fcvt.c File Reference

Define the functions required to turn double values into a string. More...

Macros
#define	__DEBUG_HEADER__   "[FCVT] "
	Change header.
#define	__DEBUG_LEVEL__   LOGLEVEL_NOTICE
	Set log level.

Functions
static void	cvt (double arg, int ndigits, int *decpt, int *sign, char *buf, unsigned buf_size, int eflag)
	Converts a floating-point number into a string representation. More...
void	ecvtbuf (double arg, int chars, int *decpt, int *sign, char *buf, unsigned buf_size)
	Thif function transforms value into a string of digits inside buf, representing the whole part followed by the decimal part. More...
void	fcvtbuf (double arg, int decimals, int *decpt, int *sign, char *buf, unsigned buf_size)
	Thif function transforms value into a string of digits inside buf, representing the whole part followed by the decimal part. More...

Detailed Description

Define the functions required to turn double values into a string.

Copyright

(c) 2014-2024 This file is distributed under the MIT License. See LICENSE.md for details.

Function Documentation

cvt()

static void cvt ( double  arg, int  ndigits, int *  decpt, int *  sign, char *  buf, unsigned  buf_size, int  eflag  )

static

Converts a floating-point number into a string representation.

Parameters

arg	The floating-point number to convert.
ndigits	The number of digits to generate after the decimal point.
decpt	A pointer to an integer that will store the position of the decimal point.
sign	A pointer to an integer that will store the sign of the number (1 if negative, 0 otherwise).
buf	A character buffer where the resulting string will be stored.
buf_size	The size of the buffer.
eflag	A flag indicating whether to use exponential notation (1 for exponential, 0 for standard).

ecvtbuf()

void ecvtbuf	(	double	arg,
		int	chars,
		int *	decpt,
		int *	sign,
		char *	buf,
		unsigned	buf_size
	)

Thif function transforms value into a string of digits inside buf, representing the whole part followed by the decimal part.

For instance, 512.765 will result in: decpt = 3 sign = 0 buf = "512765"

Parameters

arg	The argument to turn into string.
chars	The total number of digits.
decpt	The position of the decimal point.
sign	The sign of the number.
buf	Buffer where the digits should be placed.
buf_size	Dimension of the buffer.

fcvtbuf()

void fcvtbuf	(	double	arg,
		int	decimals,
		int *	decpt,
		int *	sign,
		char *	buf,
		unsigned	buf_size
	)

Thif function transforms value into a string of digits inside buf, representing the whole part followed by the decimal part.

For instance, 512.765 will result in: decpt = 3 sign = 0 buf = "512765"

Parameters

arg	The argument to turn into string.
decimals	The total number of digits to write after the decimal point.
decpt	The position of the decimal point.
sign	The sign of the number.
buf	Buffer where the digits should be placed.
buf_size	Dimension of the buffer.