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author | H.J. Lu <hjl.tools@gmail.com> | 2012-03-20 16:00:23 -0700 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2012-03-20 16:00:23 -0700 |
commit | eb96ffb07d0b1b23ecfaf9520d6757c7dbea0bd1 (patch) | |
tree | aae4fe72d6bb48e8e0cb0d0b85676895fab29a8e /sysdeps/generic/_itoa.h | |
parent | d1af992d0d8184db0a4d264c00a2720722e1a280 (diff) | |
download | glibc-eb96ffb07d0b1b23ecfaf9520d6757c7dbea0bd1.tar.gz glibc-eb96ffb07d0b1b23ecfaf9520d6757c7dbea0bd1.tar.xz glibc-eb96ffb07d0b1b23ecfaf9520d6757c7dbea0bd1.zip |
Move stdio-common/_itoa.h to sysdeps/generic
Diffstat (limited to 'sysdeps/generic/_itoa.h')
-rw-r--r-- | sysdeps/generic/_itoa.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/sysdeps/generic/_itoa.h b/sysdeps/generic/_itoa.h new file mode 100644 index 0000000000..8870ee0286 --- /dev/null +++ b/sysdeps/generic/_itoa.h @@ -0,0 +1,92 @@ +/* Internal function for converting integers to ASCII. + Copyright (C) 1994-1999,2002,2003,2007 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> + +/* 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); + +extern const char _itoa_upper_digits[]; +extern const char _itoa_upper_digits_internal[] attribute_hidden; +extern const char _itoa_lower_digits[]; +extern const char _itoa_lower_digits_internal[] attribute_hidden; + +#ifndef NOT_IN_libc +extern char *_itoa_word (unsigned long value, char *buflim, + unsigned int base, int upper_case); +#else +static inline char * __attribute__ ((unused, always_inline)) +_itoa_word (unsigned long value, char *buflim, + unsigned int base, int upper_case) +{ + const char *digits = (upper_case +# if defined IS_IN_rtld + ? INTUSE(_itoa_upper_digits) + : INTUSE(_itoa_lower_digits) +# else + ? _itoa_upper_digits + : _itoa_lower_digits +# endif + ); + + 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 (unsigned long 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 LONG_MAX == LLONG_MAX +/* 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 */ |