organicmaps/fast_double_parser
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Minor patch to backup stringstream approach.

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This commit is contained in:
Daniel Lemire 2020-12-22 14:39:03 -05:00
parent c607ead369
commit 4bdc4dbd7c
2 changed files with 14 additions and 4 deletions
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5
include/fast_double_parser.h
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@ -10,7 +10,6 @@
#include <cstdlib>
#include <cstring>
#include <locale.h>
#if (defined(sun) || defined(__sun))
#define FAST_DOUBLE_PARSER_SOLARIS
#endif
@ -36,7 +35,9 @@ static inline double cygwin_strtod_l(const char* start, char** end) {
ss.imbue(std::locale::classic());
ss << start;
ss >> d;
size_t nread = ss.tellg();
if(ss.fail()) { *end = nullptr; }
if(ss.eof()) { ss.clear(); }
auto nread = ss.tellg();
*end = const_cast<char*>(start) + nread;
return d;
}

13
tests/unit.cpp
View file

@ -75,7 +75,11 @@ void check_string(std::string s) {
printf("fast_double_parser refused to parse %s\n", s.c_str());
throw std::runtime_error("fast_double_parser refused to parse");
}
#ifdef _WIN32
#if defined(FAST_DOUBLE_PARSER_SOLARIS) || defined(FAST_DOUBLE_PARSER_CYGWIN)
// workround for cygwin, solaris
char *endptr;
double d = cygwin_strtod_l(s.data(), &endptr);
#elif defined(_WIN32)
static _locale_t c_locale = _create_locale(LC_ALL, "C");
double d = _strtod_l(s.data(), nullptr, c_locale);
#else
@ -253,7 +257,11 @@ bool basic_test_64bit(std::string vals, double val) {
std::cerr << " I could not parse " << vals << std::endl;
return false;
}
if(ok != vals.c_str() + vals.size()) throw std::runtime_error("does not point at the end.");
if(ok != vals.c_str() + vals.size()) {
std::cout << "gap is " << (ok - vals.c_str()) << std::endl;
throw std::runtime_error("does not point at the end.");
}
if (std::isnan(val)) {
if (!std::isnan(result_value)) {
std::cerr << "not nan" << result_value << std::endl;
@ -271,6 +279,7 @@ bool basic_test_64bit(std::string vals, double val) {
return true;
}
int main() {
const int evl_method = FLT_EVAL_METHOD;
printf("FLT_EVAL_METHOD = %d\n", evl_method);