A decent C string hashing function

cstr_hash.c

#include <stddef.h>

// sdbm from here:
// http://www.cse.yorku.ca/~oz/hash.html
static size_t cstr_hash(const char *str)
{
    size_t hash = 0;
    int c;
    while ((c = *str++))
        hash = c + (hash << 6) + (hash << 16) - hash;
    return hash;
}