llvm-capstone/libcxx/benchmarks/stringstream.bench.cpp
Louis Dionne 5aa03b648b [libc++][NFC] Apply clang-format on large parts of the code base
This commit does a pass of clang-format over files in libc++ that
don't require major changes to conform to our style guide, or for
which we're not overly concerned about conflicting with in-flight
patches or hindering the git blame.

This roughly covers:
- benchmarks
- range algorithms
- concepts
- type traits

I did a manual verification of all the changes, and in particular I
applied clang-format on/off annotations in a few places where the
result was less readable after than before. This was not necessary
in a lot of places, however I did find that clang-format had pretty
bad taste when it comes to formatting concepts.

Differential Revision: https://reviews.llvm.org/D153140
2023-06-19 11:19:51 -04:00

31 lines
928 B
C++

#include "benchmark/benchmark.h"
#include "test_macros.h"
#include <sstream>
TEST_NOINLINE double 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();