48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
#include <benchmark/benchmark.h>
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#include <fxdiv.h>
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static void fxdiv_mulext_uint32_t(benchmark::State& state) {
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uint32_t c = UINT32_C(0x1971DB6B);
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benchmark::DoNotOptimize(&c);
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uint32_t d = c;
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while (state.KeepRunning()) {
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const uint64_t product = fxdiv_mulext_uint32_t(c, d++);
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benchmark::DoNotOptimize(product);
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}
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}
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BENCHMARK(fxdiv_mulext_uint32_t);
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static void native_mulext_uint32_t(benchmark::State& state) {
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uint32_t c = UINT32_C(0x1971DB6B);
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benchmark::DoNotOptimize(&c);
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uint32_t d = c;
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while (state.KeepRunning()) {
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const uint64_t product = (uint64_t) c * (uint64_t) (d++);
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benchmark::DoNotOptimize(product);
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}
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}
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BENCHMARK(native_mulext_uint32_t);
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static void fxdiv_mulhi_uint32_t(benchmark::State& state) {
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const uint32_t c = UINT32_C(0x1971DB6B);
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uint32_t x = c;
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while (state.KeepRunning()) {
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const uint32_t product = fxdiv_mulhi_uint32_t(c, x++);
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benchmark::DoNotOptimize(product);
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}
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}
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BENCHMARK(fxdiv_mulhi_uint32_t);
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static void fxdiv_mulhi_uint64_t(benchmark::State& state) {
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const uint64_t c = UINT64_C(0x425E892B38148FAD);
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uint64_t x = c;
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while (state.KeepRunning()) {
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const uint64_t product = fxdiv_mulhi_uint64_t(c, x++);
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benchmark::DoNotOptimize(product);
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}
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}
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BENCHMARK(fxdiv_mulhi_uint64_t);
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BENCHMARK_MAIN();
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