1 #include <benchmark/benchmark.h> 2 3 #include <fxdiv.h> 4 fxdiv_quotient_uint32_t(benchmark::State & state)5static void fxdiv_quotient_uint32_t(benchmark::State& state) { 6 const fxdiv_divisor_uint32_t divisor = fxdiv_init_uint32_t(UINT32_C(65537)); 7 uint32_t x = 0; 8 while (state.KeepRunning()) { 9 uint32_t quotient = fxdiv_quotient_uint32_t(x++, divisor); 10 benchmark::DoNotOptimize(quotient); 11 } 12 } 13 BENCHMARK(fxdiv_quotient_uint32_t); 14 fxdiv_quotient_uint64_t(benchmark::State & state)15static void fxdiv_quotient_uint64_t(benchmark::State& state) { 16 const fxdiv_divisor_uint64_t divisor = fxdiv_init_uint64_t(UINT64_C(4294967311)); 17 uint64_t x = 0; 18 while (state.KeepRunning()) { 19 uint64_t quotient = fxdiv_quotient_uint64_t(x++, divisor); 20 benchmark::DoNotOptimize(quotient); 21 } 22 } 23 BENCHMARK(fxdiv_quotient_uint64_t); 24 native_quotient_uint32_t(benchmark::State & state)25static void native_quotient_uint32_t(benchmark::State& state) { 26 uint32_t divisor = UINT32_C(65537); 27 benchmark::DoNotOptimize(&divisor); 28 uint32_t x = UINT32_MAX; 29 while (state.KeepRunning()) { 30 uint32_t quotient = x-- / divisor; 31 benchmark::DoNotOptimize(quotient); 32 } 33 } 34 BENCHMARK(native_quotient_uint32_t); 35 native_quotient_uint64_t(benchmark::State & state)36static void native_quotient_uint64_t(benchmark::State& state) { 37 uint64_t divisor = UINT64_C(4294967311); 38 benchmark::DoNotOptimize(&divisor); 39 uint64_t x = UINT64_MAX; 40 while (state.KeepRunning()) { 41 const uint64_t quotient = x-- / divisor; 42 benchmark::DoNotOptimize(quotient); 43 } 44 } 45 BENCHMARK(native_quotient_uint64_t); 46 47 BENCHMARK_MAIN(); 48