1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
// compile
// Copyright 2020 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 p
type I struct {
x int64
}
type F struct {
x float64
}
type C struct {
x *complex128
}
type D struct {
x complex64
}
type A [1]*complex128
//go:noinline
func (i I) X() C {
cx := complex(0, float64(i.x))
return C{&cx}
}
//go:noinline
func (f F) X() C {
cx := complex(f.x, 0)
return C{&cx}
}
//go:noinline
func (c C) X() C {
cx := complex(imag(*c.x), real(*c.x))
return C{&cx}
}
//go:noinline
func (d D) X() C {
cx := complex(float64(imag(d.x)), -float64(real(d.x)))
return C{&cx}
}
//go:noinline
func (a A) X() C {
cx := complex(-float64(imag(*a[0])), float64(real(*a[0])))
return C{&cx}
}
//go:noinline
func (i I) id() I {
return i
}
//go:noinline
func (f F) id() F {
return f
}
//go:noinline
func (c C) id() C {
return c
}
//go:noinline
func (d D) id() D {
return d
}
//go:noinline
func (a A) id() A {
return a
}
type T interface {
X() C
}
func G(x []T) []T {
var y []T
for _, a := range x {
var v T
switch u := a.(type) {
case I:
v = u.id()
case F:
v = u.id()
case C:
v = u.id()
case D:
v = u.id()
case A:
v = u.id()
}
y = append(y, v)
}
return y
}
|
