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/* Copyright 2017. Martin Uecker.
* All rights reserved. Use of this source code is governed by
* a BSD-style license which can be found in the LICENSE file.
*
* Authors:
* 2017 Martin Uecker <martin.uecker@med.uni-goettingen.de>
*/
#include <complex.h>
#include "num/multind.h"
#include "num/flpmath.h"
#include "num/rand.h"
#include "linops/someops.h"
#include "linops/linop.h"
#include "linops/lintest.h"
#include "misc/misc.h"
#include "misc/debug.h"
#include "utest.h"
static bool test_linop_matrix(void)
{
enum { N = 3 };
int A = 2;
int B = 3;
int C = 4;
long odims[N] = { C, 1, A };
long idims1[N] = { 1, B, A };
long idims2[N] = { C, B, 1 };
complex float* dst1 = md_alloc(N, odims, CFL_SIZE);
complex float* dst2 = md_alloc(N, odims, CFL_SIZE);
complex float* src1 = md_alloc(N, idims1, CFL_SIZE);
complex float* src2 = md_alloc(N, idims2, CFL_SIZE);
md_gaussian_rand(N, odims, dst1); // test complete fill
md_gaussian_rand(N, odims, dst2); // test complete fill
md_gaussian_rand(N, idims1, src1);
md_gaussian_rand(N, idims2, src2);
struct linop_s* mat = linop_matrix_create(N, odims, idims2, idims1, src1);
md_zmatmul(N, odims, dst1, idims1, src1, idims2, src2);
linop_forward(mat, N, odims, dst2, N, idims2, src2);
double err = md_znrmse(N, odims, dst2, dst1);
linop_free(mat);
md_free(src1);
md_free(src2);
md_free(dst1);
md_free(dst2);
return (err < UT_TOL);
}
static bool test_linop_matrix_adjoint(void)
{
enum { N = 3 };
int A = 2;
int B = 3;
int C = 4;
long odims[N] = { C, 1, A };
long idims1[N] = { 1, B, A };
long idims2[N] = { C, B, 1 };
complex float* src1 = md_alloc(N, idims1, CFL_SIZE);
md_gaussian_rand(N, idims1, src1);
struct linop_s* mat = linop_matrix_create(N, odims, idims2, idims1, src1);
float diff = linop_test_adjoint(mat);
debug_printf(DP_DEBUG1, "adjoint diff: %f\n", diff);
bool ret = (diff < 1.E-4f);
linop_free(mat);
md_free(src1);
return ret;
}
static bool test_linop_matrix_normal(void)
{
enum { N = 3 };
int A = 2;
int B = 3;
int C = 4;
long odims[N] = { C, 1, A };
long idims1[N] = { 1, B, A };
long idims2[N] = { C, B, 1 };
complex float* src1 = md_alloc(N, idims1, CFL_SIZE);
md_gaussian_rand(N, idims1, src1);
struct linop_s* mat = linop_matrix_create(N, odims, idims2, idims1, src1);
float nrmse = linop_test_normal(mat);
debug_printf(DP_DEBUG1, "normal nrmse: %f\n", nrmse);
bool ret = (nrmse < 1.E-6f);
linop_free(mat);
md_free(src1);
return ret;
}
static bool test_linop_matrix_chain(void)
{
int A = 9;
int B = 7;
int C = 3;
int D = 2;
int E = 5;
enum { N = 8 };
long odims[N] = { D, C, 1, 1, 1, 1, C, D };
long idims0[N] = { D, 1, 1, A, E, 1, A, D };
long idims1[N] = { D, 1, B, A, 1, B, A, D };
long tdims[N] = { D, 1, B, 1, E, B, 1, D };
long idims2[N] = { D, C, B, 1, E, B, C, D };
complex float* dst1 = md_alloc(N, odims, CFL_SIZE);
complex float* dst2 = md_alloc(N, odims, CFL_SIZE);
complex float* src0 = md_alloc(N, idims0, CFL_SIZE);
complex float* src1 = md_alloc(N, idims1, CFL_SIZE);
complex float* src2 = md_alloc(N, idims2, CFL_SIZE);
md_gaussian_rand(N, odims, dst1); // test complete fill
md_gaussian_rand(N, odims, dst2); // test complete fill
md_gaussian_rand(N, idims0, src0);
md_gaussian_rand(N, idims1, src1);
md_gaussian_rand(N, idims2, src2);
struct linop_s* mat1 = linop_matrix_create(N, tdims, idims0, idims1, src1);
struct linop_s* mat2 = linop_matrix_create(N, odims, tdims, idims2, src2);
struct linop_s* matA = linop_chain(mat1, mat2);
linop_forward(matA, N, odims, dst1, N, idims0, src0);
linop_free(matA);
struct linop_s* matB = linop_matrix_chain(mat1, mat2);
linop_forward(matB, N, odims, dst2, N, idims0, src0);
linop_free(matB);
double err = md_znrmse(N, odims, dst2, dst1);
linop_free(mat1);
linop_free(mat2);
md_free(src0);
md_free(src1);
md_free(src2);
md_free(dst1);
md_free(dst2);
return (err < 1.E-5);
}
UT_REGISTER_TEST(test_linop_matrix);
UT_REGISTER_TEST(test_linop_matrix_adjoint);
UT_REGISTER_TEST(test_linop_matrix_normal);
UT_REGISTER_TEST(test_linop_matrix_chain);
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