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feat(big): add SBigShr

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fallenoak 2023-02-03 14:50:34 -06:00
parent 4a1b6a0f19
commit af0d9ec60e
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5 changed files with 202 additions and 0 deletions
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176
test/Big.cpp
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@ -855,6 +855,27 @@ TEST_CASE("SBigMul", "[big]") {
}
}
TEST_CASE("SBigShr", "[big]") {
SECTION("shifts 256 right 7 bits") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 256);
SBigShr(a, b, 7);
a->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 2);
SBigDel(a);
SBigDel(b);
}
}
TEST_CASE("SBigSquare", "[square]") {
SECTION("squares 0xFFFFFFFF") {
BigData* a;
@ -983,6 +1004,161 @@ TEST_CASE("SetZero", "[big]") {
}
}
TEST_CASE("Shr", "[big]") {
SECTION("shifts 0 right 1 bit") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 0);
Shr(a->Primary(), b->Primary(), 1);
a->Primary().Trim();
CHECK(a->Primary().Count() == 0);
SBigDel(a);
SBigDel(b);
}
SECTION("shifts 1 right 0 bits") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 1);
Shr(a->Primary(), b->Primary(), 0);
a->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 1);
SBigDel(a);
SBigDel(b);
}
SECTION("shifts 1 right 1 bit") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 1);
Shr(a->Primary(), b->Primary(), 1);
a->Primary().Trim();
CHECK(a->Primary().Count() == 0);
SBigDel(a);
SBigDel(b);
}
SECTION("shifts 2 right 1 bit") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 2);
Shr(a->Primary(), b->Primary(), 1);
a->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 1);
SBigDel(a);
SBigDel(b);
}
SECTION("shifts 2 right 1 bit") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 2);
Shr(a->Primary(), b->Primary(), 1);
a->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 1);
SBigDel(a);
SBigDel(b);
}
SECTION("shifts 256 right 7 bits") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
SBigFromUnsigned(b, 256);
Shr(a->Primary(), b->Primary(), 7);
a->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 2);
SBigDel(a);
SBigDel(b);
}
SECTION("shifts 0x1000000000000000 right 2 bits") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
uint64_t b_ = 0x1000000000000000;
SBigFromBinary(b, reinterpret_cast<uint8_t*>(&b_), sizeof(b_));
Shr(a->Primary(), b->Primary(), 2);
a->Primary().Trim();
CHECK(a->Primary().Count() == 2);
CHECK(a->Primary()[0] == 0);
CHECK(a->Primary()[1] == 0x4000000);
SBigDel(a);
SBigDel(b);
}
SECTION("shifts 0x1000000000000000 right 32 bits") {
BigData* a;
SBigNew(&a);
BigData* b;
SBigNew(&b);
uint64_t b_ = 0x1000000000000000;
SBigFromBinary(b, reinterpret_cast<uint8_t*>(&b_), sizeof(b_));
Shr(a->Primary(), b->Primary(), 32);
a->Primary().Trim();
CHECK(a->Primary().Count() == 1);
CHECK(a->Primary()[0] == 0x10000000);
SBigDel(a);
SBigDel(b);
}
}
TEST_CASE("Square", "[big]") {
SECTION("squares 0") {
BigData* a;