aboutsummaryrefslogtreecommitdiffstats
path: root/rawmemrcasechr.c
blob: de33b8fff0464bf325d54e6d77cfbb5254462d0a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
/* See LICENSE file for copyright and license details. */
#include "libsimple.h"
#ifndef TEST


void *
libsimple_rawmemrcasechr(const void *s_, int c, size_t n)
{
	char *s = *(char **)(void *)&s_;
	c = tolower(c);
	do {
		n--;
	} while (tolower(s[n]) != c);
	return &s[n];
}


#else
#include "test.h"

int
main(void)
{
	assert(!strcmpnul(libsimple_rawmemrcasechr("abcABCabcABC", 'a', sizeof("abcABCabcABC") - 1), "ABC"));
	assert(!strcmpnul(libsimple_rawmemrcasechr("abcABCabcABC", 'c', sizeof("abcABCabcABC") - 1), "C"));
	assert(!strcmpnul(libsimple_rawmemrcasechr("abcABCabcABC", 'A', sizeof("abcABCabcABC") - 1), "ABC"));
	assert(!strcmpnul(libsimple_rawmemrcasechr("abcABCabcABC", 'C', sizeof("abcABCabcABC") - 1), "C"));
	assert(!strcmpnul(libsimple_rawmemrcasechr("ABCabcABCabc", 'a', sizeof("ABCabcABCabc") - 1), "abc"));
	assert(!strcmpnul(libsimple_rawmemrcasechr("ABCabcABCabc", 'c', sizeof("ABCabcABCabc") - 1), "c"));
	assert(!strcmpnul(libsimple_rawmemrcasechr("ABCabcABCabc", 'A', sizeof("ABCabcABCabc") - 1), "abc"));
	assert(!strcmpnul(libsimple_rawmemrcasechr("ABCabcABCabc", 'C', sizeof("ABCabcABCabc") - 1), "c"));
	return 0;
}

#endif