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