nalgebra/tests/linalg/qr.rs
2021-02-28 17:52:14 +01:00

119 lines
4.4 KiB
Rust

#![cfg(feature = "proptest-support")]
macro_rules! gen_tests(
($module: ident, $scalar: expr, $scalar_type: ty) => {
mod $module {
use na::{DMatrix, DVector, Matrix4x3, Vector4};
use std::cmp;
#[allow(unused_imports)]
use crate::core::helper::{RandScalar, RandComplex};
use crate::proptest::*;
use proptest::{prop_assert, proptest};
proptest! {
#[test]
fn qr(m in dmatrix_($scalar)) {
let qr = m.clone().qr();
let q = qr.q();
let r = qr.r();
prop_assert!(relative_eq!(m, &q * r, epsilon = 1.0e-7));
prop_assert!(q.is_orthogonal(1.0e-7));
}
#[test]
fn qr_static_5_3(m in matrix5x3_($scalar)) {
let qr = m.qr();
let q = qr.q();
let r = qr.r();
prop_assert!(relative_eq!(m, q * r, epsilon = 1.0e-7));
prop_assert!(q.is_orthogonal(1.0e-7));
}
#[test]
fn qr_static_3_5(m in matrix3x5_($scalar)) {
let qr = m.qr();
let q = qr.q();
let r = qr.r();
prop_assert!(relative_eq!(m, q * r, epsilon = 1.0e-7));
prop_assert!(q.is_orthogonal(1.0e-7));
}
#[test]
fn qr_static_square(m in matrix4_($scalar)) {
let qr = m.qr();
let q = qr.q();
let r = qr.r();
prop_assert!(relative_eq!(m, q * r, epsilon = 1.0e-7));
prop_assert!(q.is_orthogonal(1.0e-7));
}
#[test]
fn qr_solve(n in PROPTEST_MATRIX_DIM, nb in PROPTEST_MATRIX_DIM) {
let m = DMatrix::<$scalar_type>::new_random(n, n).map(|e| e.0);
let qr = m.clone().qr();
let b1 = DVector::<$scalar_type>::new_random(n).map(|e| e.0);
let b2 = DMatrix::<$scalar_type>::new_random(n, nb).map(|e| e.0);
if qr.is_invertible() {
let sol1 = qr.solve(&b1).unwrap();
let sol2 = qr.solve(&b2).unwrap();
prop_assert!(relative_eq!(&m * sol1, b1, epsilon = 1.0e-6));
prop_assert!(relative_eq!(&m * sol2, b2, epsilon = 1.0e-6));
}
}
#[test]
fn qr_solve_static(m in matrix4_($scalar)) {
let qr = m.qr();
let b1 = Vector4::<$scalar_type>::new_random().map(|e| e.0);
let b2 = Matrix4x3::<$scalar_type>::new_random().map(|e| e.0);
if qr.is_invertible() {
let sol1 = qr.solve(&b1).unwrap();
let sol2 = qr.solve(&b2).unwrap();
prop_assert!(relative_eq!(m * sol1, b1, epsilon = 1.0e-6));
prop_assert!(relative_eq!(m * sol2, b2, epsilon = 1.0e-6));
}
}
#[test]
fn qr_inverse(n in PROPTEST_MATRIX_DIM) {
let n = cmp::max(1, cmp::min(n, 15)); // To avoid slowing down the test too much.
let m = DMatrix::<$scalar_type>::new_random(n, n).map(|e| e.0);
if let Some(m1) = m.clone().qr().try_inverse() {
let id1 = &m * &m1;
let id2 = &m1 * &m;
prop_assert!(id1.is_identity(1.0e-5));
prop_assert!(id2.is_identity(1.0e-5));
}
}
#[test]
fn qr_inverse_static(m in matrix4_($scalar)) {
let qr = m.qr();
if let Some(m1) = qr.try_inverse() {
let id1 = &m * &m1;
let id2 = &m1 * &m;
prop_assert!(id1.is_identity(1.0e-5));
prop_assert!(id2.is_identity(1.0e-5));
}
}
}
}
}
);
gen_tests!(complex, complex_f64(), RandComplex<f64>);
gen_tests!(f64, PROPTEST_F64, RandScalar<f64>);