xref: /xnu-10002.1.13/libkern/libcxx_support/stdlib.h (revision 1031c584a5e37aff177559b9f69dbd3c8c3fd30a)
1*1031c584SApple OSS Distributions /*
2*1031c584SApple OSS Distributions  * Copyright (c) 2022 Apple Inc. All rights reserved.
3*1031c584SApple OSS Distributions  *
4*1031c584SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*1031c584SApple OSS Distributions  *
6*1031c584SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*1031c584SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*1031c584SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*1031c584SApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*1031c584SApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*1031c584SApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*1031c584SApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*1031c584SApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*1031c584SApple OSS Distributions  *
15*1031c584SApple OSS Distributions  * Please obtain a copy of the License at
16*1031c584SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*1031c584SApple OSS Distributions  *
18*1031c584SApple OSS Distributions  * The Original Code and all software distributed under the License are
19*1031c584SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*1031c584SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*1031c584SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*1031c584SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*1031c584SApple OSS Distributions  * Please see the License for the specific language governing rights and
24*1031c584SApple OSS Distributions  * limitations under the License.
25*1031c584SApple OSS Distributions  *
26*1031c584SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*1031c584SApple OSS Distributions  */
28*1031c584SApple OSS Distributions 
29*1031c584SApple OSS Distributions #ifndef __STDLIB_H__
30*1031c584SApple OSS Distributions #define __STDLIB_H__
31*1031c584SApple OSS Distributions 
32*1031c584SApple OSS Distributions #include <machine/trap.h>
33*1031c584SApple OSS Distributions 
34*1031c584SApple OSS Distributions typedef struct {
35*1031c584SApple OSS Distributions 	int quot;
36*1031c584SApple OSS Distributions 	int rem;
37*1031c584SApple OSS Distributions } div_t;
38*1031c584SApple OSS Distributions 
39*1031c584SApple OSS Distributions typedef struct {
40*1031c584SApple OSS Distributions 	long quot;
41*1031c584SApple OSS Distributions 	long rem;
42*1031c584SApple OSS Distributions } ldiv_t;
43*1031c584SApple OSS Distributions 
44*1031c584SApple OSS Distributions typedef struct {
45*1031c584SApple OSS Distributions 	long long quot;
46*1031c584SApple OSS Distributions 	long long rem;
47*1031c584SApple OSS Distributions } lldiv_t;
48*1031c584SApple OSS Distributions 
49*1031c584SApple OSS Distributions static inline div_t
div(int numer,int denom)50*1031c584SApple OSS Distributions div(int numer, int denom)
51*1031c584SApple OSS Distributions {
52*1031c584SApple OSS Distributions 	div_t retval;
53*1031c584SApple OSS Distributions 
54*1031c584SApple OSS Distributions 	retval.quot = numer / denom;
55*1031c584SApple OSS Distributions 	retval.rem = numer % denom;
56*1031c584SApple OSS Distributions 	if (numer >= 0 && retval.rem < 0) {
57*1031c584SApple OSS Distributions 		retval.quot++;
58*1031c584SApple OSS Distributions 		retval.rem -= denom;
59*1031c584SApple OSS Distributions 	}
60*1031c584SApple OSS Distributions 	return retval;
61*1031c584SApple OSS Distributions }
62*1031c584SApple OSS Distributions 
63*1031c584SApple OSS Distributions static inline ldiv_t
ldiv(long numer,long denom)64*1031c584SApple OSS Distributions ldiv(long numer, long denom)
65*1031c584SApple OSS Distributions {
66*1031c584SApple OSS Distributions 	ldiv_t retval;
67*1031c584SApple OSS Distributions 
68*1031c584SApple OSS Distributions 	retval.quot = numer / denom;
69*1031c584SApple OSS Distributions 	retval.rem = numer % denom;
70*1031c584SApple OSS Distributions 	if (numer >= 0 && retval.rem < 0) {
71*1031c584SApple OSS Distributions 		retval.quot++;
72*1031c584SApple OSS Distributions 		retval.rem -= denom;
73*1031c584SApple OSS Distributions 	}
74*1031c584SApple OSS Distributions 	return retval;
75*1031c584SApple OSS Distributions }
76*1031c584SApple OSS Distributions 
77*1031c584SApple OSS Distributions static inline lldiv_t
lldiv(long long numer,long long denom)78*1031c584SApple OSS Distributions lldiv(long long numer, long long denom)
79*1031c584SApple OSS Distributions {
80*1031c584SApple OSS Distributions 	lldiv_t retval;
81*1031c584SApple OSS Distributions 
82*1031c584SApple OSS Distributions 	retval.quot = numer / denom;
83*1031c584SApple OSS Distributions 	retval.rem = numer % denom;
84*1031c584SApple OSS Distributions 	if (numer >= 0 && retval.rem < 0) {
85*1031c584SApple OSS Distributions 		retval.quot++;
86*1031c584SApple OSS Distributions 		retval.rem -= denom;
87*1031c584SApple OSS Distributions 	}
88*1031c584SApple OSS Distributions 	return retval;
89*1031c584SApple OSS Distributions }
90*1031c584SApple OSS Distributions 
91*1031c584SApple OSS Distributions static inline void __attribute__((noreturn, cold))
abort(void)92*1031c584SApple OSS Distributions abort(void)
93*1031c584SApple OSS Distributions {
94*1031c584SApple OSS Distributions 	ml_fatal_trap(0x0800);
95*1031c584SApple OSS Distributions }
96*1031c584SApple OSS Distributions 
97*1031c584SApple OSS Distributions #endif
98