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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6536 | serge | 1 | /* |
| 2 | * Copyright (c) 1990 The Regents of the University of California. |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms are permitted |
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| 6 | * provided that the above copyright notice and this paragraph are |
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| 7 | * duplicated in all such forms and that any documentation, |
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| 8 | * advertising materials, and other materials related to such |
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| 9 | * distribution and use acknowledge that the software was developed |
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| 10 | * by the University of California, Berkeley. The name of the |
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| 11 | * University may not be used to endorse or promote products derived |
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| 12 | * from this software without specific prior written permission. |
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| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
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| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
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| 15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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| 16 | */ |
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| 17 | |||
| 18 | /* |
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| 19 | FUNCTION |
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| 20 | < |
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| 21 | |||
| 22 | INDEX |
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| 23 | getc |
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| 24 | INDEX |
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| 25 | _getc_r |
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| 26 | |||
| 27 | ANSI_SYNOPSIS |
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| 28 | #include |
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| 29 | int getc(FILE *<[fp]>); |
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| 30 | |||
| 31 | #include |
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| 32 | int _getc_r(struct _reent *<[ptr]>, FILE *<[fp]>); |
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| 33 | |||
| 34 | TRAD_SYNOPSIS |
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| 35 | #include |
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| 36 | int getc(<[fp]>) |
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| 37 | FILE *<[fp]>; |
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| 38 | |||
| 39 | #include |
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| 40 | int _getc_r(<[ptr]>, <[fp]>) |
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| 41 | struct _reent *<[ptr]>; |
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| 42 | FILE *<[fp]>; |
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| 43 | |||
| 44 | DESCRIPTION |
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| 45 | < |
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| 46 | to get the next single character from the file or stream |
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| 47 | identified by <[fp]>. As a side effect, < |
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| 48 | current position indicator. |
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| 49 | |||
| 50 | For a subroutine version of this macro, see < |
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| 51 | |||
| 52 | The <<_getc_r>> function is simply the reentrant version of < |
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| 53 | which passes an additional reentrancy structure pointer argument: <[ptr]>. |
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| 54 | |||
| 55 | RETURNS |
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| 56 | The next character (read as an < |
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| 57 | < |
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| 58 | read error; in either of these situations, < |
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| 59 | |||
| 60 | You can distinguish the two situations that cause an < |
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| 61 | using the < |
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| 62 | |||
| 63 | PORTABILITY |
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| 64 | ANSI C requires < |
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| 65 | < |
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| 66 | macro implementations of < |
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| 67 | therefore, in a portable program, you should not use an expression |
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| 68 | with side effects as the < |
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| 69 | |||
| 70 | Supporting OS subroutines required: < |
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| 71 | < |
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| 72 | */ |
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| 73 | |||
| 74 | #if defined(LIBC_SCCS) && !defined(lint) |
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| 75 | static char sccsid[] = "%W% (Berkeley) %G%"; |
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| 76 | #endif /* LIBC_SCCS and not lint */ |
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| 77 | |||
| 78 | #include <_ansi.h> |
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| 79 | #include |
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| 80 | #include "local.h" |
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| 81 | |||
| 82 | /* |
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| 83 | * A subroutine version of the macro getc. |
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| 84 | */ |
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| 85 | |||
| 86 | #undef getc |
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| 87 | |||
| 88 | int |
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| 89 | _DEFUN(_getc_r, (ptr, fp), |
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| 90 | struct _reent *ptr _AND |
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| 91 | register FILE *fp) |
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| 92 | { |
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| 93 | int result; |
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| 94 | CHECK_INIT (ptr, fp); |
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| 95 | _newlib_flockfile_start (fp); |
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| 96 | result = __sgetc_r (ptr, fp); |
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| 97 | _newlib_flockfile_end (fp); |
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| 98 | return result; |
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| 99 | } |
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| 100 | |||
| 101 | #ifndef _REENT_ONLY |
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| 102 | |||
| 103 | int |
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| 104 | _DEFUN(getc, (fp), |
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| 105 | register FILE *fp) |
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| 106 | { |
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| 107 | int result; |
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| 108 | struct _reent *reent = _REENT; |
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| 109 | |||
| 110 | CHECK_INIT (reent, fp); |
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| 111 | _newlib_flockfile_start (fp); |
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| 112 | result = __sgetc_r (reent, fp); |
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| 113 | _newlib_flockfile_end (fp); |
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| 114 | return result; |
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| 115 | } |
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| 116 | |||
| 117 | #endif /* !_REENT_ONLY */ |