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feat(big): add SBigMul

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fallenoak 2023-01-30 00:10:52 -06:00 • committed by GitHub
parent e74654800d
commit 6e96e0a767
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11 changed files with 179 additions and 0 deletions
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99
test/Big.cpp
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@ -270,6 +270,105 @@ TEST_CASE("SBigFromUnsigned", "[big]") {
}
}
TEST_CASE("SBigMul", "[big]") {
SECTION("multiplies 0 and 1") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 0);
BigData* c;
SBigNew(&c);
SBigFromUnsigned(c, 1);
SBigMul(a, b, c);
a->Primary().Trim();
CHECK(a->Primary().Count() == 0);
SBigDel(a);
SBigDel(b);
SBigDel(c);
}
SECTION("multiplies 2 and 4") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 2);
BigData* c;
SBigNew(&c);
SBigFromUnsigned(c, 4);
SBigMul(a, b, c);
a->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 8);
SBigDel(a);
SBigDel(b);
SBigDel(c);
}
SECTION("multiplies 0xFFFFFFFF and 0x100") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 0xFFFFFFFF);
BigData* c;
SBigNew(&c);
SBigFromUnsigned(c, 0x100);
SBigMul(a, b, c);
a->Primary().Trim();
CHECK(a->Primary().Count() == 2);
CHECK(a->Primary()[0] == 0xFFFFFF00);
CHECK(a->Primary()[1] == 0xFF);
SBigDel(a);
SBigDel(b);
SBigDel(c);
}
SECTION("multiplies 0xFFFFFF and 0x11223344") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 0xFFFFFF);
BigData* c;
SBigNew(&c);
SBigFromUnsigned(c, 0x11223344);
SBigMul(a, b, c);
a->Primary().Trim();
CHECK(a->Primary().Count() == 2);
CHECK(a->Primary()[0] == 0x32DDCCBC);
CHECK(a->Primary()[1] == 0x112233);
SBigDel(a);
SBigDel(b);
SBigDel(c);
}
}
TEST_CASE("SBigToBinaryBuffer", "[big]") {
SECTION("returns expected buffer for bigdata representing 0") {
BigData* num;