1 /* 2 * Copyright (C) 2017 - This file is part of libecc project 3 * 4 * Authors: 5 * Ryad BENADJILA <ryadbenadjila@gmail.com> 6 * Arnaud EBALARD <arnaud.ebalard@ssi.gouv.fr> 7 * Jean-Pierre FLORI <jean-pierre.flori@ssi.gouv.fr> 8 * 9 * Contributors: 10 * Nicolas VIVET <nicolas.vivet@ssi.gouv.fr> 11 * Karim KHALFALLAH <karim.khalfallah@ssi.gouv.fr> 12 * 13 * This software is licensed under a dual BSD and GPL v2 license. 14 * See LICENSE file at the root folder of the project. 15 */ 16 #ifndef __NN_DIV_PUBLIC_H__ 17 #define __NN_DIV_PUBLIC_H__ 18 #include <libecc/nn/nn.h> 19 20 /* Compute quotient q and remainder r for given a and b such that a = q*b + r */ 21 ATTRIBUTE_WARN_UNUSED_RET int nn_divrem(nn_t q, nn_t r, nn_src_t a, nn_src_t b); 22 23 /* Compute r = a mod b */ 24 ATTRIBUTE_WARN_UNUSED_RET int nn_mod(nn_t r, nn_src_t a, nn_src_t b); 25 26 /* Compute gcd of a and b */ 27 ATTRIBUTE_WARN_UNUSED_RET int nn_gcd(nn_t d, nn_src_t a, nn_src_t b, int *sign); 28 ATTRIBUTE_WARN_UNUSED_RET int nn_xgcd(nn_t g, nn_t u, nn_t v, nn_src_t a, nn_src_t b, int *sign); 29 30 #endif /* __NN_DIV_PUBLIC_H__ */ 31