70 lines
3.1 KiB
C
70 lines
3.1 KiB
C
/*******************************************************************************
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* Ledger Blue
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* (c) 2016 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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typedef struct uint128_t { uint64_t elements[2]; } uint128_t;
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typedef struct uint256_t { uint128_t elements[2]; } uint256_t;
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#define UPPER_P(x) x->elements[0]
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#define LOWER_P(x) x->elements[1]
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#define UPPER(x) x.elements[0]
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#define LOWER(x) x.elements[1]
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void readu128BE(uint8_t *buffer, uint128_t *target);
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void readu256BE(uint8_t *buffer, uint256_t *target);
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bool zero128(uint128_t *number);
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bool zero256(uint256_t *number);
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void copy128(uint128_t *target, uint128_t *number);
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void copy256(uint256_t *target, uint256_t *number);
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void clear128(uint128_t *target);
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void clear256(uint256_t *target);
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void shiftl128(uint128_t *number, uint32_t value, uint128_t *target);
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void shiftr128(uint128_t *number, uint32_t value, uint128_t *target);
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void shiftl256(uint256_t *number, uint32_t value, uint256_t *target);
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void shiftr256(uint256_t *number, uint32_t value, uint256_t *target);
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uint32_t bits128(uint128_t *number);
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uint32_t bits256(uint256_t *number);
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bool equal128(uint128_t *number1, uint128_t *number2);
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bool equal256(uint256_t *number1, uint256_t *number2);
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bool gt128(uint128_t *number1, uint128_t *number2);
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bool gt256(uint256_t *number1, uint256_t *number2);
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bool gte128(uint128_t *number1, uint128_t *number2);
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bool gte256(uint256_t *number1, uint256_t *number2);
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void add128(uint128_t *number1, uint128_t *number2, uint128_t *target);
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void add256(uint256_t *number1, uint256_t *number2, uint256_t *target);
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void minus128(uint128_t *number1, uint128_t *number2, uint128_t *target);
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void minus256(uint256_t *number1, uint256_t *number2, uint256_t *target);
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void or128(uint128_t *number1, uint128_t *number2, uint128_t *target);
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void or256(uint256_t *number1, uint256_t *number2, uint256_t *target);
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void mul128(uint128_t *number1, uint128_t *number2, uint128_t *target);
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void mul256(uint256_t *number1, uint256_t *number2, uint256_t *target);
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void divmod128(uint128_t *l, uint128_t *r, uint128_t *div, uint128_t *mod);
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void divmod256(uint256_t *l, uint256_t *r, uint256_t *div, uint256_t *mod);
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bool tostring128(uint128_t *number, uint32_t base, char *out,
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uint32_t outLength);
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bool tostring256(uint256_t *number, uint32_t base, char *out,
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uint32_t outLength);
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#endif /* _UINT256_H_ */ |