xref: /aosp_15_r20/external/arm-trusted-firmware/lib/libc/memchr.c (revision 54fd6939e177f8ff529b10183254802c76df6d08) 
1*54fd6939SJiyong Park /*
2*54fd6939SJiyong Park  * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
3*54fd6939SJiyong Park  *
4*54fd6939SJiyong Park  * SPDX-License-Identifier: BSD-3-Clause
5*54fd6939SJiyong Park  */
6*54fd6939SJiyong Park 
7*54fd6939SJiyong Park #include <stddef.h>
8*54fd6939SJiyong Park #include <string.h>
9*54fd6939SJiyong Park 
memchr(const void * src,int c,size_t len)10*54fd6939SJiyong Park void *memchr(const void *src, int c, size_t len)
11*54fd6939SJiyong Park {
12*54fd6939SJiyong Park 	const unsigned char *s = src;
13*54fd6939SJiyong Park 
14*54fd6939SJiyong Park 	while (len--) {
15*54fd6939SJiyong Park 		if (*s == (unsigned char)c)
16*54fd6939SJiyong Park 			return (void *) s;
17*54fd6939SJiyong Park 		s++;
18*54fd6939SJiyong Park 	}
19*54fd6939SJiyong Park 
20*54fd6939SJiyong Park 	return NULL;
21*54fd6939SJiyong Park }
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