projects / apple / libc.git / blame
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|---|---|---|
| 5b2abdfb | 1 | .\" Copyright (c) 1990, 1991, 1993 |
| e9ce8d39 A |
2 | .\" The Regents of the University of California. All rights reserved. |
| 3 | .\" | |
| 5b2abdfb A |
4 | .\" This code is derived from software contributed to Berkeley by |
| 5 | .\" Chris Torek. | |
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6 | .\" Redistribution and use in source and binary forms, with or without |
| 7 | .\" modification, are permitted provided that the following conditions | |
| 8 | .\" are met: | |
| 9 | .\" 1. Redistributions of source code must retain the above copyright | |
| 10 | .\" notice, this list of conditions and the following disclaimer. | |
| 11 | .\" 2. Redistributions in binary form must reproduce the above copyright | |
| 12 | .\" notice, this list of conditions and the following disclaimer in the | |
| 13 | .\" documentation and/or other materials provided with the distribution. | |
| fc5ea90f | 14 | .\" 3. Neither the name of the University nor the names of its contributors |
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15 | .\" may be used to endorse or promote products derived from this software |
| 16 | .\" without specific prior written permission. | |
| 17 | .\" | |
| 18 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 19 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 20 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 21 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 22 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 23 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 24 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 25 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 26 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 27 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 28 | .\" SUCH DAMAGE. | |
| 29 | .\" | |
| 5b2abdfb | 30 | .\" @(#)bcmp.3 8.1 (Berkeley) 6/4/93 |
| fc5ea90f | 31 | .\" $FreeBSD$ |
| e9ce8d39 | 32 | .\" |
| fc5ea90f | 33 | .Dd August 15, 2016 |
| 5b2abdfb | 34 | .Dt BCMP 3 |
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35 | .Os |
| 36 | .Sh NAME | |
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37 | .Nm bcmp |
| 38 | .Nd compare byte string | |
| e9ce8d39 A |
39 | .Sh LIBRARY |
| 40 | .Lb libc | |
| 41 | .Sh SYNOPSIS | |
| 9385eb3d | 42 | .In strings.h |
| e9ce8d39 | 43 | .Ft int |
| fc5ea90f | 44 | .Fn bcmp "const void *b1" "const void *b2" "size_t len" |
| e9ce8d39 A |
45 | .Sh DESCRIPTION |
| 46 | The | |
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47 | .Fn bcmp |
| 48 | function | |
| 49 | compares byte string | |
| fc5ea90f | 50 | .Fa b1 |
| 5b2abdfb | 51 | against byte string |
| fc5ea90f | 52 | .Fa b2 , |
| 5b2abdfb A |
53 | returning zero if they are identical, non-zero otherwise. |
| 54 | Both strings are assumed to be | |
| fc5ea90f | 55 | .Fa len |
| 5b2abdfb A |
56 | bytes long. |
| 57 | Zero-length strings are always identical. | |
| 58 | .Pp | |
| 59 | The strings may overlap. | |
| e9ce8d39 | 60 | .Sh SEE ALSO |
| 5b2abdfb A |
61 | .Xr memcmp 3 , |
| 62 | .Xr strcasecmp 3 , | |
| 63 | .Xr strcmp 3 , | |
| 64 | .Xr strcoll 3 , | |
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65 | .Xr strxfrm 3 , |
| 66 | .Xr timingsafe_bcmp 3 | |
| e9ce8d39 | 67 | .Sh HISTORY |
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68 | A |
| 69 | .Fn bcmp | |
| e9ce8d39 | 70 | function first appeared in |
| 5b2abdfb | 71 | .Bx 4.2 . |
| 9385eb3d | 72 | Its prototype existed previously in |
| 3d9156a7 | 73 | .In string.h |
| 9385eb3d | 74 | before it was moved to |
| 3d9156a7 | 75 | .In strings.h |
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76 | for |
| 77 | .St -p1003.1-2001 | |
| 78 | compliance. |