84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/* Internal function for converting integers to ASCII.
|
|
Copyright (C) 1994,95,96,97,98,99,2002,2003 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#ifndef _ITOWA_H
|
|
#define _ITOWA_H 1
|
|
|
|
/* Convert VALUE into ASCII in base BASE (2..16).
|
|
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. */
|
|
|
|
static const wchar_t _itowa_lower_digits[16] = L_("0123456789abcdef");
|
|
static const wchar_t _itowa_upper_digits[16] = L_("0123456789ABCDEF");
|
|
|
|
static inline wchar_t *
|
|
__attribute__ ((unused, always_inline))
|
|
_itowa_word (unsigned long value, wchar_t *buflim,
|
|
unsigned int base, int upper_case)
|
|
{
|
|
const wchar_t *digits = (upper_case
|
|
? _itowa_upper_digits : _itowa_lower_digits);
|
|
wchar_t *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 wchar_t *
|
|
__attribute__ ((unused, always_inline))
|
|
_itowa (uint64_t value, wchar_t *buflim,
|
|
unsigned int base, int upper_case)
|
|
{
|
|
const wchar_t *digits = (upper_case
|
|
? _itowa_upper_digits : _itowa_lower_digits);
|
|
wchar_t *bp = buflim;
|
|
|
|
switch (base)
|
|
{
|
|
SPECIAL (10);
|
|
SPECIAL (16);
|
|
SPECIAL (8);
|
|
default:
|
|
do
|
|
*--bp = digits[value % base];
|
|
while ((value /= base) != 0);
|
|
}
|
|
return bp;
|
|
}
|
|
#undef SPECIAL
|
|
|
|
#endif /* itowa.h */
|