go issue11945 源码
golang issue11945 代码
文件路径：/test/fixedbugs/issue11945.go
// run
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import "fmt"
// issue 17446
const (
_ = real(0) // from bug report
_ = imag(0) // from bug report
// same as above, but exported for #43891
Real0 = real(0)
Imag0 = imag(0)
// if the arguments are untyped, the results must be untyped
// (and compatible with types that can represent the values)
_ int = real(1)
_ int = real('a')
_ int = real(2.0)
_ int = real(3i)
_ float32 = real(1)
_ float32 = real('a')
_ float32 = real(2.1)
_ float32 = real(3.2i)
_ float64 = real(1)
_ float64 = real('a')
_ float64 = real(2.1)
_ float64 = real(3.2i)
_ int = imag(1)
_ int = imag('a')
_ int = imag(2.1 + 3i)
_ int = imag(3i)
_ float32 = imag(1)
_ float32 = imag('a')
_ float32 = imag(2.1 + 3.1i)
_ float32 = imag(3i)
_ float64 = imag(1)
_ float64 = imag('a')
_ float64 = imag(2.1 + 3.1i)
_ float64 = imag(3i)
)
var tests = []struct {
code string
got, want interface{}
}{
{"real(1)", real(1), 1.0},
{"real('a')", real('a'), float64('a')},
{"real(2.0)", real(2.0), 2.0},
{"real(3.2i)", real(3.2i), 0.0},
{"imag(1)", imag(1), 0.0},
{"imag('a')", imag('a'), 0.0},
{"imag(2.1 + 3.1i)", imag(2.1 + 3.1i), 3.1},
{"imag(3i)", imag(3i), 3.0},
}
func main() {
// verify compile-time evaluated constant expressions
for _, test := range tests {
if test.got != test.want {
panic(fmt.Sprintf("%s: %v (%T) != %v (%T)", test.code, test.got, test.got, test.want, test.want))
}
}
}
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