| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Internal function for converting integers to ASCII. |
| 2 | Copyright (C) 1994-2016 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef _ITOWA_H |
| 20 | #define _ITOWA_H 1 |
| 21 | #include <features.h> |
| 22 | #include <wchar.h> |
| 23 | #include <_itoa.h> |
| 24 | |
| 25 | /* Convert VALUE into ASCII in base BASE (2..36). |
| 26 | Write backwards starting the character just before BUFLIM. |
| 27 | Return the address of the first (left-to-right) character in the number. |
| 28 | Use upper case letters iff UPPER_CASE is nonzero. */ |
| 29 | |
| 30 | extern wchar_t *_itowa (unsigned long long int value, wchar_t *buflim, |
| 31 | unsigned int base, int upper_case); |
| 32 | |
| 33 | static inline wchar_t * |
| 34 | __attribute__ ((unused, always_inline)) |
| 35 | _itowa_word (_ITOA_WORD_TYPE value, wchar_t *buflim, |
| 36 | unsigned int base, int upper_case) |
| 37 | { |
| 38 | extern const wchar_t _itowa_upper_digits[] attribute_hidden; |
| 39 | extern const wchar_t _itowa_lower_digits[] attribute_hidden; |
| 40 | const wchar_t *digits = (upper_case |
| 41 | ? _itowa_upper_digits : _itowa_lower_digits); |
| 42 | wchar_t *bp = buflim; |
| 43 | |
| 44 | switch (base) |
| 45 | { |
| 46 | #define SPECIAL(Base) \ |
| 47 | case Base: \ |
| 48 | do \ |
| 49 | *--bp = digits[value % Base]; \ |
| 50 | while ((value /= Base) != 0); \ |
| 51 | break |
| 52 | |
| 53 | SPECIAL (10); |
| 54 | SPECIAL (16); |
| 55 | SPECIAL (8); |
| 56 | default: |
| 57 | do |
| 58 | *--bp = digits[value % base]; |
| 59 | while ((value /= base) != 0); |
| 60 | } |
| 61 | return bp; |
| 62 | } |
| 63 | #undef SPECIAL |
| 64 | |
| 65 | #if !_ITOA_NEEDED |
| 66 | /* No need for special long long versions. */ |
| 67 | # define _itowa(value, buf, base, upper_case) \ |
| 68 | _itowa_word (value, buf, base, upper_case) |
| 69 | #endif |
| 70 | |
| 71 | #endif /* itowa.h */ |