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/* Copyright 2022. Uecker Lab. University Medical Center Göttingen.
* All rights reserved. Use of this source code is governed by
* a BSD-style license which can be found in the LICENSE file.
*
* Authors: Moritz Blumenthal
*/
#include <complex.h>
#include "misc/debug.h"
#include "num/multind.h"
#include "num/flpmath.h"
#include "num/fft.h"
#include "num/rand.h"
#include "utest.h"
static bool test_fftmod_optimize(int N, const long dims[N], unsigned long flags, bool inv)
{
complex float* ptr1 = md_alloc(N, dims, CFL_SIZE);
md_gaussian_rand(N, dims, ptr1);
complex float* ptr2 = md_alloc(N, dims, CFL_SIZE);
md_copy(N, dims, ptr2, ptr1, CFL_SIZE);
(inv ? ifftmod : fftmod)(N, dims, flags, ptr1, ptr1);
for (int i = 0; i < N; i++)
(inv ? ifftmod : fftmod)(N, dims, flags & MD_BIT(i), ptr2, ptr2);
float err = md_znrmse(N, dims, ptr1, ptr2);
md_free(ptr1);
md_free(ptr2);
UT_ASSERT(err < UT_TOL);
}
static bool test_fftmod1(void) { return test_fftmod_optimize(4, MD_DIMS(16, 16, 1, 4), 7, false); }
static bool test_fftmod2(void) { return test_fftmod_optimize(4, MD_DIMS(16, 16, 4, 4), 7, false); }
static bool test_fftmod3(void) { return test_fftmod_optimize(4, MD_DIMS(16, 17, 4, 4), 7, false); }
static bool test_ifftmod1(void) { return test_fftmod_optimize(4, MD_DIMS(16, 16, 1, 4), 7, true); }
static bool test_ifftmod2(void) { return test_fftmod_optimize(4, MD_DIMS(16, 16, 4, 4), 7, true); }
static bool test_ifftmod3(void) { return test_fftmod_optimize(4, MD_DIMS(16, 17, 4, 4), 7, true); }
UT_REGISTER_TEST(test_fftmod1);
UT_REGISTER_TEST(test_fftmod2);
UT_REGISTER_TEST(test_fftmod3);
UT_REGISTER_TEST(test_ifftmod1);
UT_REGISTER_TEST(test_ifftmod2);
UT_REGISTER_TEST(test_ifftmod3);
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