1 /* Copyright (C) 1991 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 59 Temple Place -
17 Suite 330, Boston, MA 02111-1307, USA.
19 This file was modified slightly by Ian Lance Taylor, May 1992, for
24 /* Perform a binary search for KEY in BASE which has NMEMB elements
25 of SIZE bytes each. The comparisons are done by (*COMPAR)(). */
27 bsearch (key, base, nmemb, size, compar)
28 register constpointer key;
29 register constpointer base;
32 register int (*compar) P((constpointer, constpointer));
34 register size_t l, u, idx;
35 register constpointer p;
36 register int comparison;
43 p = (constpointer) (((const char *) base) + (idx * size));
44 comparison = (*compar)(key, p);
47 else if (comparison > 0)