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Diffstat (limited to 'stdio-common/_itowa.h')
-rw-r--r-- | stdio-common/_itowa.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/stdio-common/_itowa.h b/stdio-common/_itowa.h new file mode 100644 index 0000000000..e219f298ee --- /dev/null +++ b/stdio-common/_itowa.h @@ -0,0 +1,63 @@ +/* Internal function for converting integers to ASCII. + Copyright (C) 1994, 95, 96, 97, 98, 99 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _ITOWA_H +#define _ITOWA_H 1 +#include <features.h> +#include <wchar.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 __P ((unsigned long long int value, wchar_t *buflim, + unsigned int base, int upper_case)); + +static inline wchar_t * +__attribute__ ((unused)) +_itowa_word (unsigned long value, wchar_t *buflim, + unsigned int base, int upper_case) +{ + extern const wchar_t _itowa_upper_digits[], _itowa_lower_digits[]; + 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; +} + +#endif /* itowa.h */ |