ClickHouse/base/poco/Foundation/include/Poco/NumberFormatter.h

//
// NumberFormatter.h
//
// Library: Foundation
// Package: Core
// Module:  NumberFormatter
//
// Definition of the NumberFormatter class.
//
// Copyright (c) 2004-2008, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier:	BSL-1.0
//


#ifndef Foundation_NumberFormatter_INCLUDED
#define Foundation_NumberFormatter_INCLUDED


#include "Poco/Foundation.h"
#include "Poco/NumericString.h"


namespace Poco
{


class Foundation_API NumberFormatter
/// The NumberFormatter class provides static methods
/// for formatting numeric values into strings.
///
/// There are two kind of static member functions:
///    * format* functions return a std::string containing
///      the formatted value.
///    * append* functions append the formatted value to
///      an existing string.
{
public:
    enum BoolFormat
    {
        FMT_TRUE_FALSE,
        FMT_YES_NO,
        FMT_ON_OFF
    };

    static const unsigned NF_MAX_INT_STRING_LEN = 32; // increase for 64-bit binary formatting support
    static const unsigned NF_MAX_FLT_STRING_LEN = POCO_MAX_FLT_STRING_LEN;

    static std::string format(int value);
    /// Formats an integer value in decimal notation.

    static std::string format(int value, int width);
    /// Formats an integer value in decimal notation,
    /// right justified in a field having at least
    /// the specified width.

    static std::string format0(int value, int width);
    /// Formats an integer value in decimal notation,
    /// right justified and zero-padded in a field
    /// having at least the specified width.

    static std::string formatHex(int value, bool prefix = false);
    /// Formats an int value in hexadecimal notation.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.
    /// The value is treated as unsigned.

    static std::string formatHex(int value, int width, bool prefix = false);
    /// Formats a int value in hexadecimal notation,
    /// right justified and zero-padded in
    /// a field having at least the specified width.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.
    /// The value is treated as unsigned.

    static std::string format(unsigned value);
    /// Formats an unsigned int value in decimal notation.

    static std::string format(unsigned value, int width);
    /// Formats an unsigned long int in decimal notation,
    /// right justified in a field having at least the
    /// specified width.

    static std::string format0(unsigned int value, int width);
    /// Formats an unsigned int value in decimal notation,
    /// right justified and zero-padded in a field having at
    /// least the specified width.

    static std::string formatHex(unsigned value, bool prefix = false);
    /// Formats an unsigned int value in hexadecimal notation.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.

    static std::string formatHex(unsigned value, int width, bool prefix = false);
    /// Formats a int value in hexadecimal notation,
    /// right justified and zero-padded in
    /// a field having at least the specified width.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.

    static std::string format(long value);
    /// Formats a long value in decimal notation.

    static std::string format(long value, int width);
    /// Formats a long value in decimal notation,
    /// right justified in a field having at least the
    /// specified width.

    static std::string format0(long value, int width);
    /// Formats a long value in decimal notation,
    /// right justified and zero-padded in a field
    /// having at least the specified width.

    static std::string formatHex(long value, bool prefix = false);
    /// Formats an unsigned long value in hexadecimal notation.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.
    /// The value is treated as unsigned.

    static std::string formatHex(long value, int width, bool prefix = false);
    /// Formats an unsigned long value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least the
    /// specified width.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.
    /// The value is treated as unsigned.

    static std::string format(unsigned long value);
    /// Formats an unsigned long value in decimal notation.

    static std::string format(unsigned long value, int width);
    /// Formats an unsigned long value in decimal notation,
    /// right justified in a field having at least the specified
    /// width.

    static std::string format0(unsigned long value, int width);
    /// Formats an unsigned long value in decimal notation,
    /// right justified and zero-padded
    /// in a field having at least the specified width.

    static std::string formatHex(unsigned long value, bool prefix = false);
    /// Formats an unsigned long value in hexadecimal notation.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.

    static std::string formatHex(unsigned long value, int width, bool prefix = false);
    /// Formats an unsigned long value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least the
    /// specified width.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.


#    ifdef POCO_LONG_IS_64_BIT

    static std::string format(long long value);
    /// Formats a 64-bit integer value in decimal notation.

    static std::string format(long long value, int width);
    /// Formats a 64-bit integer value in decimal notation,
    /// right justified in a field having at least the specified width.

    static std::string format0(long long value, int width);
    /// Formats a 64-bit integer value in decimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.

    static std::string formatHex(long long value, bool prefix = false);
    /// Formats a 64-bit integer value in hexadecimal notation.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.
    /// The value is treated as unsigned.

    static std::string formatHex(long long value, int width, bool prefix = false);
    /// Formats a 64-bit integer value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.
    /// The value is treated as unsigned.
    /// If prefix is true, "0x" prefix is prepended to the resulting string.

    static std::string format(unsigned long long value);
    /// Formats an unsigned 64-bit integer value in decimal notation.

    static std::string format(unsigned long long value, int width);
    /// Formats an unsigned 64-bit integer value in decimal notation,
    /// right justified in a field having at least the specified width.

    static std::string format0(unsigned long long value, int width);
    /// Formats an unsigned 64-bit integer value in decimal notation,
    /// right justified and zero-padded in a field having at least the
    /// specified width.

    static std::string formatHex(unsigned long long value, bool prefix = false);
    /// Formats a 64-bit integer value in hexadecimal notation.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.

    static std::string formatHex(unsigned long long value, int width, bool prefix = false);
    /// Formats a 64-bit integer value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width. If prefix is true, "0x" prefix is
    /// prepended to the resulting string.

#    else // ifndef POCO_LONG_IS_64_BIT

    static std::string format(Int64 value);
    /// Formats a 64-bit integer value in decimal notation.

    static std::string format(Int64 value, int width);
    /// Formats a 64-bit integer value in decimal notation,
    /// right justified in a field having at least the specified width.

    static std::string format0(Int64 value, int width);
    /// Formats a 64-bit integer value in decimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.

    static std::string formatHex(Int64 value, bool prefix = false);
    /// Formats a 64-bit integer value in hexadecimal notation.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.
    /// The value is treated as unsigned.

    static std::string formatHex(Int64 value, int width, bool prefix = false);
    /// Formats a 64-bit integer value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.
    /// The value is treated as unsigned.
    /// If prefix is true, "0x" prefix is prepended to the resulting string.

    static std::string format(UInt64 value);
    /// Formats an unsigned 64-bit integer value in decimal notation.

    static std::string format(UInt64 value, int width);
    /// Formats an unsigned 64-bit integer value in decimal notation,
    /// right justified in a field having at least the specified width.

    static std::string format0(UInt64 value, int width);
    /// Formats an unsigned 64-bit integer value in decimal notation,
    /// right justified and zero-padded in a field having at least the
    /// specified width.

    static std::string formatHex(UInt64 value, bool prefix = false);
    /// Formats a 64-bit integer value in hexadecimal notation.
    /// If prefix is true, "0x" prefix is prepended to the
    /// resulting string.

    static std::string formatHex(UInt64 value, int width, bool prefix = false);
    /// Formats a 64-bit integer value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width. If prefix is true, "0x" prefix is
    /// prepended to the resulting string.

#    endif // ifdef POCO_LONG_IS_64_BIT


    static std::string format(float value);
    /// 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.

    static std::string format(double 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(double 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(const void * ptr);
    /// Formats a pointer in an eight (32-bit architectures) or
    /// sixteen (64-bit architectures) characters wide
    /// field in hexadecimal notation.

    static std::string format(bool value, BoolFormat format = FMT_TRUE_FALSE);
    /// Formats a bool value in decimal/text notation,
    /// according to format parameter.

    static void append(std::string & str, int value);
    /// Formats an integer value in decimal notation.

    static void append(std::string & str, int value, int width);
    /// Formats an integer value in decimal notation,
    /// right justified in a field having at least
    /// the specified width.

    static void append0(std::string & str, int value, int width);
    /// Formats an integer value in decimal notation,
    /// right justified and zero-padded in a field
    /// having at least the specified width.

    static void appendHex(std::string & str, int value);
    /// Formats an int value in hexadecimal notation.
    /// The value is treated as unsigned.

    static void appendHex(std::string & str, int value, int width);
    /// Formats a int value in hexadecimal notation,
    /// right justified and zero-padded in
    /// a field having at least the specified width.
    /// The value is treated as unsigned.

    static void append(std::string & str, unsigned value);
    /// Formats an unsigned int value in decimal notation.

    static void append(std::string & str, unsigned value, int width);
    /// Formats an unsigned long int in decimal notation,
    /// right justified in a field having at least the
    /// specified width.

    static void append0(std::string & str, unsigned int value, int width);
    /// Formats an unsigned int value in decimal notation,
    /// right justified and zero-padded in a field having at
    /// least the specified width.

    static void appendHex(std::string & str, unsigned value);
    /// Formats an unsigned int value in hexadecimal notation.

    static void appendHex(std::string & str, unsigned value, int width);
    /// Formats a int value in hexadecimal notation,
    /// right justified and zero-padded in
    /// a field having at least the specified width.

    static void append(std::string & str, long value);
    /// Formats a long value in decimal notation.

    static void append(std::string & str, long value, int width);
    /// Formats a long value in decimal notation,
    /// right justified in a field having at least the
    /// specified width.

    static void append0(std::string & str, long value, int width);
    /// Formats a long value in decimal notation,
    /// right justified and zero-padded in a field
    /// having at least the specified width.

    static void appendHex(std::string & str, long value);
    /// Formats an unsigned long value in hexadecimal notation.
    /// The value is treated as unsigned.

    static void appendHex(std::string & str, long value, int width);
    /// Formats an unsigned long value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least the
    /// specified width.
    /// The value is treated as unsigned.

    static void append(std::string & str, unsigned long value);
    /// Formats an unsigned long value in decimal notation.

    static void append(std::string & str, unsigned long value, int width);
    /// Formats an unsigned long value in decimal notation,
    /// right justified in a field having at least the specified
    /// width.

    static void append0(std::string & str, unsigned long value, int width);
    /// Formats an unsigned long value in decimal notation,
    /// right justified and zero-padded
    /// in a field having at least the specified width.

    static void appendHex(std::string & str, unsigned long value);
    /// Formats an unsigned long value in hexadecimal notation.

    static void appendHex(std::string & str, unsigned long value, int width);
    /// Formats an unsigned long value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least the
    /// specified width.


#    ifdef POCO_LONG_IS_64_BIT

    static void append(std::string & str, long long value);
    /// Formats a 64-bit integer value in decimal notation.

    static void append(std::string & str, long long value, int width);
    /// Formats a 64-bit integer value in decimal notation,
    /// right justified in a field having at least the specified width.

    static void append0(std::string & str, long long value, int width);
    /// Formats a 64-bit integer value in decimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.

    static void appendHex(std::string & str, long long value);
    /// Formats a 64-bit integer value in hexadecimal notation.
    /// The value is treated as unsigned.

    static void appendHex(std::string & str, long long value, int width);
    /// Formats a 64-bit integer value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.
    /// The value is treated as unsigned.

    static void append(std::string & str, unsigned long long value);
    /// Formats an unsigned 64-bit integer value in decimal notation.

    static void append(std::string & str, unsigned long long value, int width);
    /// Formats an unsigned 64-bit integer value in decimal notation,
    /// right justified in a field having at least the specified width.

    static void append0(std::string & str, unsigned long long value, int width);
    /// Formats an unsigned 64-bit integer value in decimal notation,
    /// right justified and zero-padded in a field having at least the
    /// specified width.

    static void appendHex(std::string & str, unsigned long long value);
    /// Formats a 64-bit integer value in hexadecimal notation.

    static void appendHex(std::string & str, unsigned long long value, int width);
    /// Formats a 64-bit integer value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.

#    else // ifndef POCO_LONG_IS_64_BIT

    static void append(std::string & str, Int64 value);
    /// Formats a 64-bit integer value in decimal notation.

    static void append(std::string & str, Int64 value, int width);
    /// Formats a 64-bit integer value in decimal notation,
    /// right justified in a field having at least the specified width.

    static void append0(std::string & str, Int64 value, int width);
    /// Formats a 64-bit integer value in decimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.

    static void appendHex(std::string & str, Int64 value);
    /// Formats a 64-bit integer value in hexadecimal notation.
    /// The value is treated as unsigned.

    static void appendHex(std::string & str, Int64 value, int width);
    /// Formats a 64-bit integer value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.
    /// The value is treated as unsigned.

    static void append(std::string & str, UInt64 value);
    /// Formats an unsigned 64-bit integer value in decimal notation.

    static void append(std::string & str, UInt64 value, int width);
    /// Formats an unsigned 64-bit integer value in decimal notation,
    /// right justified in a field having at least the specified width.

    static void append0(std::string & str, UInt64 value, int width);
    /// Formats an unsigned 64-bit integer value in decimal notation,
    /// right justified and zero-padded in a field having at least the
    /// specified width.

    static void appendHex(std::string & str, UInt64 value);
    /// Formats a 64-bit integer value in hexadecimal notation.

    static void appendHex(std::string & str, UInt64 value, int width);
    /// Formats a 64-bit integer value in hexadecimal notation,
    /// right justified and zero-padded in a field having at least
    /// the specified width.

#    endif // ifdef POCO_LONG_IS_64_BIT


    static void append(std::string & str, float value);
    /// 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.

    static void append(std::string & str, double 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, double 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, const void * ptr);
    /// Formats a pointer in an eight (32-bit architectures) or
    /// sixteen (64-bit architectures) characters wide
    /// field in hexadecimal notation.

private:
};


//
// inlines
//

inline std::string NumberFormatter::format(int value)
{
    std::string result;
    intToStr(value, 10, result);
    return result;
}


inline std::string NumberFormatter::format(int value, int width)
{
    std::string result;
    intToStr(value, 10, result, false, width, ' ');
    return result;
}


inline std::string NumberFormatter::format0(int value, int width)
{
    std::string result;
    intToStr(value, 10, result, false, width, '0');
    return result;
}


inline std::string NumberFormatter::formatHex(int value, bool prefix)
{
    std::string result;
    uIntToStr(static_cast<unsigned int>(value), 0x10, result, prefix);
    return result;
}


inline std::string NumberFormatter::formatHex(int value, int width, bool prefix)
{
    std::string result;
    uIntToStr(static_cast<unsigned int>(value), 0x10, result, prefix, width, '0');
    return result;
}


inline std::string NumberFormatter::format(unsigned value)
{
    std::string result;
    uIntToStr(value, 10, result);
    return result;
}


inline std::string NumberFormatter::format(unsigned value, int width)
{
    std::string result;
    uIntToStr(value, 10, result, false, width, ' ');
    return result;
}


inline std::string NumberFormatter::format0(unsigned int value, int width)
{
    std::string result;
    uIntToStr(value, 10, result, false, width, '0');
    return result;
}


inline std::string NumberFormatter::formatHex(unsigned value, bool prefix)
{
    std::string result;
    uIntToStr(value, 0x10, result, prefix);
    return result;
}


inline std::string NumberFormatter::formatHex(unsigned value, int width, bool prefix)
{
    std::string result;
    uIntToStr(value, 0x10, result, prefix, width, '0');
    return result;
}


inline std::string NumberFormatter::format(long value)
{
    std::string result;
    intToStr(value, 10, result);
    return result;
}


inline std::string NumberFormatter::format(long value, int width)
{
    std::string result;
    intToStr(value, 10, result, false, width, ' ');
    return result;
}


inline std::string NumberFormatter::format0(long value, int width)
{
    std::string result;
    intToStr(value, 10, result, false, width, '0');
    return result;
}


inline std::string NumberFormatter::formatHex(long value, bool prefix)
{
    std::string result;
    uIntToStr(static_cast<unsigned long>(value), 0x10, result, prefix);
    return result;
}


inline std::string NumberFormatter::formatHex(long value, int width, bool prefix)
{
    std::string result;
    uIntToStr(static_cast<unsigned long>(value), 0x10, result, prefix, width, '0');
    return result;
}


inline std::string NumberFormatter::format(unsigned long value)
{
    std::string result;
    uIntToStr(value, 10, result);
    return result;
}


inline std::string NumberFormatter::format(unsigned long value, int width)
{
    std::string result;
    uIntToStr(value, 10, result, false, width, ' ');
    return result;
}


inline std::string NumberFormatter::format0(unsigned long value, int width)
{
    std::string result;
    uIntToStr(value, 10, result, false, width, '0');
    return result;
}


inline std::string NumberFormatter::formatHex(unsigned long value, bool prefix)
{
    std::string result;
    uIntToStr(value, 0x10, result, prefix);
    return result;
}


inline std::string NumberFormatter::formatHex(unsigned long value, int width, bool prefix)
{
    std::string result;
    uIntToStr(value, 0x10, result, prefix, width, '0');
    return result;
}



#    ifdef POCO_LONG_IS_64_BIT


inline std::string NumberFormatter::format(long long value)
{
    std::string result;
    intToStr(value, 10, result);
    return result;
}


inline std::string NumberFormatter::format(long long value, int width)
{
    std::string result;
    intToStr(value, 10, result, false, width, ' ');
    return result;
}


inline std::string NumberFormatter::format0(long long value, int width)
{
    std::string result;
    intToStr(value, 10, result, false, width, '0');
    return result;
}


inline std::string NumberFormatter::formatHex(long long value, bool prefix)
{
    std::string result;
    uIntToStr(static_cast<unsigned long long>(value), 0x10, result, prefix);
    return result;
}


inline std::string NumberFormatter::formatHex(long long value, int width, bool prefix)
{
    std::string result;
    uIntToStr(static_cast<unsigned long long>(value), 0x10, result, prefix, width, '0');
    return result;
}


inline std::string NumberFormatter::format(unsigned long long value)
{
    std::string result;
    uIntToStr(value, 10, result);
    return result;
}


inline std::string NumberFormatter::format(unsigned long long value, int width)
{
    std::string result;
    uIntToStr(value, 10, result, false, width, ' ');
    return result;
}


inline std::string NumberFormatter::format0(unsigned long long value, int width)
{
    std::string result;
    uIntToStr(value, 10, result, false, width, '0');
    return result;
}


inline std::string NumberFormatter::formatHex(unsigned long long value, bool prefix)
{
    std::string result;
    uIntToStr(value, 0x10, result, prefix);
    return result;
}


inline std::string NumberFormatter::formatHex(unsigned long long value, int width, bool prefix)
{
    std::string result;
    uIntToStr(value, 0x10, result, prefix, width, '0');
    return result;
}


#    else // ifndef POCO_LONG_IS_64_BIT


inline std::string NumberFormatter::format(Int64 value)
{
    std::string result;
    intToStr(value, 10, result);
    return result;
}


inline std::string NumberFormatter::format(Int64 value, int width)
{
    std::string result;
    intToStr(value, 10, result, false, width, ' ');
    return result;
}


inline std::string NumberFormatter::format0(Int64 value, int width)
{
    std::string result;
    intToStr(value, 10, result, false, width, '0');
    return result;
}


inline std::string NumberFormatter::formatHex(Int64 value, bool prefix)
{
    std::string result;
    uIntToStr(static_cast<UInt64>(value), 0x10, result, prefix);
    return result;
}


inline std::string NumberFormatter::formatHex(Int64 value, int width, bool prefix)
{
    std::string result;
    uIntToStr(static_cast<UInt64>(value), 0x10, result, prefix, width, '0');
    return result;
}


inline std::string NumberFormatter::format(UInt64 value)
{
    std::string result;
    uIntToStr(value, 10, result);
    return result;
}


inline std::string NumberFormatter::format(UInt64 value, int width)
{
    std::string result;
    uIntToStr(value, 10, result, false, width, ' ');
    return result;
}


inline std::string NumberFormatter::format0(UInt64 value, int width)
{
    std::string result;
    uIntToStr(value, 10, result, false, width, '0');
    return result;
}


inline std::string NumberFormatter::formatHex(UInt64 value, bool prefix)
{
    std::string result;
    uIntToStr(value, 0x10, result, prefix);
    return result;
}


inline std::string NumberFormatter::formatHex(UInt64 value, int width, bool prefix)
{
    std::string result;
    uIntToStr(value, 0x10, result, prefix, width, '0');
    return result;
}


#    endif // ifdef POCO_LONG_IS_64_BIT



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;
    floatToFixedStr(result, value, precision, width);
    return result;
}


inline std::string NumberFormatter::format(double value)
{
    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)
{
    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;
    doubleToFixedStr(result, value, precision, width);
    return result;
}


inline std::string NumberFormatter::format(const void * ptr)
{
    std::string result;
    append(result, ptr);
    return result;
}


} // namespace Poco


#endif // Foundation_NumberFormatter_INCLUDED