106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/****************************************************************************
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** gmio
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** Copyright Fougue (2 Mar. 2015)
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** contact@fougue.pro
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**
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** This software is a reusable library whose purpose is to provide complete
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** I/O support for various CAD file formats (eg. STL)
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**
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** This software is governed by the CeCILL-B license under French law and
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** abiding by the rules of distribution of free software. You can use,
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** modify and/ or redistribute the software under the terms of the CeCILL-B
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** license as circulated by CEA, CNRS and INRIA at the following URL
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** "http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html".
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****************************************************************************/
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#include "utest_assert.h"
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#include "../benchmarks/commons/benchmark_tools.h"
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#include "../src/gmio_core/internal/c99_stdio_compat.h"
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#include "../src/gmio_core/internal/fast_atof.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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static float __tc__float_array[1024] = {0};
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static void __tc__fill_float_array()
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{
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const float fmax = 1e6;
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size_t i;
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srand((unsigned)time(NULL));
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for (i = 0; i < GMIO_ARRAY_SIZE(__tc__float_array); ++i) {
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const double dsign = (i % 2) == 0 ? 1. : -1.;
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const double drand = (double)rand();
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const double drand_max = (double)RAND_MAX;
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const double dmax = (double)fmax;
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__tc__float_array[i] = (float)(dsign * (drand / drand_max) * dmax);
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}
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}
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static void __tc__run_atof(float (*func_atof)(const char*))
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{
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char strbuff[512] = {0};
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size_t iter;
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for (iter = 0; iter < 250; ++iter) {
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size_t i;
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for (i = 0; i < GMIO_ARRAY_SIZE(__tc__float_array); ++i) {
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const float f = __tc__float_array[i];
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float fres = 0.f;
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gmio_snprintf(strbuff, sizeof(strbuff), "%f", f);
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fres = func_atof(strbuff);
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gmio_snprintf(strbuff, sizeof(strbuff), "%E", f);
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fres = func_atof(strbuff);
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}
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}
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}
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static float __tc__float_strtod(const char* str)
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{
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return (float)strtod(str, NULL);
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}
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static void __tc__benchmark_fast_atof(const void* arg)
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{
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GMIO_UNUSED(arg);
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__tc__run_atof(&fast_atof);
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}
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static void __tc__benchmark_strtod(const void* arg)
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{
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GMIO_UNUSED(arg);
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__tc__run_atof(&__tc__float_strtod);
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}
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static const char* test_internal__benchmark_gmio_fast_atof()
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{
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struct benchmark_cmp_arg bmk_arg[] = {
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{ "str->float",
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&__tc__benchmark_fast_atof, NULL,
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&__tc__benchmark_strtod, NULL },
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{0}
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};
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struct benchmark_cmp_result bmk_res[] = { {0}, {0} };
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const struct benchmark_cmp_result_header header = { "fast_atof", "strtod" };
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struct benchmark_cmp_result_array bmk_res_array = {0};
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__tc__fill_float_array();
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benchmark_cmp_batch(2, bmk_arg, bmk_res, NULL, NULL);
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bmk_res_array.ptr = bmk_res;
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bmk_res_array.count = GMIO_ARRAY_SIZE(bmk_res) - 1;
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puts("\n");
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benchmark_print_results(
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BENCHMARK_PRINT_FORMAT_MARKDOWN,
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header,
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bmk_res_array);
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#ifndef GMIO_DEBUG_BUILD /* Check only for release builds */
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UTEST_ASSERT((1.05*bmk_res[0].func1_exec_time_ms) < bmk_res[0].func2_exec_time_ms);
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#endif
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return NULL;
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}
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