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feat(big): add Mul

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fallenoak 2023-01-29 22:59:28 -06:00 • committed by GitHub
parent 33585cb36f
commit e74654800d
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3 changed files with 75 additions and 0 deletions
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60
test/Big.cpp
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@ -54,6 +54,66 @@ TEST_CASE("ExtractLowPartSx", "[big]") {
}
}
TEST_CASE("Mul", "[big]") {
SECTION("multiplies 0 and 1") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 0);
uint64_t c = 1;
Mul(a->Primary(), b->Primary(), c);
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 0);
SBigDel(a);
SBigDel(b);
}
SECTION("multiplies 2 and 4") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 2);
uint64_t c = 4;
Mul(a->Primary(), b->Primary(), c);
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 8);
SBigDel(a);
SBigDel(b);
}
SECTION("multiplies 0xFFFFFFFF and 0x100") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 0xFFFFFFFF);
uint64_t c = 0x100;
Mul(a->Primary(), b->Primary(), c);
CHECK(a->Primary().Count() == 2);
CHECK(a->Primary()[0] == 0xFFFFFF00);
CHECK(a->Primary()[1] == 0xFF);
SBigDel(a);
SBigDel(b);
}
}
TEST_CASE("MakeLarge", "[big]") {
SECTION("creates uint64_t out of 0xAABBCCDD and 0x11223344") {
uint64_t value = MakeLarge(0xAABBCCDD, 0x11223344);