M-Labs/nalgebra
3
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Cleanup conversion between static arrays and static matrices.

Browse Source
This commit is contained in:
Crozet Sébastien 2021-04-27 13:16:01 +02:00
parent 984bb1a639
commit 43cf22af28
1 changed files with 30 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

83
src/base/conversion.rs
View File

@ -3,7 +3,6 @@ use alloc::vec::Vec;
use simba::scalar::{SubsetOf, SupersetOf};
use std::convert::{AsMut, AsRef, From, Into};
use std::mem;
use std::ptr;
use simba::simd::{PrimitiveSimdValue, SimdValue};
@ -24,6 +23,7 @@ use crate::base::{
use crate::base::{DVector, VecStorage};
use crate::base::{SliceStorage, SliceStorageMut};
use crate::constraint::DimEq;
use crate::{SMatrix, SVector};
// TODO: too bad this won't work allo slice conversions.
impl<T1, T2, R1, C1, R2, C2> SubsetOf<OMatrix<T2, R2, C2>> for OMatrix<T1, R1, C1>
@ -103,35 +103,23 @@ impl<'a, T: Scalar, R: Dim, C: Dim, S: StorageMut<T, R, C>> IntoIterator
}
}
impl<T: Scalar, const D: usize> From<[T; D]> for SVector<T, D> {
#[inline]
fn from(arr: [T; D]) -> Self {
unsafe { Self::from_data_statically_unchecked(ArrayStorage([arr; 1])) }
}
}
impl<T: Scalar, const D: usize> Into<[T; D]> for SVector<T, D> {
#[inline]
fn into(self) -> [T; D] {
// TODO: unfortunately, we must clone because we can move out of an array.
self.data.0[0].clone()
}
}
macro_rules! impl_from_into_asref_1D(
($(($NRows: ident, $NCols: ident) => $SZ: expr);* $(;)*) => {$(
impl<T> From<[T; $SZ]> for OMatrix<T, $NRows, $NCols>
where T: Scalar,
DefaultAllocator: Allocator<T, $NRows, $NCols> {
#[inline]
fn from(arr: [T; $SZ]) -> Self {
unsafe {
let mut res = Self::new_uninitialized();
ptr::copy_nonoverlapping(&arr[0], (*res.as_mut_ptr()).data.ptr_mut(), $SZ);
res.assume_init()
}
}
}
impl<T, S> Into<[T; $SZ]> for Matrix<T, $NRows, $NCols, S>
where T: Scalar,
S: ContiguousStorage<T, $NRows, $NCols> {
#[inline]
fn into(self) -> [T; $SZ] {
let mut res = mem::MaybeUninit::<[T; $SZ]>::uninit();
unsafe { ptr::copy_nonoverlapping(self.data.ptr(), res.as_mut_ptr() as *mut T, $SZ) };
unsafe { res.assume_init() }
}
}
impl<T, S> AsRef<[T; $SZ]> for Matrix<T, $NRows, $NCols, S>
where T: Scalar,
S: ContiguousStorage<T, $NRows, $NCols> {
@ -171,33 +159,22 @@ impl_from_into_asref_1D!(
(U13, U1) => 13; (U14, U1) => 14; (U15, U1) => 15; (U16, U1) => 16;
);
impl<T: Scalar, const R: usize, const C: usize> From<[[T; R]; C]> for SMatrix<T, R, C> {
#[inline]
fn from(arr: [[T; R]; C]) -> Self {
unsafe { Self::from_data_statically_unchecked(ArrayStorage(arr)) }
}
}
impl<T: Scalar, const R: usize, const C: usize> Into<[[T; R]; C]> for SMatrix<T, R, C> {
#[inline]
fn into(self) -> [[T; R]; C] {
self.data.0
}
}
macro_rules! impl_from_into_asref_2D(
($(($NRows: ty, $NCols: ty) => ($SZRows: expr, $SZCols: expr));* $(;)*) => {$(
impl<T: Scalar> From<[[T; $SZRows]; $SZCols]> for OMatrix<T, $NRows, $NCols>
where DefaultAllocator: Allocator<T, $NRows, $NCols> {
#[inline]
fn from(arr: [[T; $SZRows]; $SZCols]) -> Self {
unsafe {
let mut res = Self::new_uninitialized();
ptr::copy_nonoverlapping(&arr[0][0], (*res.as_mut_ptr()).data.ptr_mut(), $SZRows * $SZCols);
res.assume_init()
}
}
}
impl<T: Scalar, S> Into<[[T; $SZRows]; $SZCols]> for Matrix<T, $NRows, $NCols, S>
where S: ContiguousStorage<T, $NRows, $NCols> {
#[inline]
fn into(self) -> [[T; $SZRows]; $SZCols] {
let mut res = mem::MaybeUninit::<[[T; $SZRows]; $SZCols]>::uninit();
unsafe { ptr::copy_nonoverlapping(self.data.ptr(), res.as_mut_ptr() as *mut T, $SZRows * $SZCols) };
unsafe { res.assume_init() }
}
}
impl<T: Scalar, S> AsRef<[[T; $SZRows]; $SZCols]> for Matrix<T, $NRows, $NCols, S>
where S: ContiguousStorage<T, $NRows, $NCols> {
#[inline]