48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
#include <benchmark/benchmark.h>
|
|
|
|
#include <fxdiv.h>
|
|
|
|
static void fxdiv_quotient_uint32_t(benchmark::State& state) {
|
|
const fxdiv_divisor_uint32_t divisor = fxdiv_init_uint32_t(UINT32_C(65537));
|
|
uint32_t x = 0;
|
|
while (state.KeepRunning()) {
|
|
uint32_t quotient = fxdiv_quotient_uint32_t(x++, divisor);
|
|
benchmark::DoNotOptimize(quotient);
|
|
}
|
|
}
|
|
BENCHMARK(fxdiv_quotient_uint32_t);
|
|
|
|
static void fxdiv_quotient_uint64_t(benchmark::State& state) {
|
|
const fxdiv_divisor_uint64_t divisor = fxdiv_init_uint64_t(UINT64_C(4294967311));
|
|
uint64_t x = 0;
|
|
while (state.KeepRunning()) {
|
|
uint64_t quotient = fxdiv_quotient_uint64_t(x++, divisor);
|
|
benchmark::DoNotOptimize(quotient);
|
|
}
|
|
}
|
|
BENCHMARK(fxdiv_quotient_uint64_t);
|
|
|
|
static void native_quotient_uint32_t(benchmark::State& state) {
|
|
uint32_t divisor = UINT32_C(65537);
|
|
benchmark::DoNotOptimize(&divisor);
|
|
uint32_t x = UINT32_MAX;
|
|
while (state.KeepRunning()) {
|
|
uint32_t quotient = x-- / divisor;
|
|
benchmark::DoNotOptimize(quotient);
|
|
}
|
|
}
|
|
BENCHMARK(native_quotient_uint32_t);
|
|
|
|
static void native_quotient_uint64_t(benchmark::State& state) {
|
|
uint64_t divisor = UINT64_C(4294967311);
|
|
benchmark::DoNotOptimize(&divisor);
|
|
uint64_t x = UINT64_MAX;
|
|
while (state.KeepRunning()) {
|
|
const uint64_t quotient = x-- / divisor;
|
|
benchmark::DoNotOptimize(quotient);
|
|
}
|
|
}
|
|
BENCHMARK(native_quotient_uint64_t);
|
|
|
|
BENCHMARK_MAIN();
|