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address the double to json accounting for large double (thousands, millions, billions) and avoid "negative mantissa length"

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This commit is contained in:
Stefano Fiorentino 2016-02-12 11:45:56 +01:00
parent a89dec25ad
commit 2f8b38266c
1 changed files with 8 additions and 1 deletions
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7
src/lib_json/json_writer.cpp
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@ -145,7 +145,14 @@ std::string valueToString(double value, bool useSpecialFloats, unsigned int prec
if (length<1) length=1; if (length<1) length=1;
char formatString[6]; char formatString[6];
if (length<precision)
{
sprintf(formatString, "%%.%dg", precision-length); sprintf(formatString, "%%.%dg", precision-length);
}
else
{
sprintf(formatString, "%%g");
}
// Print into the buffer. We need not request the alternative representation // Print into the buffer. We need not request the alternative representation
// that always has a decimal point because JSON doesn't distingish the // that always has a decimal point because JSON doesn't distingish the