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- /* Optimizing macros and inline functions for stdio functions.
- Copyright (C) 1998-2016 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 _STDIO_H
- # error "Never include <bits/stdio.h> directly; use <stdio.h> instead."
- #endif
- #ifndef __extern_inline
- # define __STDIO_INLINE inline
- #else
- # define __STDIO_INLINE __extern_inline
- #endif
- #ifdef __USE_EXTERN_INLINES
- /* For -D_FORTIFY_SOURCE{,=2} bits/stdio2.h will define a different
- inline. */
- # if !(__USE_FORTIFY_LEVEL > 0 && defined __fortify_function)
- /* Write formatted output to stdout from argument list ARG. */
- __STDIO_INLINE int
- vprintf (const char *__restrict __fmt, _G_va_list __arg)
- {
- return vfprintf (stdout, __fmt, __arg);
- }
- # endif
- /* Read a character from stdin. */
- __STDIO_INLINE int
- getchar (void)
- {
- return _IO_getc (stdin);
- }
- # ifdef __USE_MISC
- /* Faster version when locking is not necessary. */
- __STDIO_INLINE int
- fgetc_unlocked (FILE *__fp)
- {
- return _IO_getc_unlocked (__fp);
- }
- # endif /* misc */
- # ifdef __USE_POSIX
- /* This is defined in POSIX.1:1996. */
- __STDIO_INLINE int
- getc_unlocked (FILE *__fp)
- {
- return _IO_getc_unlocked (__fp);
- }
- /* This is defined in POSIX.1:1996. */
- __STDIO_INLINE int
- getchar_unlocked (void)
- {
- return _IO_getc_unlocked (stdin);
- }
- # endif /* POSIX */
- /* Write a character to stdout. */
- __STDIO_INLINE int
- putchar (int __c)
- {
- return _IO_putc (__c, stdout);
- }
- # ifdef __USE_MISC
- /* Faster version when locking is not necessary. */
- __STDIO_INLINE int
- fputc_unlocked (int __c, FILE *__stream)
- {
- return _IO_putc_unlocked (__c, __stream);
- }
- # endif /* misc */
- # ifdef __USE_POSIX
- /* This is defined in POSIX.1:1996. */
- __STDIO_INLINE int
- putc_unlocked (int __c, FILE *__stream)
- {
- return _IO_putc_unlocked (__c, __stream);
- }
- /* This is defined in POSIX.1:1996. */
- __STDIO_INLINE int
- putchar_unlocked (int __c)
- {
- return _IO_putc_unlocked (__c, stdout);
- }
- # endif /* POSIX */
- # ifdef __USE_GNU
- /* Like `getdelim', but reads up to a newline. */
- __STDIO_INLINE _IO_ssize_t
- getline (char **__lineptr, size_t *__n, FILE *__stream)
- {
- return __getdelim (__lineptr, __n, '\n', __stream);
- }
- # endif /* GNU */
- # ifdef __USE_MISC
- /* Faster versions when locking is not required. */
- __STDIO_INLINE int
- __NTH (feof_unlocked (FILE *__stream))
- {
- return _IO_feof_unlocked (__stream);
- }
- /* Faster versions when locking is not required. */
- __STDIO_INLINE int
- __NTH (ferror_unlocked (FILE *__stream))
- {
- return _IO_ferror_unlocked (__stream);
- }
- # endif /* misc */
- #endif /* Use extern inlines. */
- #if defined __USE_MISC && defined __GNUC__ && defined __OPTIMIZE__ \
- && !defined __cplusplus
- /* Perform some simple optimizations. */
- # define fread_unlocked(ptr, size, n, stream) \
- (__extension__ ((__builtin_constant_p (size) && __builtin_constant_p (n) \
- && (size_t) (size) * (size_t) (n) <= 8 \
- && (size_t) (size) != 0) \
- ? ({ char *__ptr = (char *) (ptr); \
- FILE *__stream = (stream); \
- size_t __cnt; \
- for (__cnt = (size_t) (size) * (size_t) (n); \
- __cnt > 0; --__cnt) \
- { \
- int __c = _IO_getc_unlocked (__stream); \
- if (__c == EOF) \
- break; \
- *__ptr++ = __c; \
- } \
- ((size_t) (size) * (size_t) (n) - __cnt) \
- / (size_t) (size); }) \
- : (((__builtin_constant_p (size) && (size_t) (size) == 0) \
- || (__builtin_constant_p (n) && (size_t) (n) == 0)) \
- /* Evaluate all parameters once. */ \
- ? ((void) (ptr), (void) (stream), (void) (size), \
- (void) (n), (size_t) 0) \
- : 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) * (size_t) (n) <= 8 \
- && (size_t) (size) != 0) \
- ? ({ const char *__ptr = (const char *) (ptr); \
- FILE *__stream = (stream); \
- size_t __cnt; \
- for (__cnt = (size_t) (size) * (size_t) (n); \
- __cnt > 0; --__cnt) \
- if (_IO_putc_unlocked (*__ptr++, __stream) == EOF) \
- break; \
- ((size_t) (size) * (size_t) (n) - __cnt) \
- / (size_t) (size); }) \
- : (((__builtin_constant_p (size) && (size_t) (size) == 0) \
- || (__builtin_constant_p (n) && (size_t) (n) == 0)) \
- /* Evaluate all parameters once. */ \
- ? ((void) (ptr), (void) (stream), (void) (size), \
- (void) (n), (size_t) 0) \
- : fwrite_unlocked (ptr, size, n, stream))))
- #endif
- /* Define helper macro. */
- #undef __STDIO_INLINE
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