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/*******************************************************************************
* librepfunc - a collection of common functions, classes and tools.
* See the README file for copyright information and how to reach the author.
******************************************************************************/
#include <string> // std::string
#include <vector> // std::vector
#include <iostream> // std::cout
#include <chrono>
#include <repfunc.h> // include this library
int main() {
std::vector<std::string> tests = {
"3",
"-3",
" 3",
" -3",
" 34",
" 34.3",
" 34,3",
" -34",
" -34.3",
" -34,3",
" 34e12",
" 34.3e12",
" 34,3e12",
" 34E12",
" 34.3E12",
" 34,3E12",
" -34e12",
" -34.3e12",
" -34,3e12",
" -34E12",
" -34.3E12",
" -34,3E12",
" 34e-12",
" 34.3e-12",
" 34,3e-12",
" 34E-12",
" 34.3E-12",
" 34,3E-12",
" -34e-12",
" -34.3e-12",
" -34,3e-12",
" -34E-12",
" -34.3E-12",
" -34,3E-12",
"12abc",
" 0x1.fp3", // 1 15/16 * 2^3 == 1.9375 * 8 == 1.55e1
};
std::cout << "This example shows the different behaviour of \n"
<< "StrToFloat vs std::stod - compare the results." << std::endl;
using std::chrono::duration_cast;
using std::chrono::duration;
using std::chrono::milliseconds;
std::chrono::time_point<std::chrono::high_resolution_clock> t1,t2,t3,t4;
duration<double, std::milli> msecs1, msecs2;
size_t p;
t1 = std::chrono::high_resolution_clock::now();
for(auto s:tests) {
std::cout << "StrToFloat('" << s << "', &p) = (" << StrToFloat(s, &p) << "," << (int)p << ")" << std::endl;
}
t2 = std::chrono::high_resolution_clock::now();
t3 = std::chrono::high_resolution_clock::now();
for(auto s:tests) {
std::cout << "std::stod ('" << s << "', &p) = (" << std::stod(s, &p) << "," << (int)p << ")" << std::endl;
}
t4 = std::chrono::high_resolution_clock::now();
msecs1 = t2 - t1;
msecs2 = t4 - t3;
std::cout << "StrToFloat took " << msecs1.count() << "msec" << std::endl;
std::cout << "std::stod took " << msecs2.count() << "msec" << std::endl;
return 0;
}
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