forked from OSchip/llvm-project
39 lines
935 B
C++
39 lines
935 B
C++
|
#include "benchmark/benchmark_api.h"
|
||
|
|
|
||
|
|
#include <sstream>
|
||
|
|
double __attribute__((noinline)) istream_numbers();
|
||
|
|
|
||
|
|
double istream_numbers() {
|
||
|
|
const char *a[] = {
|
||
|
|
"-6 69 -71 2.4882e-02 -100 101 -2.00005 5000000 -50000000",
|
||
|
|
"-25 71 7 -9.3262e+01 -100 101 -2.00005 5000000 -50000000",
|
||
|
|
"-14 53 46 -6.7026e-02 -100 101 -2.00005 5000000 -50000000"
|
||
|
|
};
|
||
|
|
|
||
|
|
int a1, a2, a3, a4, a5, a6, a7;
|
||
|
|
double f1 = 0.0, f2 = 0.0, q = 0.0;
|
||
|
|
for (int i=0; i < 3; i++) {
|
||
|
|
std::istringstream s(a[i]);
|
||
|
|
s >> a1
|
||
|
|
>> a2
|
||
|
|
>> a3
|
||
|
|
>> f1
|
||
|
|
>> a4
|
||
|
|
>> a5
|
||
|
|
>> f2
|
||
|
|
>> a6
|
||
|
|
>> a7;
|
||
|
|
q += (a1 + a2 + a3 + a4 + a5 + a6 + a7 + f1 + f2)/1000000;
|
||
|
|
}
|
||
|
|
return q;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void BM_Istream_numbers(benchmark::State &state) {
|
||
|
|
double i = 0;
|
||
|
|
while (state.KeepRunning())
|
||
|
|
benchmark::DoNotOptimize(i += istream_numbers());
|
||
|
|
}
|
||
|
|
|
||
|
|
BENCHMARK(BM_Istream_numbers)->RangeMultiplier(2)->Range(1024, 4096);
|
||
|
|
BENCHMARK_MAIN()
|