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/*
* Exercise the Fortran conversion option.
*/
#include <cstdlib>
#include <iostream>
#include <vector>
#include "fast_float/fast_float.h"
int main_readme() {
std::string const input = "1d+4";
double result;
fast_float::parse_options options{
fast_float::chars_format::fortran |
fast_float::chars_format::allow_leading_plus};
auto answer = fast_float::from_chars_advanced(
input.data(), input.data() + input.size(), result, options);
if ((answer.ec != std::errc()) || ((result != 10000))) {
std::cerr << "parsing failure\n" << result << "\n";
return EXIT_FAILURE;
}
std::cout << "parsed the number " << result << std::endl;
return EXIT_SUCCESS;
}
int main() {
std::vector<double> const expected{10000, 1000, 100, 10, 1,
.1, .01, .001, .0001};
std::vector<std::string> const fmt1{"1+4", "1+3", "1+2", "1+1", "1+0",
"1-1", "1-2", "1-3", "1-4"};
std::vector<std::string> const fmt2{"1d+4", "1d+3", "1d+2", "1d+1", "1d+0",
"1d-1", "1d-2", "1d-3", "1d-4"};
std::vector<std::string> const fmt3{"+1+4", "+1+3", "+1+2", "+1+1", "+1+0",
"+1-1", "+1-2", "+1-3", "+1-4"};
fast_float::parse_options const options{
fast_float::chars_format::fortran |
fast_float::chars_format::allow_leading_plus};
for (auto const &f : fmt1) {
auto d{std::distance(&fmt1[0], &f)};
double result;
auto answer{fast_float::from_chars_advanced(f.data(), f.data() + f.size(),
result, options)};
if (answer.ec != std::errc() || result != expected[std::size_t(d)]) {
std::cerr << "parsing failure on " << f << std::endl;
return EXIT_FAILURE;
}
}
for (auto const &f : fmt2) {
auto d{std::distance(&fmt2[0], &f)};
double result;
auto answer{fast_float::from_chars_advanced(f.data(), f.data() + f.size(),
result, options)};
if (answer.ec != std::errc() || result != expected[std::size_t(d)]) {
std::cerr << "parsing failure on " << f << std::endl;
return EXIT_FAILURE;
}
}
for (auto const &f : fmt3) {
auto d{std::distance(&fmt3[0], &f)};
double result;
auto answer{fast_float::from_chars_advanced(f.data(), f.data() + f.size(),
result, options)};
if (answer.ec != std::errc() || result != expected[std::size_t(d)]) {
std::cerr << "parsing failure on " << f << std::endl;
return EXIT_FAILURE;
}
}
if (main_readme() != EXIT_SUCCESS) {
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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