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fixed GH #1128: Poco::NumberFormatter::format(float, precision) rounding changed

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This commit is contained in:
Guenter Obiltschnig
2016-02-28 13:32:54 +01:00
parent 2c6a74c4f5
commit 4e85aa4df2
6 changed files with 178 additions and 24 deletions
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50
Foundation/include/Poco/NumberFormatter.h
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@@ -208,6 +208,15 @@ public:
/// Formats a float value in decimal floating-point notation,
/// according to std::printf's %g format with a precision of 8 fractional digits.
static std::string format(float value, int precision);
/// Formats a double value in decimal floating-point notation,
/// according to std::printf's %f format with the given precision.
static std::string format(float value, int width, int precision);
/// Formats a double value in decimal floating-point notation,
/// right justified in a field of the specified width,
/// with the number of fractional digits given in precision.
static std::string format(double value);
/// Formats a double value in decimal floating-point notation,
/// according to std::printf's %g format with a precision of 16 fractional digits.
@@ -368,6 +377,15 @@ public:
/// Formats a float value in decimal floating-point notation,
/// according to std::printf's %g format with a precision of 8 fractional digits.
static void append(std::string& str, float value, int precision);
/// Formats a double value in decimal floating-point notation,
/// according to std::printf's %f format with the given precision.
static void append(std::string& str, float value, int width, int precision);
/// Formats a double value in decimal floating-point notation,
/// right justified in a field of the specified width,
/// with the number of fractional digits given in precision.
static void append(std::string& str, double value);
/// Formats a double value in decimal floating-point notation,
/// according to std::printf's %g format with a precision of 16 fractional digits.
@@ -641,33 +659,49 @@ inline std::string NumberFormatter::formatHex(UInt64 value, int width, bool pref
inline std::string NumberFormatter::format(float value)
{
char buffer[POCO_MAX_FLT_STRING_LEN];
floatToStr(buffer, POCO_MAX_FLT_STRING_LEN, value);
return std::string(buffer);
}
inline std::string NumberFormatter::format(float value, int precision)
{
char buffer[POCO_MAX_FLT_STRING_LEN];
floatToFixedStr(buffer, POCO_MAX_FLT_STRING_LEN, value, precision);
return std::string(buffer);
}
inline std::string NumberFormatter::format(float value, int width, int precision)
{
std::string result;
floatToStr(result, value);
floatToFixedStr(result, value, precision, width);
return result;
}
inline std::string NumberFormatter::format(double value)
{
std::string result;
doubleToStr(result, value);
return result;
char buffer[POCO_MAX_FLT_STRING_LEN];
doubleToStr(buffer, POCO_MAX_FLT_STRING_LEN, value);
return std::string(buffer);
}
inline std::string NumberFormatter::format(double value, int precision)
{
std::string result;
doubleToStr(result, value, precision);
return result;
char buffer[POCO_MAX_FLT_STRING_LEN];
doubleToFixedStr(buffer, POCO_MAX_FLT_STRING_LEN, value, precision);
return std::string(buffer);
}
inline std::string NumberFormatter::format(double value, int width, int precision)
{
std::string result;
doubleToStr(result, value, precision, width);
doubleToFixedStr(result, value, precision, width);
return result;
}