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Make flip_XX impl on Matrix

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Magnus Ulimoen
2021-03-15 19:31:41 +01:00
parent 6fc045ae17
commit e43e71a4d8
8 changed files with 54 additions and 59 deletions
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2
sbp/src/operators/algos.rs
View File

@@ -3,7 +3,7 @@ use ndarray::s;
use num_traits::Zero;
pub(crate) mod constmatrix;
pub(crate) use constmatrix::{flip_lr, flip_sign, flip_ud, ColVector, Matrix, RowVector};
pub(crate) use constmatrix::{ColVector, Matrix, RowVector};
#[cfg(feature = "fast-float")]
mod fastfloat;

88
sbp/src/operators/algos/constmatrix.rs
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@@ -263,70 +263,66 @@ mod approx {
}
}
pub(crate) const fn flip_ud<const M: usize, const N: usize>(
mut m: Matrix<super::Float, M, N>,
) -> Matrix<super::Float, M, N> {
let mut i = 0;
while i < M / 2 {
let tmp = m.data[i];
m.data[i] = m.data[M - 1 - i];
m.data[M - 1 - i] = tmp;
i += 1;
impl<const M: usize, const N: usize> Matrix<super::Float, M, N> {
pub(crate) const fn flip_ud(&self) -> Self {
let mut m = Self::new([[0.0; N]; M]);
let mut i = 0;
while i < M {
m.data[M - 1 - i] = self.data[i];
i += 1;
}
m
}
pub(crate) const fn flip_lr(&self) -> Self {
let mut m = Self::new([[0.0; N]; M]);
let mut i = 0;
while i < M {
let mut j = 0;
while j < N {
m.data[i][N - 1 - j] = self.data[i][j];
j += 1;
}
i += 1;
}
m
}
/// Flip all sign bits
pub(crate) const fn flip_sign(&self) -> Self {
let mut m = Self::new([[0.0; N]; M]);
let mut i = 0;
while i < M {
let mut j = 0;
while j < N {
m.data[i][j] = -self.data[i][j];
j += 1;
}
i += 1;
}
m
}
m
}
pub(crate) const fn flip_lr<const M: usize, const N: usize>(
mut m: Matrix<super::Float, M, N>,
) -> Matrix<super::Float, M, N> {
let mut i = 0;
while i < M {
let mut j = 0;
while j < N / 2 {
let tmp = m.data[i][j];
m.data[i][j] = m.data[i][N - 1 - j];
m.data[i][N - 1 - j] = tmp;
j += 1;
}
i += 1;
}
m
}
/// Flip all sign bits
pub(crate) const fn flip_sign<const M: usize, const N: usize>(
mut m: Matrix<super::Float, M, N>,
) -> Matrix<super::Float, M, N> {
let mut i = 0;
while i < M {
let mut j = 0;
while j < N {
m.data[i][j] = -m.data[i][j];
j += 1;
}
i += 1;
}
m
}
mod flipping {
use super::*;
#[test]
fn flip_lr_test() {
let m = Matrix::new([[1.0, 2.0, 3.0, 4.0]]);
let flipped = flip_lr(m);
let flipped = m.flip_lr();
assert_eq!(flipped, Matrix::new([[4.0, 3.0, 2.0, 1.0]]));
let m = Matrix::new([[1.0, 2.0, 3.0, 4.0, 5.0]]);
let flipped = flip_lr(m);
let flipped = m.flip_lr();
assert_eq!(flipped, Matrix::new([[5.0, 4.0, 3.0, 2.0, 1.0]]));
}
#[test]
fn flip_ud_test() {
let m = Matrix::new([[1.0], [2.0], [3.0], [4.0]]);
let flipped = flip_ud(m);
let flipped = m.flip_ud();
assert_eq!(flipped, Matrix::new([[4.0], [3.0], [2.0], [1.0]]));
let m = Matrix::new([[1.0], [2.0], [3.0], [4.0], [5.0]]);
let flipped = flip_ud(m);
let flipped = m.flip_ud();
assert_eq!(flipped, Matrix::new([[5.0], [4.0], [3.0], [2.0], [1.0]]));
}
}

4
sbp/src/operators/traditional4.rs
View File

@@ -25,7 +25,7 @@ impl SBP4 {
[3.0/98.0, 0.0, -59.0/98.0, 0.0, 32.0/49.0, -4.0/49.0]
]);
const DIFF_BLOCKEND: super::Matrix<Float, 4, 6> =
super::flip_sign(super::flip_ud(super::flip_lr(Self::DIFF_BLOCK)));
Self::DIFF_BLOCK.flip_lr().flip_ud().flip_sign();
const DIFF: BlockMatrix<Float, 4, 6, 5> =
BlockMatrix::new(Self::DIFF_BLOCK, Self::DIFF_DIAG, Self::DIFF_BLOCKEND);
@@ -44,7 +44,7 @@ impl SBP4 {
const D2: BlockMatrix<Float, 4, 6, 5> = BlockMatrix::new(
Self::D2BLOCK,
Self::D2DIAG,
super::flip_ud(super::flip_lr(Self::D2BLOCK)),
Self::D2BLOCK.flip_lr().flip_ud(),
);
}

2
sbp/src/operators/traditional8.rs
View File

@@ -30,7 +30,7 @@ impl SBP8 {
const DIFF: BlockMatrix<Float, 8, 12, 9> = BlockMatrix::new(
Self::DIFF_BLOCK,
Self::DIFF_DIAG,
super::flip_sign(super::flip_ud(super::flip_lr(Self::DIFF_BLOCK))),
Self::DIFF_BLOCK.flip_lr().flip_ud().flip_sign(),
);
}

5
sbp/src/operators/upwind4.rs
View File

@@ -24,8 +24,7 @@ impl Upwind4 {
const DIFF_DIAG: RowVector<Float, 7> = RowVector::new([[
-1.0 / 24.0, 1.0 / 4.0, -7.0 / 8.0, 0.0, 7.0 / 8.0, -1.0 / 4.0, 1.0 / 24.0
]]);
const DIFF_BLOCKEND: Matrix<Float, 4, 7> =
super::flip_sign(super::flip_ud(super::flip_lr(Self::DIFF_BLOCK)));
const DIFF_BLOCKEND: Matrix<Float, 4, 7> = Self::DIFF_BLOCK.flip_lr().flip_ud().flip_sign();
const DIFF: BlockMatrix<Float, 4, 7, 7> =
BlockMatrix::new(Self::DIFF_BLOCK, Self::DIFF_DIAG, Self::DIFF_BLOCKEND);
@@ -41,7 +40,7 @@ impl Upwind4 {
const DISS_DIAG: RowVector<Float, 7> = Matrix::new([[
1.0 / 24.0, -1.0 / 4.0, 5.0 / 8.0, -5.0 / 6.0, 5.0 / 8.0, -1.0 / 4.0, 1.0 / 24.0
]]);
const DISS_BLOCKEND: Matrix<Float, 4, 7> = super::flip_ud(super::flip_lr(Self::DISS_BLOCK));
const DISS_BLOCKEND: Matrix<Float, 4, 7> = Self::DISS_BLOCK.flip_lr().flip_ud();
const DISS: BlockMatrix<Float, 4, 7, 7> =
BlockMatrix::new(Self::DISS_BLOCK, Self::DISS_DIAG, Self::DISS_BLOCKEND);

4
sbp/src/operators/upwind4h2.rs
View File

@@ -27,7 +27,7 @@ impl Upwind4h2 {
const DIFF: BlockMatrix<Float, 4, 7, 7> = BlockMatrix::new(
Self::DIFF_BLOCK,
Self::DIFF_DIAG,
super::flip_sign(super::flip_ud(super::flip_lr(Self::DIFF_BLOCK))),
Self::DIFF_BLOCK.flip_lr().flip_ud().flip_sign(),
);
#[rustfmt::skip]
@@ -45,7 +45,7 @@ impl Upwind4h2 {
const DISS: BlockMatrix<Float, 4, 7, 7> = BlockMatrix::new(
Self::DISS_BLOCK,
Self::DISS_DIAG,
super::flip_ud(super::flip_lr(Self::DISS_BLOCK)),
Self::DISS_BLOCK.flip_lr().flip_ud(),
);
}

4
sbp/src/operators/upwind9.rs
View File

@@ -31,7 +31,7 @@ impl Upwind9 {
const DIFF: BlockMatrix<Float, 8, 13, 11> = BlockMatrix::new(
Self::DIFF_BLOCK,
Self::DIFF_DIAG,
super::flip_sign(super::flip_ud(super::flip_lr(Self::DIFF_BLOCK))),
Self::DIFF_BLOCK.flip_lr().flip_ud().flip_sign(),
);
#[rustfmt::skip]
@@ -53,7 +53,7 @@ impl Upwind9 {
const DISS: BlockMatrix<Float, 8, 13, 11> = BlockMatrix::new(
Self::DISS_BLOCK,
Self::DISS_DIAG,
super::flip_ud(super::flip_lr(Self::DISS_BLOCK)),
Self::DISS_BLOCK.flip_lr().flip_ud(),
);
}

4
sbp/src/operators/upwind9h2.rs
View File

@@ -31,7 +31,7 @@ impl Upwind9h2 {
const DIFF: BlockMatrix<Float, 8, 13, 11> = BlockMatrix::new(
Self::DIFF_BLOCK,
Self::DIFF_DIAG,
super::flip_sign(super::flip_ud(super::flip_lr(Self::DIFF_BLOCK))),
Self::DIFF_BLOCK.flip_lr().flip_ud().flip_sign(),
);
#[rustfmt::skip]
@@ -53,7 +53,7 @@ impl Upwind9h2 {
const DISS: BlockMatrix<Float, 8, 13, 11> = BlockMatrix::new(
Self::DISS_BLOCK,
Self::DISS_DIAG,
super::flip_ud(super::flip_lr(Self::DISS_BLOCK)),
Self::DISS_BLOCK.flip_lr().flip_ud(),
);
}