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Fix signed integer overflow on x = 0, detected by GCC sanitizer

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This commit is contained in:
Yuriy Skalko 2020-11-26 23:01:18 +02:00
parent 8793c2eed9
commit fdefff1108
1 changed files with 2 additions and 2 deletions
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4
src/support/lstrings.cpp
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@ -1446,8 +1446,8 @@ std::string formatFPNumber(double x)
os << std::fixed;
// Prevent outputs of 23.4200000000000017 but output small numbers
// with at least 6 significant digits.
double const logarithm = log10(fabs(x));
os << std::setprecision(max(6 - iround(logarithm), 0)) << x;
int const precision = (x == 0.0) ? 0 : max(6 - iround(log10(fabs(x))), 0);
os << std::setprecision(precision) << x;
string result = os.str();
if (result.find('.') != string::npos) {
result = rtrim(result, "0");