glibc/string/tst-strlen.c
Ulrich Drepper 24fb0f88ed Add optimized x86-64 implementation of strnlen.
While at it, beef up the test suite for strnlen and add performance
tests for it, too.
2010-07-26 08:37:08 -07:00

56 lines
1.3 KiB
C

/* Make sure we don't test the optimized inline functions if we want to
test the real implementation. */
#undef __USE_STRING_INLINES
#include <stdio.h>
#include <string.h>
int
main(int argc, char *argv[])
{
static const size_t lens[] = { 0, 1, 0, 2, 0, 1, 0, 3,
0, 1, 0, 2, 0, 1, 0, 4 };
char basebuf[24 + 32];
size_t base;
for (base = 0; base < 32; ++base)
{
char *buf = basebuf + base;
size_t words;
for (words = 0; words < 4; ++words)
{
size_t last;
memset (buf, 'a', words * 4);
for (last = 0; last < 16; ++last)
{
buf[words * 4 + 0] = (last & 1) != 0 ? 'b' : '\0';
buf[words * 4 + 1] = (last & 2) != 0 ? 'c' : '\0';
buf[words * 4 + 2] = (last & 4) != 0 ? 'd' : '\0';
buf[words * 4 + 3] = (last & 8) != 0 ? 'e' : '\0';
buf[words * 4 + 4] = '\0';
if (strlen (buf) != words * 4 + lens[last])
{
printf ("\
strlen failed for base=%Zu, words=%Zu, and last=%Zu (is %zd, expected %zd)\n",
base, words, last,
strlen (buf), words * 4 + lens[last]);
return 1;
}
if (strnlen (buf, -1) != words * 4 + lens[last])
{
printf ("\
strnlen failed for base=%Zu, words=%Zu, and last=%Zu (is %zd, expected %zd)\n",
base, words, last,
strnlen (buf, -1), words * 4 + lens[last]);
return 1;
}
}
}
}
return 0;
}