mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-17 18:40:14 +00:00
81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
/* Internal function for converting integers to ASCII.
|
|
Copyright (C) 1994, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef _ITOA_H
|
|
#define _ITOA_H
|
|
#include <sys/cdefs.h>
|
|
|
|
/* Convert VALUE into ASCII in base BASE (2..36).
|
|
Write backwards starting the character just before BUFLIM.
|
|
Return the address of the first (left-to-right) character in the number.
|
|
Use upper case letters iff UPPER_CASE is nonzero. */
|
|
|
|
extern char *_itoa (unsigned long long int value, char *buflim,
|
|
unsigned int base, int upper_case);
|
|
|
|
static inline char * __attribute__ ((unused))
|
|
_itoa_word (unsigned long value, char *buflim,
|
|
unsigned int base, int upper_case)
|
|
{
|
|
extern const char _itoa_upper_digits[], _itoa_lower_digits[];
|
|
const char *digits = upper_case ? _itoa_upper_digits : _itoa_lower_digits;
|
|
char *bp = buflim;
|
|
|
|
switch (base)
|
|
{
|
|
#define SPECIAL(Base) \
|
|
case Base: \
|
|
do \
|
|
*--bp = digits[value % Base]; \
|
|
while ((value /= Base) != 0); \
|
|
break
|
|
|
|
SPECIAL (10);
|
|
SPECIAL (16);
|
|
SPECIAL (8);
|
|
default:
|
|
do
|
|
*--bp = digits[value % base];
|
|
while ((value /= base) != 0);
|
|
}
|
|
return bp;
|
|
}
|
|
|
|
static inline char * __attribute__ ((unused))
|
|
_fitoa_word (unsigned long value, char *buf, unsigned int base, int upper_case)
|
|
{
|
|
char tmpbuf[sizeof (value) * 4]; /* Worst case length: base 2. */
|
|
char *cp = _itoa_word (value, tmpbuf + sizeof (value) * 4, base, upper_case);
|
|
while (cp < tmpbuf + sizeof (value) * 4)
|
|
*buf++ = *cp++;
|
|
return buf;
|
|
}
|
|
|
|
static inline char * __attribute__ ((unused))
|
|
_fitoa (unsigned long long value, char *buf, unsigned int base, int upper_case)
|
|
{
|
|
char tmpbuf[sizeof (value) * 4]; /* Worst case length: base 2. */
|
|
char *cp = _itoa (value, tmpbuf + sizeof (value) * 4, base, upper_case);
|
|
while (cp < tmpbuf + sizeof (value) * 4)
|
|
*buf++ = *cp++;
|
|
return buf;
|
|
}
|
|
|
|
#endif /* itoa.h */
|