char *my_strchrnul(const char *s, int c)
{
size_t *w, k;
c = (unsigned char)c;
if (!c) return (char *)s + my_strlen(s);
for (; (uintptr_t)s % ALIGN; s++)
if (!*s || *(unsigned char *)s == c) return (char *)s;
k = ONES * c;
for (w = (void *)s; !HASZERO(*w) && !HASZERO(*w^k); w++);
for (s = (void *)w; *s && *(unsigned char *)s != c; s++);
return (char *)s;
}
size_t strlen(const char *s)
{
const char *a = s;
const size_t *w;
for (; (uintptr_t)s % ALIGN; s++) if (!*s) return s-a;
for (w = (const void *)s; !HASZERO(*w); w++);
for (s = (const void *)w; *s; s++);
return s-a;
}
size_t strlen(const char *s)
{
const char *a = s;
const size_t *w;
for (; ((uintptr_t)s & ALIGN) && *s; s++);
if (*s) {
for (w = (const void *)s; !HASZERO(*w); w++);
for (s = (const void *)w; *s; s++);
}
return s-a;
}
size_t strlen(const char *s)
{
const char *a = s;
#ifdef __GNUC__
typedef size_t __attribute__((__may_alias__)) word;
const word *w;
for (; (uintptr_t)s % ALIGN; s++) if (!*s) return s-a;
for (w = (const void *)s; !HASZERO(*w); w++);
s = (const void *)w;
#endif
for (; *s; s++);
return s-a;
}
void *memchr(const void *src, int c, size_t n)
{
const unsigned char *s = src;
c = (unsigned char)c;
for (; ((uintptr_t)s & ALIGN) && n && *s != c; s++, n--);
if (n && *s != c) {
const size_t *w;
size_t k = ONES * c;
for (w = (const void *)s; n>=SS && !HASZERO(*w^k); w++, n-=SS);
for (s = (const void *)w; n && *s != c; s++, n--);
}
return n ? (void *)s : 0;
}
char *__stpcpy(char *d, const char *s)
{
size_t *wd;
const size_t *ws;
if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) {
for (; (*d=*s) && ((uintptr_t)s & ALIGN); s++, d++);
if (!*s) return d;
wd=(void *)d; ws=(const void *)s;
for (; !HASZERO(*ws); *wd++ = *ws++);
d=(void *)wd; s=(const void *)ws;
}
for (; (*d=*s); s++, d++);
return d;
}
char *__stpncpy(char *d, const char *s, size_t n)
{
size_t *wd;
const size_t *ws;
if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) {
for (; ((uintptr_t)s & ALIGN) && n && (*d=*s); n--, s++, d++);
if (!n || !*s) goto tail;
wd=(void *)d; ws=(const void *)s;
for (; n>=sizeof(size_t) && !HASZERO(*ws);
n-=sizeof(size_t), ws++, wd++) *wd = *ws;
d=(void *)wd; s=(const void *)ws;
}
for (; n && (*d=*s); n--, s++, d++);
tail:
memset(d, 0, n);
return d;
}
size_t strlcpy(char *d, const char *s, size_t n)
{
char *d0 = d;
size_t *wd;
const size_t *ws;
if (!n--) goto finish;
if (((uintptr_t)s & ALIGN) == ((uintptr_t)d & ALIGN)) {
for (; ((uintptr_t)s & ALIGN) && n && (*d=*s); n--, s++, d++);
if (n && *s) {
wd=(void *)d; ws=(const void *)s;
for (; n>=sizeof(size_t) && !HASZERO(*ws);
n-=sizeof(size_t), ws++, wd++) *wd = *ws;
d=(void *)wd; s=(const void *)ws;
}
}
for (; n && (*d=*s); n--, s++, d++);
*d = 0;
finish:
return d-d0 + strlen(s);
}
