46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
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#include <gtest/gtest.h>
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#include "uint256_t.h"
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TEST(Arithmetic, modulo){
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// has remainder
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const uint256_t val (0xffffffffffffffffULL, 0xffffffffffffffffULL, 0xffffffffffffffffULL, 0xffffffffffffffffULL);
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const uint256_t val_mod(0xfedcba9876543210ULL);
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EXPECT_EQ(val % val_mod, uint256_t(0x63794f9d55c8d29f));
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// no remainder
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const uint256_t val_0 (0xfedcba9876543210, 0, 0, 0);
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EXPECT_EQ(val_0 % val_mod, 0);
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// mod 0
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EXPECT_THROW(uint256_t(1) % uint256_t(0), std::domain_error);
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}
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TEST(External, modulo){
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bool t = true;
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bool f = false;
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uint8_t u8 = 0xaaULL;
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uint16_t u16 = 0xaaaaULL;
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uint32_t u32 = 0xaaaaaaaaULL;
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uint64_t u64 = 0xaaaaaaaaaaaaaaaaULL;
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uint128_t u128 (0xaaaaaaaaaaaaaaaaULL, 0xaaaaaaaaaaaaaaaaULL);
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const uint256_t val(0xd03ULL); // prime
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EXPECT_EQ(t % val, true);
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EXPECT_EQ(f % val, false);
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EXPECT_EQ(u8 % val, uint256_t(0xaaULL));
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EXPECT_EQ(u16 % val, uint256_t(0x183ULL));
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EXPECT_EQ(u32 % val, uint256_t(0x249ULL));
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EXPECT_EQ(u64 % val, uint256_t(0xc7fULL));
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EXPECT_EQ(u128 % val, uint256_t(0x9fbULL));
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EXPECT_EQ(t %= val, true);
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EXPECT_EQ(f %= val, false);
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EXPECT_EQ(u8 %= val, (uint8_t) 0xaaULL);
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EXPECT_EQ(u16 %= val, (uint16_t) 0x183ULL);
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EXPECT_EQ(u32 %= val, (uint32_t) 0x249ULL);
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EXPECT_EQ(u64 %= val, (uint64_t) 0xc7fULL);
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EXPECT_EQ(u128 %= val, (uint256_t) 0x9fbULL);
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}
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