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src/secp256k1/src/field_impl.h

/********************************************************************** /**********************************************************************
* Copyright (c) 2013, 2014 Pieter Wuille * * Copyright (c) 2013, 2014 Pieter Wuille *
* Distributed under the MIT software license, see the accompanying * * Distributed under the MIT software license, see the accompanying *
* file COPYING or http://www.opensource.org/licenses/mit-license.php.* * file COPYING or http://www.opensource.org/licenses/mit-license.php.*
**********************************************************************/ **********************************************************************/
#ifndef SECP256K1_FIELD_IMPL_H #ifndef SECP256K1_FIELD_IMPL_H
#define SECP256K1_FIELD_IMPL_H #define SECP256K1_FIELD_IMPL_H
#if defined HAVE_CONFIG_H #if defined HAVE_CONFIG_H
#include "libsecp256k1-config.h" #include "libsecp256k1-config.h"
#endif #endif
#include "util.h" #include "util.h"
#include "num.h" #include "num.h"
#if defined(USE_FIELD_10X26) #if defined(SECP256K1_WIDEMUL_INT128)
#include "field_10x26_impl.h"
#elif defined(USE_FIELD_5X52)
#include "field_5x52_impl.h" #include "field_5x52_impl.h"
#elif defined(SECP256K1_WIDEMUL_INT64)
#include "field_10x26_impl.h"
#else #else
#error "Please select field implementation" #error "Please select wide multiplication implementation"
#endif #endif
SECP256K1_INLINE static int secp256k1_fe_equal(const secp256k1_fe *a, const secp256k1_fe *b) { SECP256K1_INLINE static int secp256k1_fe_equal(const secp256k1_fe *a, const secp256k1_fe *b) {
secp256k1_fe na; secp256k1_fe na;
secp256k1_fe_negate(&na, a, 1); secp256k1_fe_negate(&na, a, 1);
secp256k1_fe_add(&na, b); secp256k1_fe_add(&na, b);
return secp256k1_fe_normalizes_to_zero(&na); return secp256k1_fe_normalizes_to_zero(&na);
} }
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