/*
Combine two 32‑bit integers into one 64‑bit integer.
- The high 32 bits are shifted left by 32 positions.
- The low 32 bits are OR'ed into the lower half.
*/
fun combineTwo32bit(high: UInt, low: UInt): ULong {
/*
Steps:
1. Convert `high` to ULong so it can be shifted safely.
2. Shift it left by 32 bits to place it in the upper half.
3. Convert `low` to ULong and OR it into the lower half.
*/
return (high.toULong() shl 32) or low.toULong()
}
// Function that prints a 64‑bit value in uppercase hexadecimal
// with leading zeros.
//
// Note: String.format does not understand ULong directly,
// so we convert to Long first.
fun printHex64(value: ULong) {
println("0x%016X".format(value.toLong()))
}
fun main() {
val high: UInt = 0x11223344u // Example high 32 bits
val low: UInt = 0x55667788u // Example low 32 bits
val combined: ULong = combineTwo32bit(high, low)
// String.format also doesn't support UInt directly,
// so we convert to Int for printing.
println("High 32 bits: 0x%08X".format(high.toInt()))
println("Low 32 bits: 0x%08X".format(low.toInt()))
print("Combined 64-bit value: ")
printHex64(combined)
}
/*
run:
High 32 bits: 0x11223344
Low 32 bits: 0x55667788
Combined 64-bit value: 0x1122334455667788
*/
