| /* |
| * 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(); |
| } |