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#include "byte.h"
/* byte_chr returns the smallest integer i between 0 and len-1
* inclusive such that one[i] equals needle, or len if not found. */
size_t byte_chr(const void* haystack, size_t len, char needle) {
register char c=needle;
register const char* s=haystack;
register const char* t=s+len;
for (;;) {
if (s==t) break; if (*s==c) break; ++s;
if (s==t) break; if (*s==c) break; ++s;
if (s==t) break; if (*s==c) break; ++s;
if (s==t) break; if (*s==c) break; ++s;
}
return (size_t)(s-(const char*)haystack);
}