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diff --git a/man3/qsort.3 b/man3/qsort.3 new file mode 100644 index 000000000..eecca1629 --- /dev/null +++ b/man3/qsort.3 @@ -0,0 +1,76 @@ +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" Permission is granted to make and distribute verbatim copies of this +.\" manual provided the copyright notice and this permission notice are +.\" preserved on all copies. +.\" +.\" Permission is granted to copy and distribute modified versions of this +.\" manual under the conditions for verbatim copying, provided that the +.\" entire resulting derived work is distributed under the terms of a +.\" permission notice identical to this one. +.\" +.\" Since the Linux kernel and libraries are constantly changing, this +.\" manual page may be incorrect or out-of-date. The author(s) assume no +.\" responsibility for errors or omissions, or for damages resulting from +.\" the use of the information contained herein. The author(s) may not +.\" have taken the same level of care in the production of this manual, +.\" which is licensed free of charge, as they might when working +.\" professionally. +.\" +.\" Formatted or processed versions of this manual, if unaccompanied by +.\" the source, must acknowledge the copyright and authors of this work. +.\" +.\" References consulted: +.\" Linux libc source code +.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) +.\" 386BSD man pages +.\" +.\" Modified 1993-03-29, David Metcalfe +.\" Modified 1993-07-24, Rik Faith (faith@cs.unc.edu) +.\" +.TH QSORT 3 2003-11-15 "" "Linux Programmer's Manual" +.SH NAME +qsort \- sorts an array +.SH SYNOPSIS +.nf +.B #include <stdlib.h> +.sp +.BI "void qsort(void *" base ", size_t " nmemb ", size_t " size , +.in +\w'void qsort('u +.BI "int(*" compar ")(const void *, const void *));" +.in +.fi +.SH DESCRIPTION +The \fBqsort()\fP function sorts an array with \fInmemb\fP elements of +size \fIsize\fP. The \fIbase\fP argument points to the start of the +array. +.PP +The contents of the array are sorted in ascending order according to a +comparison function pointed to by \fIcompar\fP, which is called with two +arguments that point to the objects being compared. +.PP +The comparison function must return an integer less than, equal to, or +greater than zero if the first argument is considered to be respectively +less than, equal to, or greater than the second. If two members compare +as equal, their order in the sorted array is undefined. +.SH "RETURN VALUE" +The \fBqsort()\fP function returns no value. +.SH "CONFORMING TO" +SVID 3, POSIX, BSD 4.3, ISO 9899 +.SH NOTE +Library routines suitable for use as the +.I compar +argument include +.IR strcmp , +.IR alphasort , +and +.IR versionsort . +.SH EXAMPLE +For an example of use, see the example on the +.BR bsearch (3) +page. +.SH "SEE ALSO" +.BR sort (1), +.BR alphasort (3), +.BR strcmp (3), +.BR versionsort (3) |