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Diffstat (limited to 'tests/test.c')
| -rw-r--r-- | tests/test.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/tests/test.c b/tests/test.c new file mode 100644 index 0000000..9559095 --- /dev/null +++ b/tests/test.c @@ -0,0 +1,192 @@ +/* + + This file is part of FFTS. + + Copyright (c) 2012, Anthony M. Blake + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of the organization nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL ANTHONY M. BLAKE BE LIABLE FOR ANY + DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +*/ + +#include "../include/ffts.h" +#include "../src/ffts_attributes.h" + +#ifdef __ARM_NEON__ +#endif + +#ifdef HAVE_SSE +#include <xmmintrin.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> + +#ifndef M_PI +#define M_PI 3.1415926535897932384626433832795028841971693993751058209 +#endif + +static float impulse_error(int N, int sign, float *data) +{ +#ifdef __ANDROID__ + double delta_sum = 0.0f; + double sum = 0.0f; +#else + long double delta_sum = 0.0f; + long double sum = 0.0f; +#endif + int i; + + for (i = 0; i < N; i++) { +#ifdef __ANDROID__ + double re, im; + + if (sign < 0) { + re = cos(2 * M_PI * (double) i / (double) N); + im = -sin(2 * M_PI * (double) i / (double) N); + } else { + re = cos(2 * M_PI * (double) i / (double) N); + im = sin(2 * M_PI * (double) i / (double) N); + } +#else + long double re, im; + + if (sign < 0) { + re = cosl(2 * M_PI * (long double) i / (long double) N); + im = -sinl(2 * M_PI * (long double) i / (long double) N); + } else { + re = cosl(2 * M_PI * (long double) i / (long double) N); + im = sinl(2 * M_PI * (long double) i / (long double) N); + } +#endif + + sum += re * re + im * im; + + re = re - data[2*i]; + im = im - data[2*i+1]; + + delta_sum += re * re + im * im; + } + +#ifdef __ANDROID__ + return (float) (sqrt(delta_sum) / sqrt(sum)); +#else + return (float) (sqrtl(delta_sum) / sqrtl(sum)); +#endif +} + +int test_transform(int n, int sign) +{ + ffts_plan_t *p; + +#ifdef HAVE_SSE + float FFTS_ALIGN(32) *input = _mm_malloc(2 * n * sizeof(float), 32); + float FFTS_ALIGN(32) *output = _mm_malloc(2 * n * sizeof(float), 32); +#else + float FFTS_ALIGN(32) *input = valloc(2 * n * sizeof(float)); + float FFTS_ALIGN(32) *output = valloc(2 * n * sizeof(float)); +#endif + int i; + + for (i = 0; i < n; i++) { + input[2*i + 0] = 0.0f; + input[2*i + 1] = 0.0f; + } + + input[2] = 1.0f; + + p = ffts_init_1d(i, sign); + if (!p) { + printf("Plan unsupported\n"); + return 0; + } + + ffts_execute(p, input, output); + printf(" %3d | %9d | %10E\n", sign, n, impulse_error(n, sign, output)); + ffts_free(p); + return 1; +} + +int main(int argc, char *argv[]) +{ + if (argc == 3) { + ffts_plan_t *p; + int i; + + /* test specific transform with test pattern and display output */ + int n = atoi(argv[1]); + int sign = atoi(argv[2]); + +#ifdef HAVE_SSE + float FFTS_ALIGN(32) *input = _mm_malloc(2 * n * sizeof(float), 32); + float FFTS_ALIGN(32) *output = _mm_malloc(2 * n * sizeof(float), 32); +#else + float FFTS_ALIGN(32) *input = valloc(2 * n * sizeof(float)); + float FFTS_ALIGN(32) *output = valloc(2 * n * sizeof(float)); +#endif + + for (i = 0; i < n; i++) { + input[2*i + 0] = (float) i; + input[2*i + 1] = 0.0f; + } + + /* input[2] = 1.0f; */ + + p = ffts_init_1d(i, sign); + if (!p) { + printf("Plan unsupported\n"); + return 0; + } + + ffts_execute(p, input, output); + + for (i = 0; i < n; i++) + printf("%d %d %f %f\n", i, sign, output[2*i], output[2*i+1]); + ffts_free(p); + +#ifdef HAVE_NEON + _mm_free(input); + _mm_free(output); +#else + free(input); + free(output); +#endif + } else { + int n, power2; + + /* test various sizes and display error */ + printf(" Sign | Size | L2 Error\n"); + printf("------+-----------+-------------\n"); + + for (n = 1, power2 = 2; n <= 18; n++, power2 <<= 1) { + test_transform(power2, -1); + } + + for (n = 1, power2 = 2; n <= 18; n++, power2 <<= 1) { + test_transform(power2, 1); + } + } + + return 0; +}
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