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feat(big): add Div

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fallenoak 2023-02-03 16:57:14 -06:00
parent 25c2ad06f1
commit 8845aa5a7f
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3 changed files with 198 additions and 0 deletions
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126
test/Big.cpp
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@ -170,6 +170,36 @@ TEST_CASE("Div", "[big]") {
SBigDel(c);
}
SECTION("divides 2 by 1 (buffer divisor)") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
BigData* c;
SBigNew(&c);
SBigFromUnsigned(c, 2);
BigData* d;
SBigNew(&d);
SBigFromUnsigned(d, 1);
Div(a->Primary(), b->Primary(), c->Primary(), d->Primary(), a->Stack());
a->Primary().Trim();
b->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 2);
CHECK(b->Primary().Count() == 0);
SBigDel(a);
SBigDel(b);
SBigDel(c);
SBigDel(d);
}
SECTION("divides 5 by 2") {
BigData* a;
SBigNew(&a);
@ -214,6 +244,37 @@ TEST_CASE("Div", "[big]") {
SBigDel(c);
}
SECTION("divides 7 by 4 (buffer divisor)") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
BigData* c;
SBigNew(&c);
SBigFromUnsigned(c, 7);
BigData* d;
SBigNew(&d);
SBigFromUnsigned(d, 4);
Div(a->Primary(), b->Primary(), c->Primary(), d->Primary(), a->Stack());
a->Primary().Trim();
b->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 1);
CHECK(b->Primary().Count() == 1);
CHECK(b->Primary()[0] == 3);
SBigDel(a);
SBigDel(b);
SBigDel(c);
SBigDel(d);
}
SECTION("divides 0x9999444488885555 by 0x2222") {
BigData* a;
SBigNew(&a);
@ -238,6 +299,39 @@ TEST_CASE("Div", "[big]") {
SBigDel(c);
}
SECTION("divides 0x9999444488885555 by 0x2222 (buffer divisor)") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
BigData* c;
SBigNew(&c);
uint64_t c_ = 0x9999444488885555;
SBigFromBinary(c, reinterpret_cast<uint8_t*>(&c_), sizeof(c_));
BigData* d;
SBigNew(&d);
SBigFromUnsigned(d, 0x2222);
Div(a->Primary(), b->Primary(), c->Primary(), d->Primary(), a->Stack());
a->Primary().Trim();
b->Primary().Trim();
CHECK(a->Primary().Count() == 2);
CHECK(a->Primary()[0] == 0x00040002);
CHECK(a->Primary()[1] == 0x48002);
CHECK(b->Primary().Count() == 1);
CHECK(b->Primary()[0] == 0x1111);
SBigDel(a);
SBigDel(b);
SBigDel(c);
SBigDel(d);
}
SECTION("divides 0x9999444488885555 by 0xFFFFFFFF") {
BigData* a;
SBigNew(&a);
@ -260,6 +354,38 @@ TEST_CASE("Div", "[big]") {
SBigDel(a);
SBigDel(c);
}
SECTION("divides 0x9999444488885555 by 0xFFFFFFFF (buffer divisor)") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
BigData* c;
SBigNew(&c);
uint64_t c_ = 0x9999444488885555;
SBigFromBinary(c, reinterpret_cast<uint8_t*>(&c_), sizeof(c_));
BigData* d;
SBigNew(&d);
SBigFromUnsigned(d, 0xFFFFFFFF);
Div(a->Primary(), b->Primary(), c->Primary(), d->Primary(), a->Stack());
a->Primary().Trim();
b->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 0x99994445);
CHECK(b->Primary().Count() == 1);
CHECK(b->Primary()[0] == 0x2221999A);
SBigDel(a);
SBigDel(b);
SBigDel(c);
SBigDel(d);
}
}
TEST_CASE("ExtractLowPart", "[big]") {