mapnik/benchmark/test_to_string2.cpp

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#include "bench_framework.hpp"
#include <sstream>
class test : public benchmark::test_case
{
double value_;
public:
test(mapnik::parameters const& params)
: test_case(params),
value_(-0.1234) {}
bool validate() const
{
std::ostringstream s;
s << value_;
return (s.str() == "-0.1234");
}
void operator()() const
{
std::string out;
for (std::size_t i=0;i<iterations_;++i) {
std::ostringstream s;
s << value_;
out = s.str();
}
}
};
BENCHMARK(test,"std::ostringstream double->string")