forked from M-Labs/nalgebra
41 lines
1.1 KiB
Rust
41 lines
1.1 KiB
Rust
use na::{Const, DimMin, RealField, Scalar};
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use crate::aliases::{TMat, TVec};
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use crate::traits::Number;
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/// The determinant of the matrix `m`.
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pub fn determinant<T: RealField, const D: usize>(m: &TMat<T, D, D>) -> T
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where
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Const<D>: DimMin<Const<D>, Output = Const<D>>,
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{
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m.determinant()
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}
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/// The inverse of the matrix `m`.
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pub fn inverse<T: RealField, const D: usize>(m: &TMat<T, D, D>) -> TMat<T, D, D> {
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m.clone()
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.try_inverse()
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.unwrap_or_else(TMat::<T, D, D>::zeros)
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}
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/// Component-wise multiplication of two matrices.
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pub fn matrix_comp_mult<T: Number, const R: usize, const C: usize>(
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x: &TMat<T, R, C>,
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y: &TMat<T, R, C>,
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) -> TMat<T, R, C> {
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x.component_mul(y)
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}
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/// Treats the first parameter `c` as a column vector and the second parameter `r` as a row vector and does a linear algebraic matrix multiply `c * r`.
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pub fn outer_product<T: Number, const R: usize, const C: usize>(
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c: &TVec<T, R>,
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r: &TVec<T, C>,
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) -> TMat<T, R, C> {
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c * r.transpose()
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}
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/// The transpose of the matrix `m`.
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pub fn transpose<T: Scalar, const R: usize, const C: usize>(x: &TMat<T, R, C>) -> TMat<T, C, R> {
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x.transpose()
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}
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