src/base/matrix.rs

@@ -16,14 +16,14 @@ use abomonation::Abomonation;
 
 use alga::general::{Real, Ring};
 
-use core::allocator::{Allocator, SameShapeAllocator, SameShapeC, SameShapeR};
+use base::allocator::{Allocator, SameShapeAllocator, SameShapeC, SameShapeR};
-use core::constraint::{DimEq, SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
+use base::constraint::{DimEq, SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
-use core::dimension::{Dim, DimAdd, DimSum, U1, U2, U3};
+use base::dimension::{Dim, DimAdd, DimSum, U1, U2, U3};
-use core::iter::{MatrixIter, MatrixIterMut};
+use base::iter::{MatrixIter, MatrixIterMut};
-use core::storage::{
+use base::storage::{
     ContiguousStorage, ContiguousStorageMut, Owned, SameShapeStorage, Storage, StorageMut,
 };
-use core::{DefaultAllocator, MatrixMN, MatrixN, Scalar, Unit, VectorN};
+use base::{DefaultAllocator, MatrixMN, MatrixN, Scalar, Unit, VectorN};
 
 /// A square matrix.
 pub type SquareMatrix<N, D, S> = Matrix<N, D, D, S>;

src/base/matrix_alga.rs

@@ -7,10 +7,10 @@ use alga::general::{AbstractGroup, AbstractGroupAbelian, AbstractLoop, AbstractM
                     RingCommutative};
 use alga::linear::{FiniteDimInnerSpace, FiniteDimVectorSpace, InnerSpace, NormedSpace, VectorSpace};
 
-use core::{DefaultAllocator, MatrixMN, MatrixN, Scalar};
+use base::{DefaultAllocator, MatrixMN, MatrixN, Scalar};
-use core::dimension::{Dim, DimName};
+use base::dimension::{Dim, DimName};
-use core::storage::{Storage, StorageMut};
+use base::storage::{Storage, StorageMut};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 /*
  *

src/base/matrix_array.rs

@@ -19,11 +19,11 @@ use abomonation::Abomonation;
 use typenum::Prod;
 use generic_array::{ArrayLength, GenericArray};
 
-use core::Scalar;
+use base::Scalar;
-use core::dimension::{DimName, U1};
+use base::dimension::{DimName, U1};
-use core::storage::{ContiguousStorage, ContiguousStorageMut, Owned, Storage, StorageMut};
+use base::storage::{ContiguousStorage, ContiguousStorageMut, Owned, Storage, StorageMut};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::default_allocator::DefaultAllocator;
+use base::default_allocator::DefaultAllocator;
 
 /*
  *

src/base/matrix_slice.rs

@@ -2,12 +2,12 @@ use std::marker::PhantomData;
 use std::ops::{Range, RangeFrom, RangeFull, RangeTo};
 use std::slice;
 
-use core::{Matrix, Scalar};
+use base::{Matrix, Scalar};
-use core::dimension::{Dim, DimName, Dynamic, U1};
+use base::dimension::{Dim, DimName, Dynamic, U1};
-use core::iter::MatrixIter;
+use base::iter::MatrixIter;
-use core::storage::{Owned, Storage, StorageMut};
+use base::storage::{Owned, Storage, StorageMut};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::default_allocator::DefaultAllocator;
+use base::default_allocator::DefaultAllocator;
 
 macro_rules! slice_storage_impl(
     ($doc: expr; $Storage: ident as $SRef: ty; $T: ident.$get_addr: ident ($Ptr: ty as $Ref: ty)) => {

src/base/matrix_vec.rs

@@ -1,10 +1,10 @@
 use std::ops::Deref;
 
-use core::Scalar;
+use base::allocator::Allocator;
-use core::dimension::{Dim, DimName, Dynamic, U1};
+use base::default_allocator::DefaultAllocator;
-use core::storage::{ContiguousStorage, ContiguousStorageMut, Owned, Storage, StorageMut};
+use base::dimension::{Dim, DimName, Dynamic, U1};
-use core::allocator::Allocator;
+use base::storage::{ContiguousStorage, ContiguousStorageMut, Owned, Storage, StorageMut};
-use core::default_allocator::DefaultAllocator;
+use base::Scalar;
 
 #[cfg(feature = "abomonation-serialize")]
 use abomonation::Abomonation;

src/base/mod.rs

@@ -1,45 +1,47 @@
 //! [Reexported at the root of this crate.] Data structures for vector and matrix computations.
 
-pub mod dimension;
-pub mod constraint;
 pub mod allocator;
-pub mod storage;
-pub mod coordinates;
-mod ops;
 mod blas;
-pub mod iter;
+pub mod constraint;
+pub mod coordinates;
 pub mod default_allocator;
+pub mod dimension;
+pub mod iter;
+mod ops;
+pub mod storage;
 
-mod scalar;
+mod alias;
-mod matrix;
+mod alias_slice;
+mod cg;
+mod componentwise;
 mod construction;
 mod construction_slice;
 mod construction_slice_deprecated;
-mod properties;
-mod alias;
-mod alias_slice;
-mod matrix_alga;
 mod conversion;
-mod matrix_slice;
-mod matrix_array;
-mod matrix_vec;
-mod cg;
-mod unit;
-mod componentwise;
 mod edition;
+mod matrix;
+mod matrix_alga;
+mod matrix_array;
+mod matrix_slice;
+#[cfg(any(feature = "std", feature = "alloc"))]
+mod matrix_vec;
+mod properties;
+mod scalar;
+mod unit;
 
 #[doc(hidden)]
 pub mod helper;
 
-pub use self::scalar::*;
 pub use self::matrix::*;
+pub use self::scalar::*;
 pub use self::unit::*;
 
-pub use self::dimension::*;
 pub use self::default_allocator::*;
+pub use self::dimension::*;
 
 pub use self::alias::*;
 pub use self::alias_slice::*;
-pub use self::matrix_slice::*;
 pub use self::matrix_array::*;
+pub use self::matrix_slice::*;
+#[cfg(any(feature = "std", feature = "alloc"))]
 pub use self::matrix_vec::*;

src/base/ops.rs

@@ -6,12 +6,12 @@ use num::{One, Signed, Zero};
 
 use alga::general::{ClosedAdd, ClosedDiv, ClosedMul, ClosedNeg, ClosedSub};
 
-use core::{DefaultAllocator, Matrix, MatrixMN, MatrixN, MatrixSum, Scalar};
+use base::{DefaultAllocator, Matrix, MatrixMN, MatrixN, MatrixSum, Scalar};
-use core::dimension::{Dim, DimMul, DimName, DimProd};
+use base::dimension::{Dim, DimMul, DimName, DimProd};
-use core::constraint::{AreMultipliable, DimEq, SameNumberOfColumns, SameNumberOfRows,
+use base::constraint::{AreMultipliable, DimEq, SameNumberOfColumns, SameNumberOfRows,
                        ShapeConstraint};
-use core::storage::{ContiguousStorageMut, Storage, StorageMut};
+use base::storage::{ContiguousStorageMut, Storage, StorageMut};
-use core::allocator::{Allocator, SameShapeAllocator, SameShapeC, SameShapeR};
+use base::allocator::{Allocator, SameShapeAllocator, SameShapeC, SameShapeR};
 
 /*
  *

src/base/properties.rs

@@ -4,10 +4,10 @@ use num::{One, Zero};
 
 use alga::general::{ClosedAdd, ClosedMul, Real};
 
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{Dim, DimMin};
+use base::dimension::{Dim, DimMin};
-use core::storage::Storage;
+use base::storage::Storage;
-use core::{DefaultAllocator, Matrix, Scalar, SquareMatrix};
+use base::{DefaultAllocator, Matrix, Scalar, SquareMatrix};
 
 impl<N: Scalar, R: Dim, C: Dim, S: Storage<N, R, C>> Matrix<N, R, C, S> {
     /// Indicates if this is a square matrix.

src/base/storage.rs

@@ -3,10 +3,10 @@
 use std::fmt::Debug;
 use std::mem;
 
-use core::Scalar;
+use base::Scalar;
-use core::default_allocator::DefaultAllocator;
+use base::default_allocator::DefaultAllocator;
-use core::dimension::{Dim, U1};
+use base::dimension::{Dim, U1};
-use core::allocator::{Allocator, SameShapeC, SameShapeR};
+use base::allocator::{Allocator, SameShapeC, SameShapeR};
 
 /*
  * Aliases for allocation results.

src/debug/random_orthogonal.rs

@@ -1,14 +1,14 @@
 #[cfg(feature = "arbitrary")]
+use base::storage::Owned;
+#[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
-#[cfg(feature = "arbitrary")]
-use core::storage::Owned;
 
-use num_complex::Complex;
 use alga::general::Real;
-use core::{DefaultAllocator, MatrixN};
+use base::allocator::Allocator;
-use core::dimension::{Dim, Dynamic, U2};
+use base::dimension::{Dim, Dynamic, U2};
-use core::allocator::Allocator;
+use base::{DefaultAllocator, MatrixN};
 use geometry::UnitComplex;
+use num_complex::Complex;
 
 /// A random orthogonal matrix.
 #[derive(Clone, Debug)]

src/debug/random_sdp.rs

@@ -1,12 +1,12 @@
 #[cfg(feature = "arbitrary")]
+use base::storage::Owned;
+#[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
-#[cfg(feature = "arbitrary")]
-use core::storage::Owned;
 
 use alga::general::Real;
-use core::{DefaultAllocator, MatrixN};
+use base::allocator::Allocator;
-use core::dimension::{Dim, Dynamic};
+use base::dimension::{Dim, Dynamic};
-use core::allocator::Allocator;
+use base::{DefaultAllocator, MatrixN};
 
 use debug::RandomOrthogonal;
 

src/geometry/isometry.rs

@@ -12,10 +12,10 @@ use abomonation::Abomonation;
 use alga::general::{Real, SubsetOf};
 use alga::linear::Rotation;
 
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
-use core::storage::Owned;
+use base::storage::Owned;
-use core::{DefaultAllocator, MatrixN};
+use base::{DefaultAllocator, MatrixN};
 use geometry::{Point, Translation};
 
 /// A direct isometry, i.e., a rotation followed by a translation.

src/geometry/isometry_alga.rs

@@ -5,9 +5,9 @@ use alga::linear::Isometry as AlgaIsometry;
 use alga::linear::{AffineTransformation, DirectIsometry, ProjectiveTransformation, Rotation,
                    Similarity, Transformation};
 
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::DimName;
+use base::dimension::DimName;
-use core::{DefaultAllocator, VectorN};
+use base::{DefaultAllocator, VectorN};
 
 use geometry::{Isometry, Point, Translation};
 

src/geometry/isometry_alias.rs

@@ -1,4 +1,4 @@
-use core::dimension::{U2, U3};
+use base::dimension::{U2, U3};
 
 use geometry::{Isometry, Rotation2, Rotation3, UnitComplex, UnitQuaternion};
 

src/geometry/isometry_construction.rs

@@ -1,7 +1,7 @@
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
 #[cfg(feature = "arbitrary")]
-use core::storage::Owned;
+use base::storage::Owned;
 
 use num::One;
 use rand::{Rand, Rng};
@@ -9,9 +9,9 @@ use rand::{Rand, Rng};
 use alga::general::Real;
 use alga::linear::Rotation as AlgaRotation;
 
-use core::{DefaultAllocator, Vector2, Vector3};
+use base::{DefaultAllocator, Vector2, Vector3};
-use core::dimension::{DimName, U2, U3};
+use base::dimension::{DimName, U2, U3};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Isometry, Point, Point3, Rotation, Rotation2, Rotation3, Translation, UnitComplex,
                UnitQuaternion};

src/geometry/isometry_conversion.rs

@@ -1,9 +1,9 @@
 use alga::general::{Real, SubsetOf, SupersetOf};
 use alga::linear::Rotation;
 
-use core::{DefaultAllocator, MatrixN};
+use base::{DefaultAllocator, MatrixN};
-use core::dimension::{DimMin, DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimMin, DimName, DimNameAdd, DimNameSum, U1};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Isometry, Point, Similarity, SuperTCategoryOf, TAffine, Transform, Translation};
 

src/geometry/isometry_ops.rs

@@ -3,9 +3,9 @@ use std::ops::{Div, DivAssign, Mul, MulAssign};
 use alga::general::Real;
 use alga::linear::Rotation as AlgaRotation;
 
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{DimName, U1, U3, U4};
+use base::dimension::{DimName, U1, U3, U4};
-use core::{DefaultAllocator, Unit, VectorN};
+use base::{DefaultAllocator, Unit, VectorN};
 
 use geometry::{Isometry, Point, Rotation, Translation, UnitQuaternion};
 

src/geometry/orthographic.rs

@@ -7,10 +7,10 @@ use std::fmt;
 
 use alga::general::Real;
 
-use core::{Matrix4, Vector, Vector3};
+use base::{Matrix4, Vector, Vector3};
-use core::dimension::U3;
+use base::dimension::U3;
-use core::storage::Storage;
+use base::storage::Storage;
-use core::helper;
+use base::helper;
 
 use geometry::Point3;
 

src/geometry/perspective.rs

@@ -8,10 +8,10 @@ use std::fmt;
 
 use alga::general::Real;
 
-use core::{Matrix4, Scalar, Vector, Vector3};
+use base::{Matrix4, Scalar, Vector, Vector3};
-use core::dimension::U3;
+use base::dimension::U3;
-use core::storage::Storage;
+use base::storage::Storage;
-use core::helper;
+use base::helper;
 
 use geometry::Point3;
 

src/geometry/point.rs

@@ -10,10 +10,10 @@ use serde;
 #[cfg(feature = "abomonation-serialize")]
 use abomonation::Abomonation;
 
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
-use core::iter::{MatrixIter, MatrixIterMut};
+use base::iter::{MatrixIter, MatrixIterMut};
-use core::{DefaultAllocator, Scalar, VectorN};
+use base::{DefaultAllocator, Scalar, VectorN};
 
 /// A point in a n-dimensional euclidean space.
 #[repr(C)]

src/geometry/point_alga.rs

@@ -1,9 +1,9 @@
 use alga::general::{Field, JoinSemilattice, Lattice, MeetSemilattice, Real};
 use alga::linear::{AffineSpace, EuclideanSpace};
 
-use core::{DefaultAllocator, Scalar, VectorN};
+use base::{DefaultAllocator, Scalar, VectorN};
-use core::dimension::DimName;
+use base::dimension::DimName;
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::Point;
 

src/geometry/point_alias.rs

@@ -1,4 +1,4 @@
-use core::dimension::{U1, U2, U3, U4, U5, U6};
+use base::dimension::{U1, U2, U3, U4, U5, U6};
 
 use geometry::Point;
 

src/geometry/point_construction.rs

@@ -5,9 +5,9 @@ use rand::{Rand, Rng};
 use num::{Bounded, One, Zero};
 
 use alga::general::ClosedDiv;
-use core::{DefaultAllocator, Scalar, VectorN};
+use base::{DefaultAllocator, Scalar, VectorN};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1, U2, U3, U4, U5, U6};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1, U2, U3, U4, U5, U6};
 
 use geometry::Point;
 

src/geometry/point_conversion.rs

@@ -1,9 +1,9 @@
 use num::{One, Zero};
 use alga::general::{ClosedDiv, SubsetOf, SupersetOf};
 
-use core::{DefaultAllocator, Matrix, Scalar, VectorN};
+use base::{DefaultAllocator, Matrix, Scalar, VectorN};
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::Point;
 

src/geometry/point_coordinates.rs

@@ -1,10 +1,10 @@
 use std::mem;
 use std::ops::{Deref, DerefMut};
 
-use core::{DefaultAllocator, Scalar};
+use base::allocator::Allocator;
-use core::dimension::{U1, U2, U3, U4, U5, U6};
+use base::coordinates::{X, XY, XYZ, XYZW, XYZWA, XYZWAB};
-use core::coordinates::{X, XY, XYZ, XYZW, XYZWA, XYZWAB};
+use base::dimension::{U1, U2, U3, U4, U5, U6};
-use core::allocator::Allocator;
+use base::{DefaultAllocator, Scalar};
 
 use geometry::Point;
 

src/geometry/point_ops.rs

@@ -1,14 +1,15 @@
-use std::ops::{Add, AddAssign, Div, DivAssign, Index, IndexMut, Mul, MulAssign, Neg, Sub,
-               SubAssign};
 use num::{One, Zero};
+use std::ops::{
+    Add, AddAssign, Div, DivAssign, Index, IndexMut, Mul, MulAssign, Neg, Sub, SubAssign,
+};
 
 use alga::general::{ClosedAdd, ClosedDiv, ClosedMul, ClosedNeg, ClosedSub};
 
-use core::{DefaultAllocator, Matrix, Scalar, Vector, VectorSum};
+use base::allocator::{Allocator, SameShapeAllocator};
-use core::dimension::{Dim, DimName, U1};
+use base::constraint::{AreMultipliable, SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
-use core::constraint::{AreMultipliable, SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
+use base::dimension::{Dim, DimName, U1};
-use core::storage::Storage;
+use base::storage::Storage;
-use core::allocator::{Allocator, SameShapeAllocator};
+use base::{DefaultAllocator, Matrix, Scalar, Vector, VectorSum};
 
 use geometry::Point;
 

src/geometry/quaternion.rs

@@ -4,7 +4,7 @@ use std::fmt;
 use std::hash;
 
 #[cfg(feature = "serde-serialize")]
-use core::storage::Owned;
+use base::storage::Owned;
 #[cfg(feature = "serde-serialize")]
 use serde;
 
@@ -13,9 +13,9 @@ use abomonation::Abomonation;
 
 use alga::general::Real;
 
-use core::dimension::{U1, U3, U4};
+use base::dimension::{U1, U3, U4};
-use core::storage::{CStride, RStride};
+use base::storage::{CStride, RStride};
-use core::{Matrix3, MatrixN, MatrixSlice, MatrixSliceMut, Unit, Vector3, Vector4};
+use base::{Matrix3, MatrixN, MatrixSlice, MatrixSliceMut, Unit, Vector3, Vector4};
 
 use geometry::Rotation;
 

src/geometry/quaternion_alga.rs

@@ -7,7 +7,7 @@ use alga::linear::{AffineTransformation, DirectIsometry, FiniteDimVectorSpace, I
                    NormedSpace, OrthogonalTransformation, ProjectiveTransformation, Rotation,
                    Similarity, Transformation, VectorSpace};
 
-use core::{Vector3, Vector4};
+use base::{Vector3, Vector4};
 use geometry::{Point3, Quaternion, UnitQuaternion};
 
 impl<N: Real> Identity<Multiplicative> for Quaternion<N> {

src/geometry/quaternion_construction.rs

@@ -1,18 +1,18 @@
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
 #[cfg(feature = "arbitrary")]
-use core::storage::Owned;
+use base::storage::Owned;
 #[cfg(feature = "arbitrary")]
-use core::dimension::U4;
+use base::dimension::U4;
 
 use rand::{Rand, Rng};
 use num::{One, Zero};
 
 use alga::general::Real;
 
-use core::{Unit, Vector, Vector3, Vector4};
+use base::{Unit, Vector, Vector3, Vector4};
-use core::storage::Storage;
+use base::storage::Storage;
-use core::dimension::U3;
+use base::dimension::U3;
 
 use geometry::{Quaternion, Rotation, UnitQuaternion};
 

src/geometry/quaternion_conversion.rs

@@ -6,8 +6,8 @@ use alga::linear::Rotation as AlgaRotation;
 #[cfg(feature = "mint")]
 use mint;
 
-use core::{Matrix4, Vector4};
+use base::{Matrix4, Vector4};
-use core::dimension::U3;
+use base::dimension::U3;
 use geometry::{Isometry, Point3, Quaternion, Rotation, Rotation3, Similarity, SuperTCategoryOf,
                TAffine, Transform, Translation, UnitQuaternion};
 

src/geometry/quaternion_coordinates.rs

@@ -3,7 +3,7 @@ use std::ops::{Deref, DerefMut};
 
 use alga::general::Real;
 
-use core::coordinates::IJKW;
+use base::coordinates::IJKW;
 
 use geometry::Quaternion;
 

src/geometry/quaternion_ops.rs

@@ -55,10 +55,10 @@ use std::ops::{Add, AddAssign, Div, DivAssign, Index, IndexMut, Mul, MulAssign,
 
 use alga::general::Real;
 
-use core::{DefaultAllocator, Unit, Vector, Vector3};
+use base::{DefaultAllocator, Unit, Vector, Vector3};
-use core::storage::Storage;
+use base::storage::Storage;
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{U1, U3, U4};
+use base::dimension::{U1, U3, U4};
 
 use geometry::{Point3, Quaternion, Rotation, UnitQuaternion};
 

src/geometry/reflection.rs

@@ -1,7 +1,7 @@
 use alga::general::Real;
-use core::{DefaultAllocator, Matrix, Scalar, Unit, Vector};
+use base::allocator::Allocator;
-use core::constraint::{AreMultipliable, DimEq, SameNumberOfRows, ShapeConstraint};
+use base::constraint::{AreMultipliable, DimEq, SameNumberOfRows, ShapeConstraint};
-use core::allocator::Allocator;
+use base::{DefaultAllocator, Matrix, Scalar, Unit, Vector};
 use dimension::{Dim, DimName, U1};
 use storage::{Storage, StorageMut};
 

src/geometry/rotation.rs

@@ -7,16 +7,16 @@ use std::hash;
 use serde;
 
 #[cfg(feature = "serde-serialize")]
-use core::storage::Owned;
+use base::storage::Owned;
 
 #[cfg(feature = "abomonation-serialize")]
 use abomonation::Abomonation;
 
 use alga::general::Real;
 
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
-use core::{DefaultAllocator, MatrixN, Scalar};
+use base::{DefaultAllocator, MatrixN, Scalar};
 
 /// A rotation matrix.
 #[repr(C)]

src/geometry/rotation_alga.rs

@@ -4,9 +4,9 @@ use alga::general::{AbstractGroup, AbstractLoop, AbstractMagma, AbstractMonoid,
 use alga::linear::{self, AffineTransformation, DirectIsometry, Isometry, OrthogonalTransformation,
                    ProjectiveTransformation, Similarity, Transformation};
 
-use core::{DefaultAllocator, VectorN};
+use base::{DefaultAllocator, VectorN};
-use core::dimension::DimName;
+use base::dimension::DimName;
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Point, Rotation};
 

src/geometry/rotation_alias.rs

@@ -1,4 +1,4 @@
-use core::dimension::{U2, U3};
+use base::dimension::{U2, U3};
 
 use geometry::Rotation;
 

src/geometry/rotation_construction.rs

@@ -2,9 +2,9 @@ use num::{One, Zero};
 
 use alga::general::{ClosedAdd, ClosedMul};
 
-use core::{DefaultAllocator, MatrixN, Scalar};
+use base::{DefaultAllocator, MatrixN, Scalar};
-use core::dimension::DimName;
+use base::dimension::DimName;
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::Rotation;
 

src/geometry/rotation_conversion.rs

@@ -6,9 +6,9 @@ use alga::linear::Rotation as AlgaRotation;
 #[cfg(feature = "mint")]
 use mint;
 
-use core::{DefaultAllocator, MatrixN};
+use base::{DefaultAllocator, MatrixN};
-use core::dimension::{DimMin, DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimMin, DimName, DimNameAdd, DimNameSum, U1};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Isometry, Point, Rotation, Rotation2, Rotation3, Similarity, SuperTCategoryOf,
                TAffine, Transform, Translation, UnitComplex, UnitQuaternion};

src/geometry/rotation_ops.rs

@@ -21,11 +21,11 @@ use num::{One, Zero};
 
 use alga::general::{ClosedAdd, ClosedMul};
 
-use core::{DefaultAllocator, Matrix, MatrixMN, Scalar};
+use base::{DefaultAllocator, Matrix, MatrixMN, Scalar};
-use core::dimension::{Dim, DimName, U1};
+use base::dimension::{Dim, DimName, U1};
-use core::constraint::{AreMultipliable, ShapeConstraint};
+use base::constraint::{AreMultipliable, ShapeConstraint};
-use core::storage::Storage;
+use base::storage::Storage;
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Point, Rotation};
 

src/geometry/rotation_specialization.rs

@@ -1,16 +1,16 @@
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
 #[cfg(feature = "arbitrary")]
-use core::storage::Owned;
+use base::storage::Owned;
 
 use std::ops::Neg;
 use num::Zero;
 use rand::{Rand, Rng};
 use alga::general::Real;
 
-use core::{MatrixN, Unit, Vector, Vector1, Vector3, VectorN};
+use base::{MatrixN, Unit, Vector, Vector1, Vector3, VectorN};
-use core::dimension::{U1, U2, U3};
+use base::dimension::{U1, U2, U3};
-use core::storage::Storage;
+use base::storage::Storage;
 
 use geometry::{Rotation2, Rotation3, UnitComplex};
 

src/geometry/similarity.rs

@@ -11,10 +11,10 @@ use abomonation::Abomonation;
 use alga::general::{Real, SubsetOf};
 use alga::linear::Rotation;
 
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
-use core::storage::Owned;
+use base::storage::Owned;
-use core::{DefaultAllocator, MatrixN};
+use base::{DefaultAllocator, MatrixN};
 use geometry::{Isometry, Point, Translation};
 
 /// A similarity, i.e., an uniform scaling, followed by a rotation, followed by a translation.

src/geometry/similarity_alga.rs

@@ -3,9 +3,9 @@ use alga::general::{AbstractGroup, AbstractLoop, AbstractMagma, AbstractMonoid,
 use alga::linear::{AffineTransformation, ProjectiveTransformation, Rotation, Transformation};
 use alga::linear::Similarity as AlgaSimilarity;
 
-use core::{DefaultAllocator, VectorN};
+use base::{DefaultAllocator, VectorN};
-use core::dimension::DimName;
+use base::dimension::DimName;
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Point, Similarity, Translation};
 

src/geometry/similarity_alias.rs

@@ -1,4 +1,4 @@
-use core::dimension::{U2, U3};
+use base::dimension::{U2, U3};
 
 use geometry::{Rotation2, Rotation3, Similarity, UnitComplex, UnitQuaternion};
 

src/geometry/similarity_construction.rs

@@ -1,7 +1,7 @@
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
 #[cfg(feature = "arbitrary")]
-use core::storage::Owned;
+use base::storage::Owned;
 
 use num::One;
 use rand::{Rand, Rng};
@@ -9,9 +9,9 @@ use rand::{Rand, Rng};
 use alga::general::Real;
 use alga::linear::Rotation as AlgaRotation;
 
-use core::{DefaultAllocator, Vector2, Vector3};
+use base::{DefaultAllocator, Vector2, Vector3};
-use core::dimension::{DimName, U2, U3};
+use base::dimension::{DimName, U2, U3};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Isometry, Point, Point3, Rotation2, Rotation3, Similarity, Translation,
                UnitComplex, UnitQuaternion};

src/geometry/similarity_conversion.rs

@@ -1,9 +1,9 @@
 use alga::general::{Real, SubsetOf, SupersetOf};
 use alga::linear::Rotation;
 
-use core::{DefaultAllocator, MatrixN};
+use base::{DefaultAllocator, MatrixN};
-use core::dimension::{DimMin, DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimMin, DimName, DimNameAdd, DimNameSum, U1};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Isometry, Point, Similarity, SuperTCategoryOf, TAffine, Transform, Translation};
 

src/geometry/similarity_ops.rs

@@ -3,9 +3,9 @@ use std::ops::{Div, DivAssign, Mul, MulAssign};
 use alga::general::Real;
 use alga::linear::Rotation as AlgaRotation;
 
-use core::{DefaultAllocator, VectorN};
+use base::{DefaultAllocator, VectorN};
-use core::dimension::{DimName, U1, U3, U4};
+use base::dimension::{DimName, U1, U3, U4};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Isometry, Point, Rotation, Similarity, Translation, UnitQuaternion};
 

src/geometry/transform.rs

@@ -7,10 +7,10 @@ use serde;
 
 use alga::general::Real;
 
-use core::{DefaultAllocator, MatrixN};
+use base::{DefaultAllocator, MatrixN};
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
-use core::storage::Owned;
+use base::storage::Owned;
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 /// Trait implemented by phantom types identifying the projective transformation type.
 ///
@@ -350,7 +350,7 @@ where
 #[cfg(test)]
 mod tests {
     use super::*;
-    use core::Matrix4;
+    use base::Matrix4;
 
     #[test]
     fn checks_homogeneous_invariants_of_square_identity_matrix() {

src/geometry/transform_alga.rs

@@ -2,9 +2,9 @@ use alga::general::{AbstractGroup, AbstractLoop, AbstractMagma, AbstractMonoid,
                     AbstractQuasigroup, AbstractSemigroup, Identity, Inverse, Multiplicative, Real};
 use alga::linear::{ProjectiveTransformation, Transformation};
 
-use core::{DefaultAllocator, VectorN};
+use base::{DefaultAllocator, VectorN};
-use core::dimension::{DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimNameAdd, DimNameSum, U1};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Point, SubTCategoryOf, TCategory, TProjective, Transform};
 

src/geometry/transform_alias.rs

@@ -1,4 +1,4 @@
-use core::dimension::{U2, U3};
+use base::dimension::{U2, U3};
 
 use geometry::{TAffine, TGeneral, TProjective, Transform};
 

src/geometry/transform_construction.rs

@@ -2,9 +2,9 @@ use num::One;
 
 use alga::general::Real;
 
-use core::{DefaultAllocator, MatrixN};
+use base::{DefaultAllocator, MatrixN};
-use core::dimension::{DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimNameAdd, DimNameSum, U1};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{TCategory, Transform};
 

src/geometry/transform_conversion.rs

@@ -1,8 +1,8 @@
 use alga::general::{Real, SubsetOf};
 
-use core::{DefaultAllocator, MatrixN};
+use base::{DefaultAllocator, MatrixN};
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{SuperTCategoryOf, TCategory, Transform};
 

src/geometry/transform_ops.rs

@@ -3,9 +3,9 @@ use std::ops::{Div, DivAssign, Index, IndexMut, Mul, MulAssign};
 
 use alga::general::{ClosedAdd, ClosedMul, Real, SubsetOf};
 
-use core::{DefaultAllocator, MatrixN, Scalar, VectorN};
+use base::{DefaultAllocator, MatrixN, Scalar, VectorN};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1, U3, U4};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1, U3, U4};
 
 use geometry::{Isometry, Point, Rotation, Similarity, SubTCategoryOf, SuperTCategoryOf, TAffine,
                TCategory, TCategoryMul, TGeneral, TProjective, Transform, Translation,

src/geometry/translation.rs

@@ -11,10 +11,10 @@ use abomonation::Abomonation;
 
 use alga::general::{ClosedNeg, Real};
 
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
-use core::storage::Owned;
+use base::storage::Owned;
-use core::{DefaultAllocator, MatrixN, Scalar, VectorN};
+use base::{DefaultAllocator, MatrixN, Scalar, VectorN};
 
 /// A translation.
 #[repr(C)]

src/geometry/translation_alga.rs

@@ -5,9 +5,9 @@ use alga::linear::{AffineTransformation, DirectIsometry, Isometry, ProjectiveTra
                    Similarity, Transformation};
 use alga::linear::Translation as AlgaTranslation;
 
-use core::{DefaultAllocator, VectorN};
+use base::{DefaultAllocator, VectorN};
-use core::dimension::DimName;
+use base::dimension::DimName;
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Point, Translation};
 

src/geometry/translation_alias.rs

@@ -1,4 +1,4 @@
-use core::dimension::{U2, U3};
+use base::dimension::{U2, U3};
 
 use geometry::Translation;
 

src/geometry/translation_construction.rs

@@ -1,16 +1,16 @@
 #[cfg(feature = "arbitrary")]
 use quickcheck::{Arbitrary, Gen};
 #[cfg(feature = "arbitrary")]
-use core::storage::Owned;
+use base::storage::Owned;
 
 use num::{One, Zero};
 use rand::{Rand, Rng};
 
 use alga::general::ClosedAdd;
 
-use core::{DefaultAllocator, Scalar, VectorN};
+use base::{DefaultAllocator, Scalar, VectorN};
-use core::dimension::{DimName, U1, U2, U3, U4, U5, U6};
+use base::dimension::{DimName, U1, U2, U3, U4, U5, U6};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::Translation;
 

src/geometry/translation_conversion.rs

@@ -1,9 +1,9 @@
 use alga::general::{Real, SubsetOf, SupersetOf};
 use alga::linear::Rotation;
 
-use core::{DefaultAllocator, MatrixN, Scalar, VectorN};
+use base::{DefaultAllocator, MatrixN, Scalar, VectorN};
-use core::dimension::{DimName, DimNameAdd, DimNameSum, U1};
+use base::dimension::{DimName, DimNameAdd, DimNameSum, U1};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use geometry::{Isometry, Point, Similarity, SuperTCategoryOf, TAffine, Transform, Translation};
 

src/geometry/translation_ops.rs

@@ -2,10 +2,10 @@ use std::ops::{Div, DivAssign, Mul, MulAssign};
 
 use alga::general::{ClosedAdd, ClosedSub};
 
-use core::{DefaultAllocator, Scalar};
+use base::{DefaultAllocator, Scalar};
-use core::dimension::{DimName, U1};
+use base::dimension::{DimName, U1};
-use core::constraint::{SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
+use base::constraint::{SameNumberOfColumns, SameNumberOfRows, ShapeConstraint};
-use core::allocator::{Allocator, SameShapeAllocator};
+use base::allocator::{Allocator, SameShapeAllocator};
 
 use geometry::{Point, Translation};
 

src/geometry/unit_complex.rs

@@ -3,7 +3,7 @@ use num_complex::Complex;
 use std::fmt;
 
 use alga::general::Real;
-use core::{Matrix2, Matrix3, Unit, Vector1};
+use base::{Matrix2, Matrix3, Unit, Vector1};
 use geometry::Rotation2;
 
 /// A complex number with a norm equal to 1.

src/geometry/unit_complex_alga.rs

@@ -4,9 +4,9 @@ use alga::general::{AbstractGroup, AbstractLoop, AbstractMagma, AbstractMonoid,
 use alga::linear::{AffineTransformation, DirectIsometry, Isometry, OrthogonalTransformation,
                    ProjectiveTransformation, Rotation, Similarity, Transformation};
 
-use core::{DefaultAllocator, Vector2};
+use base::{DefaultAllocator, Vector2};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::dimension::U2;
+use base::dimension::U2;
 use geometry::{Point2, UnitComplex};
 
 /*

src/geometry/unit_complex_construction.rs

@@ -6,10 +6,10 @@ use num_complex::Complex;
 use rand::{Rand, Rng};
 
 use alga::general::Real;
-use core::{DefaultAllocator, Unit, Vector};
+use base::allocator::Allocator;
-use core::dimension::{U1, U2};
+use base::dimension::{U1, U2};
-use core::storage::Storage;
+use base::storage::Storage;
-use core::allocator::Allocator;
+use base::{DefaultAllocator, Unit, Vector};
 use geometry::{Rotation, UnitComplex};
 
 impl<N: Real> UnitComplex<N> {

src/geometry/unit_complex_conversion.rs

@@ -4,10 +4,12 @@ use num_complex::Complex;
 use alga::general::{Real, SubsetOf, SupersetOf};
 use alga::linear::Rotation as AlgaRotation;
 
-use core::Matrix3;
+use base::dimension::U2;
-use core::dimension::U2;
+use base::Matrix3;
-use geometry::{Isometry, Point2, Rotation2, Similarity, SuperTCategoryOf, TAffine, Transform,
+use geometry::{
-               Translation, UnitComplex};
+    Isometry, Point2, Rotation2, Similarity, SuperTCategoryOf, TAffine, Transform, Translation,
+    UnitComplex,
+};
 
 /*
  * This file provides the following conversions:

src/geometry/unit_complex_ops.rs

@@ -1,11 +1,11 @@
 use std::ops::{Div, DivAssign, Mul, MulAssign};
 
 use alga::general::Real;
-use core::allocator::Allocator;
+use base::allocator::Allocator;
-use core::constraint::{DimEq, ShapeConstraint};
+use base::constraint::{DimEq, ShapeConstraint};
-use core::dimension::{Dim, U1, U2};
+use base::dimension::{Dim, U1, U2};
-use core::storage::{Storage, StorageMut};
+use base::storage::{Storage, StorageMut};
-use core::{DefaultAllocator, Matrix, Unit, Vector, Vector2};
+use base::{DefaultAllocator, Matrix, Unit, Vector, Vector2};
 use geometry::{Isometry, Point2, Rotation, Similarity, Translation, UnitComplex};
 
 /*

src/lib.rs

@@ -84,6 +84,7 @@ an optimized set of tools for computer graphics and physics. Those features incl
 #![deny(missing_docs)]
 #![warn(incoherent_fundamental_impls)]
 #![doc(html_root_url = "http://nalgebra.org/rustdoc")]
+#![cfg_attr(not(feature = "std"), no_std)]
 
 #[cfg(feature = "arbitrary")]
 extern crate quickcheck;
@@ -103,6 +104,7 @@ extern crate mint;
 #[macro_use]
 extern crate approx;
 extern crate generic_array;
+#[cfg(feature = "std")]
 extern crate matrixmultiply;
 extern crate num_complex;
 extern crate num_traits as num;
@@ -111,20 +113,30 @@ extern crate typenum;
 
 extern crate alga;
 
-pub mod core;
+#[cfg(not(feature = "std"))]
+extern crate core as std;
+
+pub mod base;
 #[cfg(feature = "debug")]
 pub mod debug;
 pub mod geometry;
 pub mod linalg;
 
-pub use core::*;
+#[cfg(feature = "std")]
+#[deprecated(
+    note = "The 'core' module is being renamed 'based' to avoid conflicts with the 'core' crate."
+)]
+pub use base as core;
+pub use base::*;
 pub use geometry::*;
 pub use linalg::*;
 
 use std::cmp::{self, Ordering, PartialOrd};
 
-use alga::general::{Additive, AdditiveGroup, Identity, Inverse, JoinSemilattice, Lattice,
+use alga::general::{
-                    MeetSemilattice, Multiplicative, SupersetOf};
+    Additive, AdditiveGroup, Identity, Inverse, JoinSemilattice, Lattice, MeetSemilattice,
+    Multiplicative, SupersetOf,
+};
 use alga::linear::SquareMatrix as AlgaSquareMatrix;
 use alga::linear::{EuclideanSpace, FiniteDimVectorSpace, InnerSpace, NormedSpace};
 use num::Signed;

src/linalg/balancing.rs

@@ -1,12 +1,12 @@
 //! Functions for balancing a matrix.
 
-use std::ops::{DivAssign, MulAssign};
 use alga::general::Real;
+use std::ops::{DivAssign, MulAssign};
 
-use core::{DefaultAllocator, MatrixN, VectorN};
-use core::dimension::{Dim, U1};
-use core::storage::Storage;
 use allocator::Allocator;
+use base::dimension::{Dim, U1};
+use base::storage::Storage;
+use base::{DefaultAllocator, MatrixN, VectorN};
 
 /// Applies in-place a modified Parlett and Reinsch matrix balancing with 2-norm to the matrix `m` and returns
 /// the corresponding diagonal transformation.

src/linalg/bidiagonal.rs

@@ -2,33 +2,45 @@
 use serde;
 
 use alga::general::Real;
-use core::{DefaultAllocator, Matrix, MatrixMN, MatrixN, Unit, VectorN};
+use allocator::Allocator;
+use base::{DefaultAllocator, Matrix, MatrixMN, MatrixN, Unit, VectorN};
+use constraint::{DimEq, ShapeConstraint};
 use dimension::{Dim, DimDiff, DimMin, DimMinimum, DimSub, Dynamic, U1};
 use storage::Storage;
-use allocator::Allocator;
-use constraint::{DimEq, ShapeConstraint};
 
-use linalg::householder;
 use geometry::Reflection;
+use linalg::householder;
 
 /// The bidiagonalization of a general matrix.
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "serde-serialize",
+#[cfg_attr(
-           serde(bound(serialize = "DimMinimum<R, C>: DimSub<U1>,
+    feature = "serde-serialize",
+    serde(
+        bound(
+            serialize = "DimMinimum<R, C>: DimSub<U1>,
          DefaultAllocator: Allocator<N, R, C>             +
                            Allocator<N, DimMinimum<R, C>> +
                            Allocator<N, DimDiff<DimMinimum<R, C>, U1>>,
          MatrixMN<N, R, C>: serde::Serialize,
          VectorN<N, DimMinimum<R, C>>: serde::Serialize,
-         VectorN<N, DimDiff<DimMinimum<R, C>, U1>>: serde::Serialize")))]
+         VectorN<N, DimDiff<DimMinimum<R, C>, U1>>: serde::Serialize"
-#[cfg_attr(feature = "serde-serialize",
+        )
-           serde(bound(deserialize = "DimMinimum<R, C>: DimSub<U1>,
+    )
+)]
+#[cfg_attr(
+    feature = "serde-serialize",
+    serde(
+        bound(
+            deserialize = "DimMinimum<R, C>: DimSub<U1>,
          DefaultAllocator: Allocator<N, R, C>             +
                            Allocator<N, DimMinimum<R, C>> +
                            Allocator<N, DimDiff<DimMinimum<R, C>, U1>>,
          MatrixMN<N, R, C>: serde::Deserialize<'de>,
          VectorN<N, DimMinimum<R, C>>: serde::Deserialize<'de>,
-         VectorN<N, DimDiff<DimMinimum<R, C>, U1>>: serde::Deserialize<'de>")))]
+         VectorN<N, DimDiff<DimMinimum<R, C>, U1>>: serde::Deserialize<'de>"
+        )
+    )
+)]
 #[derive(Clone, Debug)]
 pub struct Bidiagonal<N: Real, R: DimMin<C>, C: Dim>
 where

src/linalg/cholesky.rs

@@ -3,20 +3,32 @@ use serde;
 
 use alga::general::Real;
 
-use core::{DefaultAllocator, Matrix, MatrixMN, MatrixN, SquareMatrix};
-use constraint::{SameNumberOfRows, ShapeConstraint};
-use storage::{Storage, StorageMut};
 use allocator::Allocator;
+use base::{DefaultAllocator, Matrix, MatrixMN, MatrixN, SquareMatrix};
+use constraint::{SameNumberOfRows, ShapeConstraint};
 use dimension::{Dim, DimSub, Dynamic};
+use storage::{Storage, StorageMut};
 
 /// The Cholesky decomposion of a symmetric-definite-positive matrix.
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "serde-serialize",
+#[cfg_attr(
-           serde(bound(serialize = "DefaultAllocator: Allocator<N, D>,
+    feature = "serde-serialize",
-         MatrixN<N, D>: serde::Serialize")))]
+    serde(
-#[cfg_attr(feature = "serde-serialize",
+        bound(
-           serde(bound(deserialize = "DefaultAllocator: Allocator<N, D>,
+            serialize = "DefaultAllocator: Allocator<N, D>,
-         MatrixN<N, D>: serde::Deserialize<'de>")))]
+         MatrixN<N, D>: serde::Serialize"
+        )
+    )
+)]
+#[cfg_attr(
+    feature = "serde-serialize",
+    serde(
+        bound(
+            deserialize = "DefaultAllocator: Allocator<N, D>,
+         MatrixN<N, D>: serde::Deserialize<'de>"
+        )
+    )
+)]
 #[derive(Clone, Debug)]
 pub struct Cholesky<N: Real, D: Dim>
 where

src/linalg/determinant.rs

@@ -1,9 +1,9 @@
 use alga::general::Real;
 
-use core::{DefaultAllocator, SquareMatrix};
+use base::allocator::Allocator;
-use core::dimension::DimMin;
+use base::dimension::DimMin;
-use core::storage::Storage;
+use base::storage::Storage;
-use core::allocator::Allocator;
+use base::{DefaultAllocator, SquareMatrix};
 
 use linalg::LU;
 

src/linalg/eigen.rs

@@ -1,64 +1,79 @@
 #[cfg(feature = "serde-serialize")]
 use serde;
 
-use std::fmt::Display;
-use std::cmp;
-use num_complex::Complex;
 use alga::general::Real;
+use num_complex::Complex;
+use std::cmp;
+use std::fmt::Display;
 use std::ops::MulAssign;
 
-use core::{DefaultAllocator, SquareMatrix, VectorN, MatrixN, Hessenberg, Unit, Vector2, Vector3};
-use core::dimension::{Dim, DimSub, DimDiff, Dynamic, U1, U2, U3};
-use core::storage::Storage;
-use constraint::{ShapeConstraint, DimEq};
 use allocator::Allocator;
+use base::dimension::{Dim, DimDiff, DimSub, Dynamic, U1, U2, U3};
+use base::storage::Storage;
+use base::{DefaultAllocator, Hessenberg, MatrixN, SquareMatrix, Unit, Vector2, Vector3, VectorN};
+use constraint::{DimEq, ShapeConstraint};
 
+use geometry::{Reflection, UnitComplex};
 use linalg::householder;
 use linalg::RealSchur;
-use geometry::{Reflection, UnitComplex};
-
 
 /// Eigendecomposition of a matrix with real eigenvalues.
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "serde-serialize",
+#[cfg_attr(
-    serde(bound(serialize =
+    feature = "serde-serialize",
-        "DefaultAllocator: Allocator<N, D>,
+    serde(
+        bound(
+            serialize = "DefaultAllocator: Allocator<N, D>,
          VectorN<N, D>: serde::Serialize,
-         MatrixN<N, D>: serde::Serialize")))]
+         MatrixN<N, D>: serde::Serialize"
-#[cfg_attr(feature = "serde-serialize",
+        )
-    serde(bound(deserialize =
+    )
-        "DefaultAllocator: Allocator<N, D>,
+)]
+#[cfg_attr(
+    feature = "serde-serialize",
+    serde(
+        bound(
+            deserialize = "DefaultAllocator: Allocator<N, D>,
          VectorN<N, D>: serde::Serialize,
-         MatrixN<N, D>: serde::Deserialize<'de>")))]
+         MatrixN<N, D>: serde::Deserialize<'de>"
+        )
+    )
+)]
 #[derive(Clone, Debug)]
 pub struct RealEigen<N: Real, D: Dim>
-    where DefaultAllocator: Allocator<N, D, D> + 
+where
-                            Allocator<N, D> {
+    DefaultAllocator: Allocator<N, D, D> + Allocator<N, D>,
+{
     pub eigenvectors: MatrixN<N, D>,
-    pub eigenvalues:  VectorN<N, D>
+    pub eigenvalues: VectorN<N, D>,
 }
 
-
 impl<N: Real, D: Dim> Copy for RealEigen<N, D>
-    where DefaultAllocator: Allocator<N, D, D> + 
+where
-                            Allocator<N, D>,
+    DefaultAllocator: Allocator<N, D, D> + Allocator<N, D>,
     MatrixN<N, D>: Copy,
-          VectorN<N, D>: Copy { }
+    VectorN<N, D>: Copy,
+{
+}
 
 impl<N: Real, D: Dim> RealEigen<N, D>
-    where D: DimSub<U1>,                        // For Hessenberg.
+where
+    D: DimSub<U1>,                                   // For Hessenberg.
     ShapeConstraint: DimEq<Dynamic, DimDiff<D, U1>>, // For Hessenberg.
-          DefaultAllocator: Allocator<N, D, DimDiff<D, U1>> + // For Hessenberg.
+    DefaultAllocator: Allocator<N, D, DimDiff<D, U1>>
-                            Allocator<N, DimDiff<D, U1>>    + // For Hessenberg.
+        + Allocator<N, DimDiff<D, U1>>
-                            Allocator<N, D, D>              + 
+        + Allocator<N, D, D>
-                            Allocator<N, D>,
+        + Allocator<N, D>,
     // XXX: for debug
     DefaultAllocator: Allocator<usize, D, D>,
-          MatrixN<N, D>: Display {
+    MatrixN<N, D>: Display,
-
+{
     /// Computes the eigendecomposition of a diagonalizable matrix with real eigenvalues.
     pub fn new(m: MatrixN<N, D>) -> Option<RealEigen<N, D>> {
-        assert!(m.is_square(), "Unable to compute the eigendecomposition of a non-square matrix.");
+        assert!(
+            m.is_square(),
+            "Unable to compute the eigendecomposition of a non-square matrix."
+        );
 
         let dim = m.nrows();
         let (mut eigenvectors, mut eigenvalues) = RealSchur::new(m, 0).unwrap().unpack();
@@ -99,7 +114,7 @@ impl<N: Real, D: Dim> RealEigen<N, D>
 
         Some(RealEigen {
             eigenvectors: eigenvectors,
-            eigenvalues:  eigenvalues.diagonal()
+            eigenvalues: eigenvalues.diagonal(),
         })
     }
 }

src/linalg/full_piv_lu.rs

@@ -2,27 +2,39 @@
 use serde;
 
 use alga::general::Real;
-use core::{DefaultAllocator, Matrix, MatrixMN, MatrixN};
+use allocator::Allocator;
+use base::{DefaultAllocator, Matrix, MatrixMN, MatrixN};
+use constraint::{SameNumberOfRows, ShapeConstraint};
 use dimension::{Dim, DimMin, DimMinimum};
 use storage::{Storage, StorageMut};
-use allocator::Allocator;
-use constraint::{SameNumberOfRows, ShapeConstraint};
 
 use linalg::lu;
 use linalg::PermutationSequence;
 
 /// LU decomposition with full row and column pivoting.
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "serde-serialize",
+#[cfg_attr(
-           serde(bound(serialize = "DefaultAllocator: Allocator<N, R, C> +
+    feature = "serde-serialize",
+    serde(
+        bound(
+            serialize = "DefaultAllocator: Allocator<N, R, C> +
                            Allocator<(usize, usize), DimMinimum<R, C>>,
          MatrixMN<N, R, C>: serde::Serialize,
-         PermutationSequence<DimMinimum<R, C>>: serde::Serialize")))]
+         PermutationSequence<DimMinimum<R, C>>: serde::Serialize"
-#[cfg_attr(feature = "serde-serialize",
+        )
-           serde(bound(deserialize = "DefaultAllocator: Allocator<N, R, C> +
+    )
+)]
+#[cfg_attr(
+    feature = "serde-serialize",
+    serde(
+        bound(
+            deserialize = "DefaultAllocator: Allocator<N, R, C> +
                            Allocator<(usize, usize), DimMinimum<R, C>>,
          MatrixMN<N, R, C>: serde::Deserialize<'de>,
-         PermutationSequence<DimMinimum<R, C>>: serde::Deserialize<'de>")))]
+         PermutationSequence<DimMinimum<R, C>>: serde::Deserialize<'de>"
+        )
+    )
+)]
 #[derive(Clone, Debug)]
 pub struct FullPivLU<N: Real, R: DimMin<C>, C: Dim>
 where

src/linalg/givens.rs

@@ -3,9 +3,9 @@
 use alga::general::Real;
 use num_complex::Complex;
 
-use core::Vector;
+use base::dimension::U2;
-use core::storage::Storage;
+use base::storage::Storage;
-use core::dimension::U2;
+use base::Vector;
 
 use geometry::UnitComplex;
 

src/linalg/hessenberg.rs

@@ -2,26 +2,38 @@
 use serde;
 
 use alga::general::Real;
-use core::{DefaultAllocator, MatrixMN, MatrixN, SquareMatrix, VectorN};
+use allocator::Allocator;
+use base::{DefaultAllocator, MatrixMN, MatrixN, SquareMatrix, VectorN};
+use constraint::{DimEq, ShapeConstraint};
 use dimension::{DimDiff, DimSub, Dynamic, U1};
 use storage::Storage;
-use allocator::Allocator;
-use constraint::{DimEq, ShapeConstraint};
 
 use linalg::householder;
 
 /// Hessenberg decomposition of a general matrix.
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "serde-serialize",
+#[cfg_attr(
-           serde(bound(serialize = "DefaultAllocator: Allocator<N, D, D> +
+    feature = "serde-serialize",
+    serde(
+        bound(
+            serialize = "DefaultAllocator: Allocator<N, D, D> +
                            Allocator<N, DimDiff<D, U1>>,
          MatrixN<N, D>: serde::Serialize,
-         VectorN<N, DimDiff<D, U1>>: serde::Serialize")))]
+         VectorN<N, DimDiff<D, U1>>: serde::Serialize"
-#[cfg_attr(feature = "serde-serialize",
+        )
-           serde(bound(deserialize = "DefaultAllocator: Allocator<N, D, D> +
+    )
+)]
+#[cfg_attr(
+    feature = "serde-serialize",
+    serde(
+        bound(
+            deserialize = "DefaultAllocator: Allocator<N, D, D> +
                            Allocator<N, DimDiff<D, U1>>,
          MatrixN<N, D>: serde::Deserialize<'de>,
-         VectorN<N, DimDiff<D, U1>>: serde::Deserialize<'de>")))]
+         VectorN<N, DimDiff<D, U1>>: serde::Deserialize<'de>"
+        )
+    )
+)]
 #[derive(Clone, Debug)]
 pub struct Hessenberg<N: Real, D: DimSub<U1>>
 where

src/linalg/householder.rs

@@ -1,10 +1,10 @@
 //! Construction of householder elementary reflections.
 
 use alga::general::Real;
-use core::{DefaultAllocator, MatrixMN, MatrixN, Unit, Vector, VectorN};
+use allocator::Allocator;
+use base::{DefaultAllocator, MatrixMN, MatrixN, Unit, Vector, VectorN};
 use dimension::Dim;
 use storage::{Storage, StorageMut};
-use allocator::Allocator;
 
 use geometry::Reflection;
 

src/linalg/inverse.rs

@@ -1,9 +1,9 @@
 use alga::general::Real;
 
-use core::{DefaultAllocator, MatrixN, SquareMatrix};
+use base::{DefaultAllocator, MatrixN, SquareMatrix};
-use core::dimension::Dim;
+use base::dimension::Dim;
-use core::storage::{Storage, StorageMut};
+use base::storage::{Storage, StorageMut};
-use core::allocator::Allocator;
+use base::allocator::Allocator;
 
 use linalg::lu;
 

src/linalg/lu.rs

@@ -1,28 +1,40 @@
 #[cfg(feature = "serde-serialize")]
 use serde;
 
-use std::mem;
 use alga::general::{Field, Real};
-use core::{DefaultAllocator, Matrix, MatrixMN, MatrixN, Scalar};
-use dimension::{Dim, DimMin, DimMinimum};
-use storage::{Storage, StorageMut};
 use allocator::{Allocator, Reallocator};
+use base::{DefaultAllocator, Matrix, MatrixMN, MatrixN, Scalar};
 use constraint::{SameNumberOfRows, ShapeConstraint};
+use dimension::{Dim, DimMin, DimMinimum};
+use std::mem;
+use storage::{Storage, StorageMut};
 
 use linalg::PermutationSequence;
 
 /// LU decomposition with partial (row) pivoting.
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "serde-serialize",
+#[cfg_attr(
-           serde(bound(serialize = "DefaultAllocator: Allocator<N, R, C> +
+    feature = "serde-serialize",
+    serde(
+        bound(
+            serialize = "DefaultAllocator: Allocator<N, R, C> +
                            Allocator<(usize, usize), DimMinimum<R, C>>,
          MatrixMN<N, R, C>: serde::Serialize,
-         PermutationSequence<DimMinimum<R, C>>: serde::Serialize")))]
+         PermutationSequence<DimMinimum<R, C>>: serde::Serialize"
-#[cfg_attr(feature = "serde-serialize",
+        )
-           serde(bound(deserialize = "DefaultAllocator: Allocator<N, R, C> +
+    )
+)]
+#[cfg_attr(
+    feature = "serde-serialize",
+    serde(
+        bound(
+            deserialize = "DefaultAllocator: Allocator<N, R, C> +
                            Allocator<(usize, usize), DimMinimum<R, C>>,
          MatrixMN<N, R, C>: serde::Deserialize<'de>,
-         PermutationSequence<DimMinimum<R, C>>: serde::Deserialize<'de>")))]
+         PermutationSequence<DimMinimum<R, C>>: serde::Deserialize<'de>"
+        )
+    )
+)]
 #[derive(Clone, Debug)]
 pub struct LU<N: Real, R: DimMin<C>, C: Dim>
 where

src/linalg/permutation_sequence.rs

@@ -1,22 +1,34 @@
 #[cfg(feature = "serde-serialize")]
 use serde;
 
-use num::One;
 use alga::general::ClosedNeg;
+use num::One;
 
-use core::{DefaultAllocator, Matrix, Scalar, VectorN};
+use allocator::Allocator;
+use base::{DefaultAllocator, Matrix, Scalar, VectorN};
 use dimension::{Dim, DimName, Dynamic, U1};
 use storage::StorageMut;
-use allocator::Allocator;
 
 /// A sequence of row or column permutations.
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "serde-serialize",
+#[cfg_attr(
-           serde(bound(serialize = "DefaultAllocator: Allocator<(usize, usize), D>,
+    feature = "serde-serialize",
-         VectorN<(usize, usize), D>: serde::Serialize")))]
+    serde(
-#[cfg_attr(feature = "serde-serialize",
+        bound(
-           serde(bound(deserialize = "DefaultAllocator: Allocator<(usize, usize), D>,
+            serialize = "DefaultAllocator: Allocator<(usize, usize), D>,
-         VectorN<(usize, usize), D>: serde::Deserialize<'de>")))]
+         VectorN<(usize, usize), D>: serde::Serialize"
+        )
+    )
+)]
+#[cfg_attr(
+    feature = "serde-serialize",
+    serde(
+        bound(
+            deserialize = "DefaultAllocator: Allocator<(usize, usize), D>,
+         VectorN<(usize, usize), D>: serde::Deserialize<'de>"
+        )
+    )
+)]
 #[derive(Clone, Debug)]
 pub struct PermutationSequence<D: Dim>
 where

src/linalg/qr.rs

@@ -2,7 +2,7 @@
 use serde;
 
 use alga::general::Real;
-use core::{DefaultAllocator, Matrix, MatrixMN, MatrixN, Unit, VectorN};
+use base::{DefaultAllocator, Matrix, MatrixMN, MatrixN, Unit, VectorN};
 use dimension::{Dim, DimMin, DimMinimum, U1};
 use storage::{Storage, StorageMut};
 use allocator::{Allocator, Reallocator};

src/linalg/schur.rs

@@ -1,28 +1,40 @@
 #[cfg(feature = "serde-serialize")]
 use serde;
 
-use std::cmp;
-use num_complex::Complex;
 use alga::general::Real;
+use num_complex::Complex;
+use std::cmp;
 
-use core::{DefaultAllocator, MatrixN, SquareMatrix, Unit, Vector2, Vector3, VectorN};
-use core::dimension::{Dim, DimDiff, DimSub, Dynamic, U1, U2, U3};
-use core::storage::Storage;
-use constraint::{DimEq, ShapeConstraint};
 use allocator::Allocator;
+use base::dimension::{Dim, DimDiff, DimSub, Dynamic, U1, U2, U3};
+use base::storage::Storage;
+use base::{DefaultAllocator, MatrixN, SquareMatrix, Unit, Vector2, Vector3, VectorN};
+use constraint::{DimEq, ShapeConstraint};
 
+use geometry::{Reflection, UnitComplex};
 use linalg::householder;
 use linalg::Hessenberg;
-use geometry::{Reflection, UnitComplex};
 
 /// Real Schur decomposition of a square matrix.
 #[cfg_attr(feature = "serde-serialize", derive(Serialize, Deserialize))]
-#[cfg_attr(feature = "serde-serialize",
+#[cfg_attr(
-           serde(bound(serialize = "DefaultAllocator: Allocator<N, D, D>,
+    feature = "serde-serialize",
-         MatrixN<N, D>: serde::Serialize")))]
+    serde(
-#[cfg_attr(feature = "serde-serialize",
+        bound(
-           serde(bound(deserialize = "DefaultAllocator: Allocator<N, D, D>,
+            serialize = "DefaultAllocator: Allocator<N, D, D>,
-         MatrixN<N, D>: serde::Deserialize<'de>")))]
+         MatrixN<N, D>: serde::Serialize"
+        )
+    )
+)]
+#[cfg_attr(
+    feature = "serde-serialize",
+    serde(
+        bound(
+            deserialize = "DefaultAllocator: Allocator<N, D, D>,
+         MatrixN<N, D>: serde::Deserialize<'de>"
+        )
+    )
+)]
 #[derive(Clone, Debug)]
 pub struct RealSchur<N: Real, D: Dim>
 where

src/linalg/solve.rs

@@ -1,10 +1,10 @@
 use alga::general::Real;
 
-use core::{DefaultAllocator, Matrix, MatrixMN, SquareMatrix, Vector};
+use base::allocator::Allocator;
-use core::dimension::{Dim, U1};
+use base::constraint::{SameNumberOfRows, ShapeConstraint};
-use core::storage::{Storage, StorageMut};
+use base::dimension::{Dim, U1};
-use core::allocator::Allocator;
+use base::storage::{Storage, StorageMut};
-use core::constraint::{SameNumberOfRows, ShapeConstraint};
+use base::{DefaultAllocator, Matrix, MatrixMN, SquareMatrix, Vector};
 
 impl<N: Real, D: Dim, S: Storage<N, D, D>> SquareMatrix<N, D, S> {
     /// Computes the solution of the linear system `self . x = b` where `x` is the unknown and only