✨ (MemoryUtils): Add combineTwoBytes function

leka · May 30, 2022 · 2e32ee4 · 2e32ee4
1 parent 3286427
commit 2e32ee4
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diff --git a/libs/Utils/include/MemoryUtils.h b/libs/Utils/include/MemoryUtils.h
@@ -18,4 +18,20 @@ constexpr auto getHighByte(uint16_t value) noexcept -> uint8_t
 	return static_cast<uint8_t>(value >> 8);
 }
 
+struct TwoBytes {
+	uint8_t high {};
+	uint8_t low {};
+};
+
+constexpr auto combineBytes(TwoBytes bytes) noexcept -> uint16_t
+{
+	auto both = uint16_t {};
+
+	both = bytes.high;
+	both = both << 8;
+	both |= bytes.low;
+
+	return both;
+}
+
 }	// namespace leka::utils::memory
diff --git a/libs/Utils/tests/MemoryUtils_test.cpp b/libs/Utils/tests/MemoryUtils_test.cpp
@@ -98,3 +98,19 @@ TEST(MemoryUtilsTest, getHighByte)
 
 	ASSERT_EQ(0b1111'1111, high);
 }
+
+TEST(MemoryUtilsTest, combineTwoBytes)
+{
+	auto high = uint8_t {0xAB};
+	auto low  = uint8_t {0xCD};
+
+	auto both = combineBytes({.high = high, .low = low});
+
+	EXPECT_EQ(both, 0xABCD);
+
+	auto new_high = getHighByte(both);
+	auto new_low  = getLowByte(both);
+
+	EXPECT_EQ(new_high, high);
+	EXPECT_EQ(new_low, low);
+}