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/* Copyright 2022. 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:
* Martin Uecker
*/
#include <math.h>
#include <stdio.h>
#include "num/qform.h"
#include "utest.h"
static bool test_quadratic_fit(void)
{
float qf[3] = { 3., -1., 0.4 };
float angles[10];
float val[10];
for (int i = 0; i < 10; i++) {
angles[i] = 2. * M_PI * i / 10.;
val[i] = quadratic_form(qf, angles[i]);
}
float qf2[3];
fit_quadratic_form(qf2, 10, angles, val);
float d = powf(qf2[0] - qf[0], 2.)
+ powf(qf2[1] - qf[1], 2.)
+ powf(qf2[2] - qf[2], 2.);
return (d < 1.E-12);
}
UT_REGISTER_TEST(test_quadratic_fit);
static bool test_harmonic_fit(void)
{
float qf[3] = { 3., -1., 0.4 };
float angles[10];
float val[10];
for (int i = 0; i < 10; i++) {
angles[i] = 2. * M_PI * i / 10.;
val[i] = harmonic(qf, angles[i]);
}
float qf2[3];
fit_harmonic(qf2, 10, angles, val);
float d = powf(qf2[0] - qf[0], 2.)
+ powf(qf2[1] - qf[1], 2.)
+ powf(qf2[2] - qf[2], 2.);
return (d < 1.E-12);
}
UT_REGISTER_TEST(test_harmonic_fit);
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