71 lines
1.5 KiB
C++
71 lines
1.5 KiB
C++
/* SPDX-License-Identifier: Apache-2.0 */
|
|
|
|
#include "testing/testing.h"
|
|
|
|
#include "BLI_math_solvers.h"
|
|
|
|
TEST(math_solvers, Tridiagonal1)
|
|
{
|
|
float a[1] = {1}; // ignored
|
|
float b[1] = {2};
|
|
float c[1] = {1}; // ignored
|
|
float d[1] = {4};
|
|
float x[1];
|
|
|
|
EXPECT_TRUE(BLI_tridiagonal_solve(a, b, c, d, x, 1));
|
|
EXPECT_FLOAT_EQ(x[0], 2);
|
|
}
|
|
|
|
TEST(math_solvers, Tridiagonal3)
|
|
{
|
|
float a[3] = {1, 2, 3}; // 1 ignored
|
|
float b[3] = {4, 5, 6};
|
|
float c[3] = {7, 8, 9}; // 9 ignored
|
|
float d[3] = {18, 36, 24};
|
|
float x[3];
|
|
|
|
EXPECT_TRUE(BLI_tridiagonal_solve(a, b, c, d, x, 3));
|
|
EXPECT_FLOAT_EQ(x[0], 1);
|
|
EXPECT_FLOAT_EQ(x[1], 2);
|
|
EXPECT_FLOAT_EQ(x[2], 3);
|
|
}
|
|
|
|
TEST(math_solvers, CyclicTridiagonal1)
|
|
{
|
|
float a[1] = {1};
|
|
float b[1] = {2};
|
|
float c[1] = {1};
|
|
float d[1] = {4};
|
|
float x[1];
|
|
|
|
EXPECT_TRUE(BLI_tridiagonal_solve_cyclic(a, b, c, d, x, 1));
|
|
EXPECT_FLOAT_EQ(x[0], 1);
|
|
}
|
|
|
|
TEST(math_solvers, CyclicTridiagonal2)
|
|
{
|
|
float a[2] = {1, 2};
|
|
float b[2] = {3, 4};
|
|
float c[2] = {5, 6};
|
|
float d[2] = {15, 16};
|
|
float x[2];
|
|
|
|
EXPECT_TRUE(BLI_tridiagonal_solve_cyclic(a, b, c, d, x, 2));
|
|
EXPECT_FLOAT_EQ(x[0], 1);
|
|
EXPECT_FLOAT_EQ(x[1], 2);
|
|
}
|
|
|
|
TEST(math_solvers, CyclicTridiagonal3)
|
|
{
|
|
float a[3] = {1, 2, 3};
|
|
float b[3] = {4, 5, 6};
|
|
float c[3] = {7, 8, 9};
|
|
float d[3] = {21, 36, 33};
|
|
float x[3];
|
|
|
|
EXPECT_TRUE(BLI_tridiagonal_solve_cyclic(a, b, c, d, x, 3));
|
|
EXPECT_FLOAT_EQ(x[0], 1);
|
|
EXPECT_FLOAT_EQ(x[1], 2);
|
|
EXPECT_FLOAT_EQ(x[2], 3);
|
|
}
|