gcvt.c File Reference

#include <precomp.h>

Include dependency graph for gcvt.c:

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Functions
char *CDECL	_gcvt (double number, int ndigit, char *buff)
int CDECL	_gcvt_s (char *buff, size_t size, double number, int digits)

Function Documentation

_gcvt()

char *CDECL _gcvt	(	double	number,
		int	ndigit,
		char *	buff
	)

Definition at line 28 of file gcvt.c.

{
    if (!buff) {
        *_errno() = EINVAL;
        return NULL;
    }
 
    if (ndigit < 0) {
        *_errno() = ERANGE;
        return NULL;
    }
 
    sprintf(buff, "%.*g", ndigit, number);
    return buff;
}

_gcvt_s()

int CDECL _gcvt_s	(	char *	buff,
		size_t	size,
		double	number,
		int	digits
	)

Definition at line 47 of file gcvt.c.

{
    int len;
 
    if (!buff) {
        *_errno() = EINVAL;
        return EINVAL;
    }
 
    if (digits < 0 || digits >= size) {
        if (size)
            buff[0] = '\0';
 
        *_errno() = ERANGE;
        return ERANGE;
    }
 
    len = _scprintf("%.*g", digits, number);
    if (len > size) {
        buff[0] = '\0';
        *_errno() = ERANGE;
        return ERANGE;
    }
 
    sprintf(buff, "%.*g", digits, number);
    return 0;
}