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/* See LICENSE file for copyright and license details. */
#include "libsimple.h"
#ifndef TEST
void *
libsimple_memreplaceelem(void *restrict s_, const void *old_, const void *new_, size_t n, size_t width) /* TODO test, man */
{
switch (width) {
case 0:
return s_;
case 1:
{
uint8_t *restrict s = s_;
uint8_t old = *(const uint8_t *)old_;
uint8_t new = *(const uint8_t *)new_;
for (; n; s++, n--)
if (*s == old)
*s = new;
return s;
}
case 2:
{
uint16_t *restrict s = s_;
uint16_t old = *(const uint16_t *)old_;
uint16_t new = *(const uint16_t *)new_;
for (; n; s++, n--)
if (*s == old)
*s = new;
return s;
}
case 4:
{
uint32_t *restrict s = s_;
uint32_t old = *(const uint32_t *)old_;
uint32_t new = *(const uint32_t *)new_;
for (; n; s++, n--)
if (*s == old)
*s = new;
return s;
}
case 8:
{
uint64_t *restrict s = s_;
uint64_t old = *(const uint64_t *)old_;
uint64_t new = *(const uint64_t *)new_;
for (; n; s++, n--)
if (*s == old)
*s = new;
return s;
}
default:
{
char *restrict s = s_;
const char *old = old_;
const char *new = new_;
size_t i;
for (; n; s += width, n--) {
if (*s == *old) {
for (i = 0; i < width; i++)
if (s[i] != old[i])
goto next;
for (i = 0; i < width; i++)
s[i] = new[i];
}
next:;
}
return s;
}
}
}
#else
#include "test.h"
int
main(void)
{
return 0;
}
#endif
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