| /* Internal function for converting integers to ASCII. |
| Copyright (C) 1994-2018 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 _ITOA_H |
| #define _ITOA_H |
| |
| #include <limits.h> |
| |
| /* When long long is different from long, by default, _itoa_word is |
| provided to convert long to ASCII and _itoa is provided to convert |
| long long. A sysdeps _itoa.h can define _ITOA_NEEDED to 0 and define |
| _ITOA_WORD_TYPE to unsigned long long int to override it so that |
| _itoa_word is changed to convert long long to ASCII and _itoa is |
| mapped to _itoa_word. */ |
| |
| #ifndef _ITOA_NEEDED |
| # define _ITOA_NEEDED (LONG_MAX != LLONG_MAX) |
| #endif |
| #ifndef _ITOA_WORD_TYPE |
| # define _ITOA_WORD_TYPE unsigned long int |
| #endif |
| |
| |
| /* 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) attribute_hidden; |
| |
| extern const char _itoa_upper_digits[]; |
| extern const char _itoa_lower_digits[]; |
| #if IS_IN (libc) || (IS_IN (rtld) && !defined NO_RTLD_HIDDEN) |
| hidden_proto (_itoa_upper_digits) |
| hidden_proto (_itoa_lower_digits) |
| #endif |
| |
| #if IS_IN (libc) |
| extern char *_itoa_word (_ITOA_WORD_TYPE value, char *buflim, |
| unsigned int base, |
| int upper_case) attribute_hidden; |
| #else |
| static inline char * __attribute__ ((unused, always_inline)) |
| _itoa_word (_ITOA_WORD_TYPE 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; |
| } |
| # undef SPECIAL |
| #endif |
| |
| /* Similar to the _itoa functions, but output starts at buf and pointer |
| after the last written character is returned. */ |
| extern char *_fitoa_word (_ITOA_WORD_TYPE value, char *buf, |
| unsigned int base, |
| int upper_case) attribute_hidden; |
| extern char *_fitoa (unsigned long long value, char *buf, unsigned int base, |
| int upper_case) attribute_hidden; |
| |
| #if !_ITOA_NEEDED |
| /* No need for special long long versions. */ |
| # define _itoa(value, buf, base, upper_case) \ |
| _itoa_word (value, buf, base, upper_case) |
| # define _fitoa(value, buf, base, upper_case) \ |
| _fitoa_word (value, buf, base, upper_case) |
| #endif |
| |
| #endif /* itoa.h */ |