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feat(big): add 64-bit-centric ops

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fallenoak 2023-01-23 22:10:24 -06:00 • committed by GitHub
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commit d3fd03d67e
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test/Big.cpp Normal file
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#include "storm/big/Ops.hpp"
#include "test/Test.hpp"
TEST_CASE("ExtractLowPart", "[big]") {
SECTION("extracts low part of 0") {
uint64_t value = 0;
auto low = ExtractLowPart(value);
REQUIRE(low == 0);
REQUIRE(value == 0);
}
SECTION("extracts low part of 0x12345678") {
uint64_t value = 0x12345678;
auto low = ExtractLowPart(value);
REQUIRE(low == 0x12345678);
REQUIRE(value == 0);
}
SECTION("extracts low part of 0xAAAABBBBCCCCDDDD") {
uint64_t value = 0xAAAABBBBCCCCDDDD;
auto low = ExtractLowPart(value);
REQUIRE(low == 0xCCCCDDDD);
REQUIRE(value == 0xAAAABBBB);
}
}
TEST_CASE("ExtractLowPartSx", "[big]") {
SECTION("extracts low part of 0") {
uint64_t value = 0;
auto low = ExtractLowPartSx(value);
REQUIRE(low == 0);
REQUIRE(value == 0);
}
SECTION("extracts low part of 0x12345678") {
uint64_t value = 0x12345678;
auto low = ExtractLowPartSx(value);
REQUIRE(low == 0x12345678);
REQUIRE(value == 0);
}
SECTION("extracts low part of 0xAAAABBBBCCCCDDDD") {
uint64_t value = 0xAAAABBBBCCCCDDDD;
auto low = ExtractLowPartSx(value);
REQUIRE(low == 0xCCCCDDDD);
REQUIRE(value == 0xFFFFFFFFAAAABBBB);
}
}
TEST_CASE("MakeLarge", "[big]") {
SECTION("creates uint64_t out of 0xAABBCCDD and 0x11223344") {
uint64_t value = MakeLarge(0xAABBCCDD, 0x11223344);
REQUIRE(value == 0x11223344AABBCCDD);
}
SECTION("creates uint64_t out of 0 and 0x11223344") {
uint64_t value = MakeLarge(0x00000000, 0x11223344);
REQUIRE(value == 0x1122334400000000);
}
}