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54e5f5d741
In Swift 3 shifts used to be defined on the concrete integer types, so the right-hand-side value in the shift expression could define a type for the result, as in `1 << i32` would have the type Int32. Swift 4 makes shift operators heterogeneous, so now `1 << i32` will result in an Int, according to the type of the left-hand-side value, which gets a default type for integer literals.
105 lines
1.9 KiB
Swift
105 lines
1.9 KiB
Swift
// RUN: %target-run-simple-swift | %FileCheck %s
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// REQUIRES: executable_test
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import Swift
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struct BitVector64 {
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var bits : Int64
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subscript (bit : Int) -> Bool {
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get {
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if (bits & (1 &<< Int64(bit))) != 0 {
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return true
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}
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return false
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}
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set {
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var mask: Int64 = 1 &<< bit
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if newValue {
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bits = bits | mask
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} else {
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bits = bits & ~mask
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}
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}
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}
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}
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// Create an empty bitvector
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var vec = BitVector64(bits: 0)
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// Set even elements to 'true'.
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for i in 0..<64 {
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if i % 2 == 0 {
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vec[i] = true
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}
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}
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// Print all elements
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for i in 0..<64 {
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print("\(vec[i])")
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}
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// CHECK: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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// CHECK-NEXT: true
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// CHECK-NEXT: false
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