30 lines
1.3 KiB
Plaintext
30 lines
1.3 KiB
Plaintext
// version 1.0.5-2
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/* Kotlin (like Java) does not have unsigned integer types but we can simulate
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what would happen if we did have an unsigned 32 bit integer type using this extension function */
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fun Long.toUInt(): Long = this and 0xffffffffL
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@Suppress("INTEGER_OVERFLOW")
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fun main(args: Array<String>) {
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// The following 'signed' computations all produce compiler warnings that they will lead to an overflow
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// which have been ignored
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println("*** Signed 32 bit integers ***\n")
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println(-(-2147483647 - 1))
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println(2000000000 + 2000000000)
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println(-2147483647 - 2147483647)
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println(46341 * 46341)
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println((-2147483647 - 1) / -1)
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println("\n*** Signed 64 bit integers ***\n")
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println(-(-9223372036854775807 - 1))
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println(5000000000000000000 + 5000000000000000000)
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println(-9223372036854775807 - 9223372036854775807)
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println(3037000500 * 3037000500)
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println((-9223372036854775807 - 1) / -1)
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// Simulated unsigned computations, no overflow warnings as we're using the Long type
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println("\n*** Unsigned 32 bit integers ***\n")
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println((-4294967295L).toUInt())
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println((3000000000L.toUInt() + 3000000000L.toUInt()).toUInt())
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println((2147483647L - 4294967295L.toUInt()).toUInt())
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println((65537L * 65537L).toUInt())
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}
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