Add more functions to initialize DMat and DVec.
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a00860df41
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40
src/dmat.rs
40
src/dmat.rs
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@ -1,5 +1,5 @@
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use std::num::{One, Zero};
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use std::vec::from_elem;
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use std::vec;
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use std::cmp::ApproxEq;
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use std::util;
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use traits::inv::Inv;
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@ -23,11 +23,7 @@ impl<N: Zero + Clone> DMat<N> {
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/// components.
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#[inline]
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pub fn new_zeros(nrows: uint, ncols: uint) -> DMat<N> {
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DMat {
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nrows: nrows,
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ncols: ncols,
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mij: from_elem(nrows * ncols, Zero::zero())
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}
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DMat::from_elem(nrows, ncols, Zero::zero())
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}
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/// Tests if all components of the matrix are zeroes.
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@ -37,6 +33,38 @@ impl<N: Zero + Clone> DMat<N> {
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}
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}
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impl<N: One + Clone> DMat<N> {
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/// Builds a matrix filled with a given constant.
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#[inline]
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pub fn new_ones(nrows: uint, ncols: uint) -> DMat<N> {
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DMat::from_elem(nrows, ncols, One::one())
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}
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}
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impl<N: Clone> DMat<N> {
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/// Builds a matrix filled with a given constant.
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#[inline]
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pub fn from_elem(nrows: uint, ncols: uint, val: N) -> DMat<N> {
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DMat {
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nrows: nrows,
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ncols: ncols,
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mij: vec::from_elem(nrows * ncols, val)
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}
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}
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}
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impl<N> DMat<N> {
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/// Builds a matrix filled with a given constant.
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#[inline(always)]
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pub fn from_fn(nrows: uint, ncols: uint, f: &fn(uint, uint) -> N) -> DMat<N> {
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DMat {
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nrows: nrows,
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ncols: ncols,
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mij: vec::from_fn(nrows * ncols, |i| { let m = i % ncols; f(m, m - i * ncols) })
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}
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}
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}
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// FIXME: add a function to modify the dimension (to avoid useless allocations)?
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impl<N: One + Zero + Clone> DMat<N> {
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31
src/dvec.rs
31
src/dvec.rs
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@ -1,6 +1,6 @@
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use std::num::{Zero, One, Algebraic};
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use std::vec;
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use std::vec::{VecIterator, VecMutIterator};
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use std::vec::from_elem;
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use std::cmp::ApproxEq;
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use std::iterator::FromIterator;
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use traits::vector::{Vec, AlgebraicVec};
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@ -22,7 +22,7 @@ impl<N: Zero + Clone> DVec<N> {
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/// * `dim` - The dimension of the vector.
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#[inline]
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pub fn new_zeros(dim: uint) -> DVec<N> {
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DVec { at: from_elem(dim, Zero::zero()) }
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DVec::from_elem(dim, Zero::zero())
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}
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/// Tests if all components of the vector are zeroes.
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@ -32,6 +32,33 @@ impl<N: Zero + Clone> DVec<N> {
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}
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}
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impl<N: One + Clone> DVec<N> {
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/// Builds a vector filled with ones.
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///
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/// # Arguments
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/// * `dim` - The dimension of the vector.
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#[inline]
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pub fn new_ones(dim: uint) -> DVec<N> {
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DVec::from_elem(dim, One::one())
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}
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}
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impl<N: Clone> DVec<N> {
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/// Builds a vector filled with a constant.
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#[inline]
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pub fn from_elem(dim: uint, elem: N) -> DVec<N> {
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DVec { at: vec::from_elem(dim, elem) }
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}
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}
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impl<N: Clone> DVec<N> {
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/// Builds a vector filled with the result of a function.
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#[inline(always)]
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pub fn from_fn(dim: uint, f: &fn(uint) -> N) -> DVec<N> {
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DVec { at: vec::from_fn(dim, |i| f(i)) }
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}
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}
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impl<N> Iterable<N> for DVec<N> {
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fn iter<'l>(&'l self) -> VecIterator<'l, N> {
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self.at.iter()
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