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/* Internal function for converting integers to ASCII.
Copyright (C) 1994-2013 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 _ITOA_H
#define _ITOA_H
/* 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 char _itoa_lower_digits[16] = "0123456789abcdef";
static const char _itoa_upper_digits[16] = "0123456789ABCDEF";
static inline char * __attribute__ ((unused, always_inline))
_itoa_word (unsigned long value, char *buflim,
unsigned int base, int upper_case)
{
const char *digits = (upper_case ? _itoa_upper_digits : _itoa_lower_digits);
switch (base)
{
# define SPECIAL(Base) \
case Base: \
do \
*--buflim = digits[value % Base]; \
while ((value /= Base) != 0); \
break
SPECIAL (10);
SPECIAL (16);
SPECIAL (8);
default:
do
*--buflim = digits[value % base];
while ((value /= base) != 0);
}
return buflim;
}
static inline char * __attribute__ ((unused, always_inline))
_itoa (uint64_t value, char *buflim,
unsigned int base, int upper_case)
{
const char *digits = (upper_case ? _itoa_upper_digits : _itoa_lower_digits);
switch (base)
{
SPECIAL (10);
SPECIAL (16);
SPECIAL (8);
default:
do
*--buflim = digits[value % base];
while ((value /= base) != 0);
}
return buflim;
}
# undef SPECIAL
#endif /* itoa.h */
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