hashes.c

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/* ************************************************************************** */
/*      ____    _    _____ ____     _    _   _   _____ _  _   ____  ____      */
/*     / ___|  / \  |  ___|  _ \   / \  | \ | | |_   _| || | |  _ \/ ___|     */
/*     \___ \ / _ \ | |_  | |_) | / _ \ |  \| |   | | | || |_| | | \___ \     */
/*      ___) / ___ \|  _| |  _ < / ___ \| |\  |   | | |__   _| |_| |___) |    */
/*     |____/_/   \_|_|   |_| \_/_/   \_|_| \_|   |_|    |_| |____/|____/     */
/* ************************************************************************** */
 
#include "o2s/private_prepro.h" // FNV1A_*
#include "o2s/string.h"

uint32_t cstring_fnv1a_32(const char* cstring, size_t length)
{
    uint32_t c;
    uint32_t hash;
 
    hash = FNV1A_0();
    while (length --> 0)
    {
        c = (unsigned char)*cstring++;
        hash ^= c;
        hash *= FNV1A_F;
    }
    return hash;
}

uint32_t string_fnv1a_32(const string_t* self)
{
    return cstring_fnv1a_32(string_get(self, 0), string_length(self));
}