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4349 | 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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6099 | serge | 20 | < |
4349 | Serge | 21 | |
22 | INDEX |
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23 | clearerr |
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6099 | serge | 24 | INDEX |
25 | clearerr_unlocked |
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4349 | Serge | 26 | |
27 | ANSI_SYNOPSIS |
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28 | #include |
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29 | void clearerr(FILE *<[fp]>); |
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30 | |||
6099 | serge | 31 | #define _BSD_SOURCE |
32 | #include |
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33 | void clearerr_unlocked(FILE *<[fp]>); |
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34 | |||
4349 | Serge | 35 | TRAD_SYNOPSIS |
36 | #include |
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37 | void clearerr(<[fp]>) |
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38 | FILE *<[fp]>; |
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39 | |||
6099 | serge | 40 | #define _BSD_SOURCE |
41 | #include |
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42 | void clearerr_unlocked(<[fp]>) |
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43 | FILE *<[fp]>; |
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44 | |||
4349 | Serge | 45 | DESCRIPTION |
46 | The < |
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47 | pointer <[fp]>, to record whether any read or write errors have |
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48 | occurred on the associated file or stream. Similarly, it maintains an |
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49 | end-of-file indicator to record whether there is no more data in the |
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50 | file. |
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51 | |||
52 | Use < |
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53 | |||
54 | See < |
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55 | |||
6099 | serge | 56 | < |
57 | < |
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58 | protected by flockfile() (or ftrylockfile()) and funlockfile(). This |
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59 | function may safely be used in a multi-threaded program if and only |
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60 | if they are called while the invoking thread owns the (FILE *) |
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61 | object, as is the case after a successful call to the flockfile() or |
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62 | ftrylockfile() functions. If threads are disabled, then |
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63 | < |
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4349 | Serge | 64 | |
65 | RETURNS |
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66 | < |
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67 | |||
68 | PORTABILITY |
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69 | ANSI C requires < |
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70 | |||
6099 | serge | 71 | < |
72 | |||
4349 | Serge | 73 | No supporting OS subroutines are required. |
74 | */ |
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75 | |||
76 | #include <_ansi.h> |
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77 | #include |
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78 | #include "local.h" |
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79 | |||
80 | /* A subroutine version of the macro clearerr. */ |
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81 | |||
82 | #undef clearerr |
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83 | |||
84 | _VOID |
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85 | _DEFUN(clearerr, (fp), |
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86 | FILE * fp) |
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87 | { |
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88 | CHECK_INIT(_REENT, fp); |
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4921 | Serge | 89 | _newlib_flockfile_start (fp); |
4349 | Serge | 90 | __sclearerr (fp); |
4921 | Serge | 91 | _newlib_flockfile_end (fp); |
4349 | Serge | 92 | } |