xref: /xnu-12377.81.4/bsd/kern/qsort.h (revision 043036a2b3718f7f0be807e2870f8f47d3fa0796)
1*043036a2SApple OSS Distributions /*
2*043036a2SApple OSS Distributions  * Copyright (c) 2024 Apple Inc. All rights reserved.
3*043036a2SApple OSS Distributions  *
4*043036a2SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*043036a2SApple OSS Distributions  *
6*043036a2SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*043036a2SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*043036a2SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*043036a2SApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*043036a2SApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*043036a2SApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*043036a2SApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*043036a2SApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*043036a2SApple OSS Distributions  *
15*043036a2SApple OSS Distributions  * Please obtain a copy of the License at
16*043036a2SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*043036a2SApple OSS Distributions  *
18*043036a2SApple OSS Distributions  * The Original Code and all software distributed under the License are
19*043036a2SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*043036a2SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*043036a2SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*043036a2SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*043036a2SApple OSS Distributions  * Please see the License for the specific language governing rights and
24*043036a2SApple OSS Distributions  * limitations under the License.
25*043036a2SApple OSS Distributions  *
26*043036a2SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*043036a2SApple OSS Distributions  */
28*043036a2SApple OSS Distributions 
29*043036a2SApple OSS Distributions #ifndef _KERN_QSORT_H_
30*043036a2SApple OSS Distributions #define _KERN_QSORT_H_
31*043036a2SApple OSS Distributions 
32*043036a2SApple OSS Distributions #include <stddef.h>
33*043036a2SApple OSS Distributions 
34*043036a2SApple OSS Distributions __BEGIN_DECLS
35*043036a2SApple OSS Distributions 
36*043036a2SApple OSS Distributions /*
37*043036a2SApple OSS Distributions  * The `cmpfunc_t` type is a pointer to a function that should return the
38*043036a2SApple OSS Distributions  * following:
39*043036a2SApple OSS Distributions  *
40*043036a2SApple OSS Distributions  * return < 0 for a < b
41*043036a2SApple OSS Distributions  *          0 for a == b
42*043036a2SApple OSS Distributions  *        > 0 for a > b
43*043036a2SApple OSS Distributions  */
44*043036a2SApple OSS Distributions typedef int (*cmpfunc_t)(const void *a, const void *b);
45*043036a2SApple OSS Distributions 
46*043036a2SApple OSS Distributions __private_extern__
47*043036a2SApple OSS Distributions void
48*043036a2SApple OSS Distributions qsort(void *array, size_t num_elements, size_t element_size, cmpfunc_t compare);
49*043036a2SApple OSS Distributions 
50*043036a2SApple OSS Distributions __END_DECLS
51*043036a2SApple OSS Distributions 
52*043036a2SApple OSS Distributions #endif /* _KERN_QSORT_H_ */
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