void siphash24_init(struct siphash *state, const uint8_t k[16]);
void siphash24_compress(const void *in, size_t inlen, struct siphash *state);
+#define siphash24_compress_byte(byte, state) siphash24_compress((const uint8_t[]) { (byte) }, 1, (state))
+
uint64_t siphash24_finalize(struct siphash *state);
uint64_t siphash24(const void *in, size_t inlen, const uint8_t k[16]);