/*
Combine two 32‑bit unsigned integers into one 64‑bit unsigned integer.
- The high 32 bits are shifted left by 32 positions.
- The low 32 bits are OR'ed into the lower half.
*/
import Foundation
// Function that combines two UInt32 values into a single UInt64.
//
// Explanation:
// - Convert `high` to UInt64 so it can be shifted safely.
// - Shift it left by 32 bits to place it in the upper half.
// - Convert `low` to UInt64 and OR it into the lower half.
func combineTwo32bit(high: UInt32, low: UInt32) -> UInt64 {
return (UInt64(high) << 32) | UInt64(low)
}
// Function that prints a UInt64 in uppercase hexadecimal
// with leading zeros.
func printHex64(_ value: UInt64) {
print(String(format: "0x%016lX", value))
}
func main() {
let high: UInt32 = 0x11223344 // Example high 32 bits
let low: UInt32 = 0x55667788 // Example low 32 bits
let combined = combineTwo32bit(high: high, low: low)
print(String(format: "High 32 bits: 0x%08X", high))
print(String(format: "Low 32 bits: 0x%08X", low))
print("Combined 64-bit value: ", terminator: "")
printHex64(combined)
}
main()
/*
run:
High 32 bits: 0x11223344
Low 32 bits: 0x55667788
Combined 64-bit value: 0x1122334455667788
*/
