#include "fast_float/fast_float.h" #include #include int main() { std::string input = "3.1416 xyz "; double result; if(auto answer = fast_float::from_chars(input.data(), input.data() + input.size(), result)) { std::cout << "parsed the number " << result << std::endl; return EXIT_SUCCESS; } std::cerr << "failed to parse " << result << std::endl; return EXIT_FAILURE; }