diff options
Diffstat (limited to 'libio/bits')
| -rw-r--r-- | libio/bits/stdio.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/libio/bits/stdio.h b/libio/bits/stdio.h new file mode 100644 index 0000000000..f47749e1d6 --- /dev/null +++ b/libio/bits/stdio.h @@ -0,0 +1,160 @@ +/* Optimizing macros and inline functions for stdio functions. + Copyright (C) 198 Free Software Foundation, Inc. + + 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 _STDIO_H +# error "Never include <bits/stdio.h> directly; use <stdio.h> instead." +#endif + +#ifdef __cplusplus +# define __STDIO_INLINE inline +#else +# define __STDIO_INLINE extern __inline +#endif + + +#ifdef __USE_EXTERN_INLINES +/* Write formatted output to stdout from argument list ARG. */ +__STDIO_INLINE int +vprintf (__const char *__restrict __fmt, _G_va_list __arg) __THROW +{ + return vfprintf (stdout, __fmt, __arg); +} + +/* Read a character from stdin. */ +__STDIO_INLINE int +getchar (void) __THROW +{ + return _IO_getc (stdin); +} + + +# if defined __USE_POSIX || defined __USE_MISC +/* This is defined in POSIX.1:1996. */ +__STDIO_INLINE int +getc_unlocked (FILE *__fp) __THROW +{ + return _IO_getc_unlocked (__fp); +} + +/* This is defined in POSIX.1:1996. */ +__STDIO_INLINE int +getchar_unlocked (void) __THROW +{ + return _IO_getc_unlocked (stdin); +} +# endif /* POSIX || misc */ + + +/* Write a character to stdout. */ +__STDIO_INLINE int +putchar (int __c) __THROW +{ + return _IO_putc (__c, stdout); +} + + +# ifdef __USE_MISC +/* Faster version when locking is not necessary. */ +__STDIO_INLINE int +fputc_unlocked (int __c, FILE *__stream) __THROW +{ + return _IO_putc_unlocked (__c, __stream); +} +# endif /* misc */ + + +# if defined __USE_POSIX || defined __USE_MISC +/* This is defined in POSIX.1:1996. */ +__STDIO_INLINE int +putc_unlocked (int __c, FILE *__stream) __THROW +{ + return _IO_putc_unlocked (__c, __stream); +} + +/* This is defined in POSIX.1:1996. */ +__STDIO_INLINE int +putchar_unlocked (int __c) __THROW +{ + return _IO_putc_unlocked (__c, stdout); +} +# endif /* POSIX || misc */ + + +# ifdef __USE_GNU +/* Like `getdelim', but reads up to a newline. */ +__STDIO_INLINE _IO_ssize_t +getline (char **__lineptr, size_t *__n, FILE *__stream) __THROW +{ + return __getdelim (__lineptr, __n, '\n', __stream); +} +# endif /* GNU */ + + +# ifdef __USE_MISC +/* Faster versions when locking is not required. */ +__STDIO_INLINE int +feof_unlocked (FILE *__stream) __THROW +{ + return _IO_feof_unlocked (__stream); +} + +/* Faster versions when locking is not required. */ +__STDIO_INLINE int +ferror_unlocked (FILE *__stream) __THROW +{ + return _IO_ferror_unlocked (__stream); +} +# endif /* misc */ + +#endif /* Use extern inlines. */ + + +#if defined __USE_MISC && defined __GNUC__ && defined __OPTIMIZE__ +/* Perform some simple optimizations. */ +# define fread_unlocked(ptr, size, n, stream) \ + (__extension__ ((__builtin_constant_p (size) && __builtin_constant_p (n) \ + && (size_t) ((size) * (n)) <= 8) \ + ? ({ char *__ptr = (char *) (ptr); \ + FILE *__stream = (stream); \ + int __c; \ + size_t __cnt = (size) * (n); \ + while (__cnt-- > 0) \ + { \ + __c = _IO_getc_unlocked (__stream); \ + if (__c == EOF) \ + break; \ + *__ptr++ = __c; \ + } \ + ((size_t) ((size) * (n)) - __cnt) / (size); }) \ + : fread_unlocked (ptr, size, n, stream))) + +# define fwrite_unlocked(ptr, size, n, stream) \ + (__extension__ ((__builtin_constant_p (size) && __builtin_constant_p (n) \ + && (size_t) ((size) * (n)) <= 8) \ + ? ({ const char *__ptr = (const char *) (ptr); \ + FILE *__stream = (stream); \ + size_t __cnt = (size) * (n); \ + while (__cnt-- > 0) \ + if (_IO_putc_unlocked (*__ptr++, __stream) == EOF) \ + break; \ + ((size_t) ((size) * (n)) - __cnt) / (size); }) \ + : fwrite_unlocked (ptr, size, n, stream))) +#endif + +/* Define helper macro. */ +#undef __STDIO_INLINE |