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/* See LICENSE file for copyright and license details. */
#include "libsimple.h"
#ifndef TEST
size_t
libsimple_memreqlen(const void *a_, size_t n, const void *b_, size_t m)
{
const char *a = &((const char *)a_)[n];
const char *b = &((const char *)b_)[m];
size_t i = 0, len = n < m ? n : m;
for (; i < len && *--a == *--b; i++);
return i;
}
#else
#include "test.h"
int
main(void)
{
char s[] = "abcdefgh", t[] = "abcdefgh";
size_t i, j;
assert(libsimple_memreqlen("x", 0, "x", 0) == 0);
assert(libsimple_memreqlen("x", 1, "x", 0) == 0);
assert(libsimple_memreqlen("x", 1, "y", 1) == 0);
assert(libsimple_memreqlen("y", 0, "y", 1) == 0);
for (i = 0; i <= 8; i++) {
for (j = 0; j <= 8; j++) {
assert(libsimple_memreqlen(&s[i], 8 - i, &t[j], 8 - j) == 8 - (i > j ? i : j));
assert(libsimple_memreqlen(s, i, t, j) == (i == j ? i : 0));
}
}
assert(libsimple_memreqlen("abc", 3, "ABC", 3) == 0);
assert(libsimple_memreqlen("123", 3, "123", 3) == 3);
return 0;
}
#endif
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