63 lines
2.6 KiB
C
63 lines
2.6 KiB
C
/*******************************************************************************
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* Ledger Ethereum App
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* (c) 2016-2019 Ledger
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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********************************************************************************/
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// Adapted from https://github.com/calccrypto/uint256_t
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#ifndef _UINT256_H_
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#define _UINT256_H_
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#include <stdint.h>
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#include <stdbool.h>
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#include "uint128.h"
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typedef struct uint256_t {
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uint128_t elements[2];
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} uint256_t;
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void readu256BE(const uint8_t *const buffer, uint256_t *const target);
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bool zero256(const uint256_t *const number);
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void copy256(uint256_t *const target, const uint256_t *const number);
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void clear256(uint256_t *const target);
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void shiftl256(const uint256_t *const number, uint32_t value, uint256_t *const target);
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void shiftr256(const uint256_t *const number, uint32_t value, uint256_t *const target);
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uint32_t bits256(const uint256_t *const number);
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bool equal256(const uint256_t *const number1, const uint256_t *const number2);
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bool gt256(const uint256_t *const number1, const uint256_t *const number2);
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bool gte256(const uint256_t *const number1, const uint256_t *const number2);
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void add256(const uint256_t *const number1,
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const uint256_t *const number2,
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uint256_t *const target);
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void sub256(const uint256_t *const number1,
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const uint256_t *const number2,
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uint256_t *const target);
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void or256(const uint256_t *const number1, const uint256_t *const number2, uint256_t *const target);
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void mul256(const uint256_t *const number1,
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const uint256_t *const number2,
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uint256_t *const target);
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void divmod256(const uint256_t *const l,
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const uint256_t *const r,
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uint256_t *const div,
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uint256_t *const mod);
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bool tostring256(const uint256_t *const number, uint32_t base, char *const out, uint32_t outLength);
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bool tostring256_signed(const uint256_t *const number,
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uint32_t base,
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char *const out,
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uint32_t out_length);
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#endif // _UINT256_H_
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