projects / thirdparty / man-pages.git / blame
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1 | .\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) |
| 2 | .\" | |
| 3 | .\" Permission is granted to make and distribute verbatim copies of this | |
| 4 | .\" manual provided the copyright notice and this permission notice are | |
| 5 | .\" preserved on all copies. | |
| 6 | .\" | |
| 7 | .\" Permission is granted to copy and distribute modified versions of this | |
| 8 | .\" manual under the conditions for verbatim copying, provided that the | |
| 9 | .\" entire resulting derived work is distributed under the terms of a | |
| 10 | .\" permission notice identical to this one. | |
| c13182ef | 11 | .\" |
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12 | .\" Since the Linux kernel and libraries are constantly changing, this |
| 13 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
| 14 | .\" responsibility for errors or omissions, or for damages resulting from | |
| 15 | .\" the use of the information contained herein. The author(s) may not | |
| 16 | .\" have taken the same level of care in the production of this manual, | |
| 17 | .\" which is licensed free of charge, as they might when working | |
| 18 | .\" professionally. | |
| c13182ef | 19 | .\" |
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20 | .\" Formatted or processed versions of this manual, if unaccompanied by |
| 21 | .\" the source, must acknowledge the copyright and authors of this work. | |
| 22 | .\" | |
| 23 | .\" References consulted: | |
| 24 | .\" Linux libc source code | |
| 25 | .\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) | |
| 26 | .\" 386BSD man pages | |
| 27 | .\" Modified Sat Jul 24 17:52:15 1993 by Rik Faith (faith@cs.unc.edu) | |
| 28 | .\" Modified 2001-12-15, aeb | |
| 29 | .TH SWAB 3 2001-12-15 "" "Linux Programmer's Manual" | |
| 30 | .SH NAME | |
| 31 | swab \- swap adjacent bytes | |
| 32 | .SH SYNOPSIS | |
| 33 | .nf | |
| b80f966b | 34 | .BR "#define _XOPEN_SOURCE" " /* See feature_test_macros(7) */" |
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35 | .B #include <unistd.h> |
| 36 | .sp | |
| 37 | .BI "void swab(const void *" from ", void *" to ", ssize_t " n ); | |
| 38 | .fi | |
| 39 | .SH DESCRIPTION | |
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40 | The |
| 41 | .BR swab () | |
| 42 | function copies \fIn\fP bytes from the array pointed | |
| fea681da | 43 | to by \fIfrom\fP to the array pointed to by \fIto\fP, exchanging |
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44 | adjacent even and odd bytes. |
| 45 | This function is used to exchange data | |
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46 | between machines that have different low/high byte ordering. |
| 47 | .LP | |
| 48 | This function does nothing when \fIn\fP is negative. | |
| e17aa487 | 49 | When \fIn\fP is positive and odd, it handles \fIn\-1\fP bytes |
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50 | as above, and does something unspecified with the last byte. |
| 51 | (In other words, \fIn\fP should be even.) | |
| 47297adb | 52 | .SH RETURN VALUE |
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53 | The |
| 54 | .BR swab () | |
| 55 | function returns no value. | |
| 47297adb | 56 | .SH CONFORMING TO |
| 44a2c328 | 57 | SVr4, 4.3BSD, POSIX.1-2001. |
| 47297adb | 58 | .SH SEE ALSO |
| 0a4f8b7b | 59 | .BR bstring (3) |