QSORT.3
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上传日期:2007-02-01
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操作系统开发
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C/C++
- ." Copyright (c) 1980 Regents of the University of California.
- ." All rights reserved. The Berkeley software License Agreement
- ." specifies the terms and conditions for redistribution.
- ."
- ." @(#)qsort.3 6.1 (Berkeley) 5/15/85
- ."
- .TH QSORT 3 "May 15, 1985"
- .UC 4
- .SH NAME
- qsort - quicker sort
- .SH SYNOPSIS
- .nf
- .ft B
- #include <sys/types.h>
- #include <stdlib.h>
- .fi
- .in +.5i
- .ti -.5i
- void qsort(void *fIbasefP, size_t fInelfP, size_t fIwidthfP, int (*fIcomparfP)(const void *, const void *))
- .in -.5i
- .ft R
- .SH DESCRIPTION
- .B Qsort
- is an implementation of the quicker-sort algorithm.
- The first argument is a pointer to the base of the data;
- the second is the number of elements;
- the third is the width of an element in bytes;
- the last is the name of the comparison routine
- to be called with two arguments which are pointers
- to the elements being compared.
- The routine must return an integer less than, equal to, or greater than 0
- according as the first argument is to be considered
- less than, equal to, or greater than the second.
- .SH "SEE ALSO"
- .BR sort (1).