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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2021 Oxide Computer Company
*/
/*
* memrchr(3C) implementation. Find the first occurence of 'c' as an unsigned
* char in 's', by searching in reverse.
*/
#include <string.h>
void *
memrchr(const void *s, int c, size_t len)
{
unsigned char val = (unsigned char)c;
const unsigned char *data = s;
for (; len > 0; len--) {
size_t pos = len - 1;
if (data[pos] == val) {
return ((void *)&data[pos]);
}
}
return (NULL);
}
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