organicmaps/fast_double_parser
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Fix for issue 23.

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This commit is contained in:
Daniel Lemire 2020-09-07 10:49:53 -04:00
parent aae457d607
commit 04437c1736
2 changed files with 13 additions and 3 deletions
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5
include/fast_double_parser.h
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@ -1140,12 +1140,11 @@ really_inline bool parse_number_base(const char *p, double *outDouble) {
++p;
}
while (is_integer(*p)) {
if (exp_number > 0x100000000) { // we need to check for overflows
if (exp_number < 0x100000000) { // we need to check for overflows
// we refuse to parse this
return false;
exp_number = 10 * exp_number + digit;
}
digit = *p - '0';
exp_number = 10 * exp_number + digit;
++p;
}
exponent += (neg_exp ? -exp_number : exp_number);

11
tests/unit.cpp
View file

@ -237,6 +237,16 @@ void issue13() {
std::cout << "zero maps to zero" << std::endl;
}
void issue23() {
std::string a = "0e+42949672970";
double x;
bool ok = fast_double_parser::parse_number(a.c_str(), &x);
if(!ok) throw std::runtime_error("could not parse zero.");
if(x != 0) throw std::runtime_error("zero does not map to zero.");
std::cout << "zero maps to zero" << std::endl;
}
int main() {
const int evl_method = FLT_EVAL_METHOD;
printf("FLT_EVAL_METHOD = %d\n", evl_method);
@ -244,6 +254,7 @@ int main() {
if(!is_pow_correct) {
printf("It appears that your system has a bad pow function.\n");
}
issue23();
issue13();
unit_tests();