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https://github.com/golang/go
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72 lines
1.5 KiB
Go
72 lines
1.5 KiB
Go
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// run
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// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import "fmt"
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// issue 17446
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const (
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_ = real(0) // from bug report
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_ = imag(0) // from bug report
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// if the arguments are untyped, the results must be untyped
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// (and compatible with types that can represent the values)
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_ int = real(1)
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_ int = real('a')
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_ int = real(2.0)
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_ int = real(3i)
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_ float32 = real(1)
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_ float32 = real('a')
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_ float32 = real(2.1)
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_ float32 = real(3.2i)
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_ float64 = real(1)
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_ float64 = real('a')
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_ float64 = real(2.1)
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_ float64 = real(3.2i)
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_ int = imag(1)
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_ int = imag('a')
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_ int = imag(2.1 + 3i)
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_ int = imag(3i)
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_ float32 = imag(1)
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_ float32 = imag('a')
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_ float32 = imag(2.1 + 3.1i)
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_ float32 = imag(3i)
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_ float64 = imag(1)
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_ float64 = imag('a')
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_ float64 = imag(2.1 + 3.1i)
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_ float64 = imag(3i)
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)
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var tests = []struct {
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code string
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got, want interface{}
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}{
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{"real(1)", real(1), 1.0},
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{"real('a')", real('a'), float64('a')},
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{"real(2.0)", real(2.0), 2.0},
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{"real(3.2i)", real(3.2i), 0.0},
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{"imag(1)", imag(1), 0.0},
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{"imag('a')", imag('a'), 0.0},
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{"imag(2.1 + 3.1i)", imag(2.1 + 3.1i), 3.1},
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{"imag(3i)", imag(3i), 3.0},
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}
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func main() {
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// verify compile-time evaluated constant expressions
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for _, test := range tests {
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if test.got != test.want {
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panic(fmt.Sprintf("%s: %v (%T) != %v (%T)", test.code, test.got, test.got, test.want, test.want))
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}
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}
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}
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