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Fix formatFPnumber with negative doubles.

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This commit is contained in:
Juergen Spitzmueller 2015-06-26 15:49:44 +02:00
parent 2a8db0a64b
commit c9d9309c1e
1 changed files with 7 additions and 0 deletions
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7
src/support/lstrings.cpp
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@ -1407,6 +1407,10 @@ std::string formatFPNumber(double x)
os << std::fixed;
// Prevent outputs of 23.4200000000000017 but output small numbers
// with at least 6 significant digits.
bool const neg = x < 0;
// Treat all doubles as positive for the formatting
if (neg)
x = -x;
double const logarithm = log10(x);
os << std::setprecision(max(6 - static_cast<int>(round(logarithm)), 0)) << x;
string result = os.str();
@ -1415,6 +1419,9 @@ std::string formatFPNumber(double x)
if (result[result.length()-1] == '.')
result = rtrim(result, ".");
}
// Re-add negativity
if (neg)
result = "-" + result;
return result;
}