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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <fenv.h>
#include <math.h>
#include <benchmark/Benchmark.h>
#define AT_COMMON_VALS \
Arg(1234.0)->Arg(nan(""))->Arg(HUGE_VAL)->Arg(0.0)
// Avoid optimization.
volatile double d;
volatile double v;
BENCHMARK_NO_ARG(BM_math_sqrt);
void BM_math_sqrt::Run(int iters) {
StartBenchmarkTiming();
d = 0.0;
v = 2.0;
for (int i = 0; i < iters; ++i) {
d += sqrt(v);
}
StopBenchmarkTiming();
}
BENCHMARK_NO_ARG(BM_math_log10);
void BM_math_log10::Run(int iters) {
StartBenchmarkTiming();
d = 0.0;
v = 1234.0;
for (int i = 0; i < iters; ++i) {
d += log10(v);
}
StopBenchmarkTiming();
}
BENCHMARK_NO_ARG(BM_math_logb);
void BM_math_logb::Run(int iters) {
StartBenchmarkTiming();
d = 0.0;
v = 1234.0;
for (int i = 0; i < iters; ++i) {
d += logb(v);
}
StopBenchmarkTiming();
}
BENCHMARK_WITH_ARG(BM_math_isinf, double)->AT_COMMON_VALS;
void BM_math_isinf::Run(int iters, double value) {
StartBenchmarkTiming();
d = 0.0;
v = value;
for (int i = 0; i < iters; ++i) {
d += (isinf)(v);
}
StopBenchmarkTiming();
}
BENCHMARK_NO_ARG(BM_math_sin_fast);
void BM_math_sin_fast::Run(int iters) {
StartBenchmarkTiming();
d = 1.0;
for (int i = 0; i < iters; ++i) {
d += sin(d);
}
StopBenchmarkTiming();
}
BENCHMARK_NO_ARG(BM_math_sin_feupdateenv);
void BM_math_sin_feupdateenv::Run(int iters) {
StartBenchmarkTiming();
d = 1.0;
for (int i = 0; i < iters; ++i) {
fenv_t __libc_save_rm;
feholdexcept(&__libc_save_rm);
fesetround(FE_TONEAREST);
d += sin(d);
feupdateenv(&__libc_save_rm);
}
StopBenchmarkTiming();
}
BENCHMARK_NO_ARG(BM_math_sin_fesetenv);
void BM_math_sin_fesetenv::Run(int iters) {
StartBenchmarkTiming();
d = 1.0;
for (int i = 0; i < iters; ++i) {
fenv_t __libc_save_rm;
feholdexcept(&__libc_save_rm);
fesetround(FE_TONEAREST);
d += sin(d);
fesetenv(&__libc_save_rm);
}
StopBenchmarkTiming();
}
BENCHMARK_WITH_ARG(BM_math_fpclassify, double)->AT_COMMON_VALS;
void BM_math_fpclassify::Run(int iters, double value) {
StartBenchmarkTiming();
d = 0.0;
v = value;
for (int i = 0; i < iters; ++i) {
d += fpclassify(v);
}
StopBenchmarkTiming();
}
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