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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/smawk/tests/random_monge/mod.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
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-rw-r--r--vendor/smawk/tests/random_monge/mod.rs83
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diff --git a/vendor/smawk/tests/random_monge/mod.rs b/vendor/smawk/tests/random_monge/mod.rs
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--- a/vendor/smawk/tests/random_monge/mod.rs
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@@ -1,83 +0,0 @@
-//! Test functionality for generating random Monge matrices.
-
-// The code is put here so we can reuse it in different integration
-// tests, without Cargo finding it when `cargo test` is run. See the
-// section on "Submodules in Integration Tests" in
-// https://doc.rust-lang.org/book/ch11-03-test-organization.html
-
-use ndarray::{s, Array2};
-use num_traits::PrimInt;
-use rand::distributions::{Distribution, Standard};
-use rand::Rng;
-
-/// A Monge matrix can be decomposed into one of these primitive
-/// building blocks.
-#[derive(Copy, Clone)]
-pub enum MongePrim {
- ConstantRows,
- ConstantCols,
- UpperRightOnes,
- LowerLeftOnes,
-}
-
-impl MongePrim {
- /// Generate a Monge matrix from a primitive.
- pub fn to_matrix<T: PrimInt, R: Rng>(&self, m: usize, n: usize, rng: &mut R) -> Array2<T>
- where
- Standard: Distribution<T>,
- {
- let mut matrix = Array2::from_elem((m, n), T::zero());
- // Avoid panic in UpperRightOnes and LowerLeftOnes below.
- if m == 0 || n == 0 {
- return matrix;
- }
-
- match *self {
- MongePrim::ConstantRows => {
- for mut row in matrix.rows_mut() {
- if rng.gen::<bool>() {
- row.fill(T::one())
- }
- }
- }
- MongePrim::ConstantCols => {
- for mut col in matrix.columns_mut() {
- if rng.gen::<bool>() {
- col.fill(T::one())
- }
- }
- }
- MongePrim::UpperRightOnes => {
- let i = rng.gen_range(0..(m + 1) as isize);
- let j = rng.gen_range(0..(n + 1) as isize);
- matrix.slice_mut(s![..i, -j..]).fill(T::one());
- }
- MongePrim::LowerLeftOnes => {
- let i = rng.gen_range(0..(m + 1) as isize);
- let j = rng.gen_range(0..(n + 1) as isize);
- matrix.slice_mut(s![-i.., ..j]).fill(T::one());
- }
- }
-
- matrix
- }
-}
-
-/// Generate a random Monge matrix.
-pub fn random_monge_matrix<R: Rng, T: PrimInt>(m: usize, n: usize, rng: &mut R) -> Array2<T>
-where
- Standard: Distribution<T>,
-{
- let monge_primitives = [
- MongePrim::ConstantRows,
- MongePrim::ConstantCols,
- MongePrim::LowerLeftOnes,
- MongePrim::UpperRightOnes,
- ];
- let mut matrix = Array2::from_elem((m, n), T::zero());
- for _ in 0..(m + n) {
- let monge = monge_primitives[rng.gen_range(0..monge_primitives.len())];
- matrix = matrix + monge.to_matrix(m, n, rng);
- }
- matrix
-}