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pqcrypto/crypto_sign/dilithium-iii/clean/reduce.h
2019-02-27 09:18:38 +01:00

22 lines
464 B
C

#ifndef REDUCE_H
#define REDUCE_H
#include <stdint.h>
#define MONT 4193792U // 2^32 % Q
#define QINV 4236238847U // -q^(-1) mod 2^32
/* a <= Q*2^32 => r < 2*Q */
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_montgomery_reduce(uint64_t a);
/* r < 2*Q */
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_reduce32(uint32_t a);
/* a < 2*Q => r < Q */
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_csubq(uint32_t a);
/* r < Q */
uint32_t PQCLEAN_DILITHIUMIII_CLEAN_freeze(uint32_t a);
#endif