forked from M-Labs/nalgebra
36 lines
1.1 KiB
Rust
36 lines
1.1 KiB
Rust
use std::cmp;
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use na::{DMatrix, Matrix2, Matrix4, SymmetricTridiagonal};
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#[cfg(feature = "arbitrary")]
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quickcheck! {
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fn symm_tridiagonal(n: usize) -> bool {
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let n = cmp::max(1, cmp::min(n, 50));
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let m = DMatrix::<f64>::new_random(n, n);
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let tri = SymmetricTridiagonal::new(m.clone());
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let recomp = tri.recompose();
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println!("{}{}", m.lower_triangle(), recomp.lower_triangle());
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relative_eq!(m.lower_triangle(), recomp.lower_triangle(), epsilon = 1.0e-7)
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}
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fn symm_tridiagonal_static_square(m: Matrix4<f64>) -> bool {
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let tri = SymmetricTridiagonal::new(m);
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println!("{}{}", tri.internal_tri(), tri.off_diagonal());
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let recomp = tri.recompose();
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println!("{}{}", m.lower_triangle(), recomp.lower_triangle());
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relative_eq!(m.lower_triangle(), recomp.lower_triangle(), epsilon = 1.0e-7)
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}
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fn symm_tridiagonal_static_square_2x2(m: Matrix2<f64>) -> bool {
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let tri = SymmetricTridiagonal::new(m);
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let recomp = tri.recompose();
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relative_eq!(m.lower_triangle(), recomp.lower_triangle(), epsilon = 1.0e-7)
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}
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}
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