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<pre class="sourceHeading"> Branch data Line data Source code</pre>
<pre class="source">
<a name="1"><span class="lineNum"> 1 </span> : : /* Optimizing macros and inline functions for stdio functions.</a>
<a name="2"><span class="lineNum"> 2 </span> : : Copyright (C) 1998-2022 Free Software Foundation, Inc.</a>
<a name="3"><span class="lineNum"> 3 </span> : : This file is part of the GNU C Library.</a>
<a name="4"><span class="lineNum"> 4 </span> : : </a>
<a name="5"><span class="lineNum"> 5 </span> : : The GNU C Library is free software; you can redistribute it and/or</a>
<a name="6"><span class="lineNum"> 6 </span> : : modify it under the terms of the GNU Lesser General Public</a>
<a name="7"><span class="lineNum"> 7 </span> : : License as published by the Free Software Foundation; either</a>
<a name="8"><span class="lineNum"> 8 </span> : : version 2.1 of the License, or (at your option) any later version.</a>
<a name="9"><span class="lineNum"> 9 </span> : : </a>
<a name="10"><span class="lineNum"> 10 </span> : : The GNU C Library is distributed in the hope that it will be useful,</a>
<a name="11"><span class="lineNum"> 11 </span> : : but WITHOUT ANY WARRANTY; without even the implied warranty of</a>
<a name="12"><span class="lineNum"> 12 </span> : : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</a>
<a name="13"><span class="lineNum"> 13 </span> : : Lesser General Public License for more details.</a>
<a name="14"><span class="lineNum"> 14 </span> : : </a>
<a name="15"><span class="lineNum"> 15 </span> : : You should have received a copy of the GNU Lesser General Public</a>
<a name="16"><span class="lineNum"> 16 </span> : : License along with the GNU C Library; if not, see</a>
<a name="17"><span class="lineNum"> 17 </span> : : <https://www.gnu.org/licenses/>. */</a>
<a name="18"><span class="lineNum"> 18 </span> : : </a>
<a name="19"><span class="lineNum"> 19 </span> : : #ifndef _BITS_STDIO_H</a>
<a name="20"><span class="lineNum"> 20 </span> : : #define _BITS_STDIO_H 1</a>
<a name="21"><span class="lineNum"> 21 </span> : : </a>
<a name="22"><span class="lineNum"> 22 </span> : : #ifndef _STDIO_H</a>
<a name="23"><span class="lineNum"> 23 </span> : : # error "Never include <bits/stdio.h> directly; use <stdio.h> instead."</a>
<a name="24"><span class="lineNum"> 24 </span> : : #endif</a>
<a name="25"><span class="lineNum"> 25 </span> : : </a>
<a name="26"><span class="lineNum"> 26 </span> : : #ifndef __extern_inline</a>
<a name="27"><span class="lineNum"> 27 </span> : : # define __STDIO_INLINE inline</a>
<a name="28"><span class="lineNum"> 28 </span> : : #else</a>
<a name="29"><span class="lineNum"> 29 </span> : : # define __STDIO_INLINE __extern_inline</a>
<a name="30"><span class="lineNum"> 30 </span> : : #endif</a>
<a name="31"><span class="lineNum"> 31 </span> : : </a>
<a name="32"><span class="lineNum"> 32 </span> : : </a>
<a name="33"><span class="lineNum"> 33 </span> : : #ifdef __USE_EXTERN_INLINES</a>
<a name="34"><span class="lineNum"> 34 </span> : : /* For -D_FORTIFY_SOURCE{,=2,=3} bits/stdio2.h will define a different</a>
<a name="35"><span class="lineNum"> 35 </span> : : inline. */</a>
<a name="36"><span class="lineNum"> 36 </span> : : # if !(__USE_FORTIFY_LEVEL > 0 && defined __fortify_function)</a>
<a name="37"><span class="lineNum"> 37 </span> : : /* Write formatted output to stdout from argument list ARG. */</a>
<a name="38"><span class="lineNum"> 38 </span> : : __STDIO_INLINE int</a>
<a name="39"><span class="lineNum"> 39 </span> : : vprintf (const char *__restrict __fmt, __gnuc_va_list __arg)</a>
<a name="40"><span class="lineNum"> 40 </span> : : {</a>
<a name="41"><span class="lineNum"> 41 </span> : : return vfprintf (stdout, __fmt, __arg);</a>
<a name="42"><span class="lineNum"> 42 </span> : : }</a>
<a name="43"><span class="lineNum"> 43 </span> : : # endif</a>
<a name="44"><span class="lineNum"> 44 </span> : : </a>
<a name="45"><span class="lineNum"> 45 </span> : : /* Read a character from stdin. */</a>
<a name="46"><span class="lineNum"> 46 </span> : : __STDIO_INLINE int</a>
<a name="47"><span class="lineNum"> 47 </span> : : getchar (void)</a>
<a name="48"><span class="lineNum"> 48 </span> : : {</a>
<a name="49"><span class="lineNum"> 49 </span> : : return getc (stdin);</a>
<a name="50"><span class="lineNum"> 50 </span> : : }</a>
<a name="51"><span class="lineNum"> 51 </span> : : </a>
<a name="52"><span class="lineNum"> 52 </span> : : </a>
<a name="53"><span class="lineNum"> 53 </span> : : # ifdef __USE_MISC</a>
<a name="54"><span class="lineNum"> 54 </span> : : /* Faster version when locking is not necessary. */</a>
<a name="55"><span class="lineNum"> 55 </span> : : __STDIO_INLINE int</a>
<a name="56"><span class="lineNum"> 56 </span> : : fgetc_unlocked (FILE *__fp)</a>
<a name="57"><span class="lineNum"> 57 </span> : : {</a>
<a name="58"><span class="lineNum"> 58 </span> : : return __getc_unlocked_body (__fp);</a>
<a name="59"><span class="lineNum"> 59 </span> : : }</a>
<a name="60"><span class="lineNum"> 60 </span> : : # endif /* misc */</a>
<a name="61"><span class="lineNum"> 61 </span> : : </a>
<a name="62"><span class="lineNum"> 62 </span> : : </a>
<a name="63"><span class="lineNum"> 63 </span> : : # ifdef __USE_POSIX199506</a>
<a name="64"><span class="lineNum"> 64 </span> : : /* This is defined in POSIX.1:1996. */</a>
<a name="65"><span class="lineNum"> 65 </span> : : __STDIO_INLINE int</a>
<a name="66"><span class="lineNum"> 66 </span> : : getc_unlocked (FILE *__fp)</a>
<a name="67"><span class="lineNum"> 67 </span> : : {</a>
<a name="68"><span class="lineNum"> 68 </span> : : return __getc_unlocked_body (__fp);</a>
<a name="69"><span class="lineNum"> 69 </span> : : }</a>
<a name="70"><span class="lineNum"> 70 </span> : : </a>
<a name="71"><span class="lineNum"> 71 </span> : : /* This is defined in POSIX.1:1996. */</a>
<a name="72"><span class="lineNum"> 72 </span> : : __STDIO_INLINE int</a>
<a name="73"><span class="lineNum"> 73 </span> : : getchar_unlocked (void)</a>
<a name="74"><span class="lineNum"> 74 </span> : : {</a>
<a name="75"><span class="lineNum"> 75 </span> : : return __getc_unlocked_body (stdin);</a>
<a name="76"><span class="lineNum"> 76 </span> : : }</a>
<a name="77"><span class="lineNum"> 77 </span> : : # endif /* POSIX */</a>
<a name="78"><span class="lineNum"> 78 </span> : : </a>
<a name="79"><span class="lineNum"> 79 </span> : : </a>
<a name="80"><span class="lineNum"> 80 </span> : : /* Write a character to stdout. */</a>
<a name="81"><span class="lineNum"> 81 </span> : : __STDIO_INLINE int</a>
<a name="82"><span class="lineNum"> 82 </span> :<span class="lineCov"> 1580 : putchar (int __c)</span></a>
<a name="83"><span class="lineNum"> 83 </span> : : {</a>
<a name="84"><span class="lineNum"> 84 </span> :<span class="lineCov"> 1580 : return putc (__c, stdout);</span></a>
<a name="85"><span class="lineNum"> 85 </span> : : }</a>
<a name="86"><span class="lineNum"> 86 </span> : : </a>
<a name="87"><span class="lineNum"> 87 </span> : : </a>
<a name="88"><span class="lineNum"> 88 </span> : : # ifdef __USE_MISC</a>
<a name="89"><span class="lineNum"> 89 </span> : : /* Faster version when locking is not necessary. */</a>
<a name="90"><span class="lineNum"> 90 </span> : : __STDIO_INLINE int</a>
<a name="91"><span class="lineNum"> 91 </span> : : fputc_unlocked (int __c, FILE *__stream)</a>
<a name="92"><span class="lineNum"> 92 </span> : : {</a>
<a name="93"><span class="lineNum"> 93 </span> : : return __putc_unlocked_body (__c, __stream);</a>
<a name="94"><span class="lineNum"> 94 </span> : : }</a>
<a name="95"><span class="lineNum"> 95 </span> : : # endif /* misc */</a>
<a name="96"><span class="lineNum"> 96 </span> : : </a>
<a name="97"><span class="lineNum"> 97 </span> : : </a>
<a name="98"><span class="lineNum"> 98 </span> : : # ifdef __USE_POSIX199506</a>
<a name="99"><span class="lineNum"> 99 </span> : : /* This is defined in POSIX.1:1996. */</a>
<a name="100"><span class="lineNum"> 100 </span> : : __STDIO_INLINE int</a>
<a name="101"><span class="lineNum"> 101 </span> : : putc_unlocked (int __c, FILE *__stream)</a>
<a name="102"><span class="lineNum"> 102 </span> : : {</a>
<a name="103"><span class="lineNum"> 103 </span> : : return __putc_unlocked_body (__c, __stream);</a>
<a name="104"><span class="lineNum"> 104 </span> : : }</a>
<a name="105"><span class="lineNum"> 105 </span> : : </a>
<a name="106"><span class="lineNum"> 106 </span> : : /* This is defined in POSIX.1:1996. */</a>
<a name="107"><span class="lineNum"> 107 </span> : : __STDIO_INLINE int</a>
<a name="108"><span class="lineNum"> 108 </span> : : putchar_unlocked (int __c)</a>
<a name="109"><span class="lineNum"> 109 </span> : : {</a>
<a name="110"><span class="lineNum"> 110 </span> : : return __putc_unlocked_body (__c, stdout);</a>
<a name="111"><span class="lineNum"> 111 </span> : : }</a>
<a name="112"><span class="lineNum"> 112 </span> : : # endif /* POSIX */</a>
<a name="113"><span class="lineNum"> 113 </span> : : </a>
<a name="114"><span class="lineNum"> 114 </span> : : </a>
<a name="115"><span class="lineNum"> 115 </span> : : # ifdef __USE_GNU</a>
<a name="116"><span class="lineNum"> 116 </span> : : /* Like `getdelim', but reads up to a newline. */</a>
<a name="117"><span class="lineNum"> 117 </span> : : __STDIO_INLINE __ssize_t</a>
<a name="118"><span class="lineNum"> 118 </span> : : getline (char **__lineptr, size_t *__n, FILE *__stream)</a>
<a name="119"><span class="lineNum"> 119 </span> : : {</a>
<a name="120"><span class="lineNum"> 120 </span> : : return __getdelim (__lineptr, __n, '\n', __stream);</a>
<a name="121"><span class="lineNum"> 121 </span> : : }</a>
<a name="122"><span class="lineNum"> 122 </span> : : # endif /* GNU */</a>
<a name="123"><span class="lineNum"> 123 </span> : : </a>
<a name="124"><span class="lineNum"> 124 </span> : : </a>
<a name="125"><span class="lineNum"> 125 </span> : : # ifdef __USE_MISC</a>
<a name="126"><span class="lineNum"> 126 </span> : : /* Faster versions when locking is not required. */</a>
<a name="127"><span class="lineNum"> 127 </span> : : __STDIO_INLINE int</a>
<a name="128"><span class="lineNum"> 128 </span> : : __NTH (feof_unlocked (FILE *__stream))</a>
<a name="129"><span class="lineNum"> 129 </span> : : {</a>
<a name="130"><span class="lineNum"> 130 </span> : : return __feof_unlocked_body (__stream);</a>
<a name="131"><span class="lineNum"> 131 </span> : : }</a>
<a name="132"><span class="lineNum"> 132 </span> : : </a>
<a name="133"><span class="lineNum"> 133 </span> : : /* Faster versions when locking is not required. */</a>
<a name="134"><span class="lineNum"> 134 </span> : : __STDIO_INLINE int</a>
<a name="135"><span class="lineNum"> 135 </span> : : __NTH (ferror_unlocked (FILE *__stream))</a>
<a name="136"><span class="lineNum"> 136 </span> : : {</a>
<a name="137"><span class="lineNum"> 137 </span> : : return __ferror_unlocked_body (__stream);</a>
<a name="138"><span class="lineNum"> 138 </span> : : }</a>
<a name="139"><span class="lineNum"> 139 </span> : : # endif /* misc */</a>
<a name="140"><span class="lineNum"> 140 </span> : : </a>
<a name="141"><span class="lineNum"> 141 </span> : : #endif /* Use extern inlines. */</a>
<a name="142"><span class="lineNum"> 142 </span> : : </a>
<a name="143"><span class="lineNum"> 143 </span> : : </a>
<a name="144"><span class="lineNum"> 144 </span> : : #if defined __USE_MISC && defined __GNUC__ && defined __OPTIMIZE__ \</a>
<a name="145"><span class="lineNum"> 145 </span> : : && !defined __cplusplus</a>
<a name="146"><span class="lineNum"> 146 </span> : : /* Perform some simple optimizations. */</a>
<a name="147"><span class="lineNum"> 147 </span> : : # define fread_unlocked(ptr, size, n, stream) \</a>
<a name="148"><span class="lineNum"> 148 </span> : : (__extension__ ((__builtin_constant_p (size) && __builtin_constant_p (n) \</a>
<a name="149"><span class="lineNum"> 149 </span> : : && (size_t) (size) * (size_t) (n) <= 8 \</a>
<a name="150"><span class="lineNum"> 150 </span> : : && (size_t) (size) != 0) \</a>
<a name="151"><span class="lineNum"> 151 </span> : : ? ({ char *__ptr = (char *) (ptr); \</a>
<a name="152"><span class="lineNum"> 152 </span> : : FILE *__stream = (stream); \</a>
<a name="153"><span class="lineNum"> 153 </span> : : size_t __cnt; \</a>
<a name="154"><span class="lineNum"> 154 </span> : : for (__cnt = (size_t) (size) * (size_t) (n); \</a>
<a name="155"><span class="lineNum"> 155 </span> : : __cnt > 0; --__cnt) \</a>
<a name="156"><span class="lineNum"> 156 </span> : : { \</a>
<a name="157"><span class="lineNum"> 157 </span> : : int __c = getc_unlocked (__stream); \</a>
<a name="158"><span class="lineNum"> 158 </span> : : if (__c == EOF) \</a>
<a name="159"><span class="lineNum"> 159 </span> : : break; \</a>
<a name="160"><span class="lineNum"> 160 </span> : : *__ptr++ = __c; \</a>
<a name="161"><span class="lineNum"> 161 </span> : : } \</a>
<a name="162"><span class="lineNum"> 162 </span> : : ((size_t) (size) * (size_t) (n) - __cnt) \</a>
<a name="163"><span class="lineNum"> 163 </span> : : / (size_t) (size); }) \</a>
<a name="164"><span class="lineNum"> 164 </span> : : : (((__builtin_constant_p (size) && (size_t) (size) == 0) \</a>
<a name="165"><span class="lineNum"> 165 </span> : : || (__builtin_constant_p (n) && (size_t) (n) == 0)) \</a>
<a name="166"><span class="lineNum"> 166 </span> : : /* Evaluate all parameters once. */ \</a>
<a name="167"><span class="lineNum"> 167 </span> : : ? ((void) (ptr), (void) (stream), (void) (size), \</a>
<a name="168"><span class="lineNum"> 168 </span> : : (void) (n), (size_t) 0) \</a>
<a name="169"><span class="lineNum"> 169 </span> : : : fread_unlocked (ptr, size, n, stream))))</a>
<a name="170"><span class="lineNum"> 170 </span> : : </a>
<a name="171"><span class="lineNum"> 171 </span> : : # define fwrite_unlocked(ptr, size, n, stream) \</a>
<a name="172"><span class="lineNum"> 172 </span> : : (__extension__ ((__builtin_constant_p (size) && __builtin_constant_p (n) \</a>
<a name="173"><span class="lineNum"> 173 </span> : : && (size_t) (size) * (size_t) (n) <= 8 \</a>
<a name="174"><span class="lineNum"> 174 </span> : : && (size_t) (size) != 0) \</a>
<a name="175"><span class="lineNum"> 175 </span> : : ? ({ const char *__ptr = (const char *) (ptr); \</a>
<a name="176"><span class="lineNum"> 176 </span> : : FILE *__stream = (stream); \</a>
<a name="177"><span class="lineNum"> 177 </span> : : size_t __cnt; \</a>
<a name="178"><span class="lineNum"> 178 </span> : : for (__cnt = (size_t) (size) * (size_t) (n); \</a>
<a name="179"><span class="lineNum"> 179 </span> : : __cnt > 0; --__cnt) \</a>
<a name="180"><span class="lineNum"> 180 </span> : : if (putc_unlocked (*__ptr++, __stream) == EOF) \</a>
<a name="181"><span class="lineNum"> 181 </span> : : break; \</a>
<a name="182"><span class="lineNum"> 182 </span> : : ((size_t) (size) * (size_t) (n) - __cnt) \</a>
<a name="183"><span class="lineNum"> 183 </span> : : / (size_t) (size); }) \</a>
<a name="184"><span class="lineNum"> 184 </span> : : : (((__builtin_constant_p (size) && (size_t) (size) == 0) \</a>
<a name="185"><span class="lineNum"> 185 </span> : : || (__builtin_constant_p (n) && (size_t) (n) == 0)) \</a>
<a name="186"><span class="lineNum"> 186 </span> : : /* Evaluate all parameters once. */ \</a>
<a name="187"><span class="lineNum"> 187 </span> : : ? ((void) (ptr), (void) (stream), (void) (size), \</a>
<a name="188"><span class="lineNum"> 188 </span> : : (void) (n), (size_t) 0) \</a>
<a name="189"><span class="lineNum"> 189 </span> : : : fwrite_unlocked (ptr, size, n, stream))))</a>
<a name="190"><span class="lineNum"> 190 </span> : : #endif</a>
<a name="191"><span class="lineNum"> 191 </span> : : </a>
<a name="192"><span class="lineNum"> 192 </span> : : /* Define helper macro. */</a>
<a name="193"><span class="lineNum"> 193 </span> : : #undef __STDIO_INLINE</a>
<a name="194"><span class="lineNum"> 194 </span> : : </a>
<a name="195"><span class="lineNum"> 195 </span> : : #endif /* bits/stdio.h. */</a>
</pre>
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