/* Internal function for converting integers to ASCII. Copyright (C) 1994-2017 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 <http://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 */