39 lines
1.5 KiB
Nim
39 lines
1.5 KiB
Nim
# Constantine
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# Copyright (c) 2018-2019 Status Research & Development GmbH
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# Copyright (c) 2020-Present Mamy André-Ratsimbazafy
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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# Standard library
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unittest, random, strutils,
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# Third-party
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../constantine/[io, bigints, primitives]
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suite "Bigints - Multiprecision modulo":
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test "bitsize 237 mod bitsize 192":
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let a = BigInt[237].fromHex("0x123456789012345678901234567890123456789012345678901234567890")
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let m = BigInt[192].fromHex("0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB")
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let expected = BigInt[192].fromHex("0x34567890123456789012345678901234567886f8091a3087")
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var r: BigInt[192]
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r.reduce(a, m)
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check:
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bool(r == expected)
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test "bitsize 365 mod bitsize 258":
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let a = BigInt[365].fromHex("0x6c8ae85a6cab4bc530b91177e3f399894ff1fe335b6b3fcdc577ea4f8d754bbe71a6353e8609a4769ec8c56727a")
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let m = BigInt[258].fromHex("0x2cadadfa2bb7d7141ad9728d6955ddb68a8b81ecb6a7610575bf4d6f562b09f0d")
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let expected = BigInt[258].fromHex("0xb7c8844f534bf298645dc118384e975245c1a44ba4b0bca8a04c9db0c9035b9")
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var r: BigInt[258]
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r.reduce(a, m)
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check:
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bool(r == expected)
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