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/* Internal function for converting integers to ASCII.
Copyright (C) 1994-2025 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, see
<https://www.gnu.org/licenses/>. */
#ifndef _ITOWA_H
#define _ITOWA_H 1
#include <features.h>
#include <wchar.h>
#include <_itoa.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 wchar_t *_itowa (unsigned long long int value, wchar_t *buflim,
unsigned int base, int upper_case);
static inline wchar_t *
__attribute__ ((unused, always_inline))
_itowa_word (_ITOA_WORD_TYPE value, wchar_t *buflim,
unsigned int base, int upper_case)
{
extern const wchar_t _itowa_upper_digits[] attribute_hidden;
extern const wchar_t _itowa_lower_digits[] attribute_hidden;
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;
}
#undef SPECIAL
#if !_ITOA_NEEDED
/* No need for special long long versions. */
# define _itowa(value, buf, base, upper_case) \
_itowa_word (value, buf, base, upper_case)
#endif
#endif /* itowa.h */
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