1 package pflag
2 3 import "strconv"
4 5 // -- float32 Value
6 type float32Value float32
7 8 func newFloat32Value(val float32, p *float32) *float32Value {
9 *p = val
10 return (*float32Value)(p)
11 }
12 13 func (f *float32Value) Set(s string) error {
14 v, err := strconv.ParseFloat(s, 32)
15 *f = float32Value(v)
16 return err
17 }
18 19 func (f *float32Value) Type() string {
20 return "float32"
21 }
22 23 func (f *float32Value) String() string { return strconv.FormatFloat(float64(*f), 'g', -1, 32) }
24 25 func float32Conv(sval string) (interface{}, error) {
26 v, err := strconv.ParseFloat(sval, 32)
27 if err != nil {
28 return 0, err
29 }
30 return float32(v), nil
31 }
32 33 // GetFloat32 return the float32 value of a flag with the given name
34 func (f *FlagSet) GetFloat32(name string) (float32, error) {
35 val, err := f.getFlagType(name, "float32", float32Conv)
36 if err != nil {
37 return 0, err
38 }
39 return val.(float32), nil
40 }
41 42 // Float32Var defines a float32 flag with specified name, default value, and usage string.
43 // The argument p points to a float32 variable in which to store the value of the flag.
44 func (f *FlagSet) Float32Var(p *float32, name string, value float32, usage string) {
45 f.VarP(newFloat32Value(value, p), name, "", usage)
46 }
47 48 // Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
49 func (f *FlagSet) Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
50 f.VarP(newFloat32Value(value, p), name, shorthand, usage)
51 }
52 53 // Float32Var defines a float32 flag with specified name, default value, and usage string.
54 // The argument p points to a float32 variable in which to store the value of the flag.
55 func Float32Var(p *float32, name string, value float32, usage string) {
56 CommandLine.VarP(newFloat32Value(value, p), name, "", usage)
57 }
58 59 // Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
60 func Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
61 CommandLine.VarP(newFloat32Value(value, p), name, shorthand, usage)
62 }
63 64 // Float32 defines a float32 flag with specified name, default value, and usage string.
65 // The return value is the address of a float32 variable that stores the value of the flag.
66 func (f *FlagSet) Float32(name string, value float32, usage string) *float32 {
67 p := new(float32)
68 f.Float32VarP(p, name, "", value, usage)
69 return p
70 }
71 72 // Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
73 func (f *FlagSet) Float32P(name, shorthand string, value float32, usage string) *float32 {
74 p := new(float32)
75 f.Float32VarP(p, name, shorthand, value, usage)
76 return p
77 }
78 79 // Float32 defines a float32 flag with specified name, default value, and usage string.
80 // The return value is the address of a float32 variable that stores the value of the flag.
81 func Float32(name string, value float32, usage string) *float32 {
82 return CommandLine.Float32P(name, "", value, usage)
83 }
84 85 // Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
86 func Float32P(name, shorthand string, value float32, usage string) *float32 {
87 return CommandLine.Float32P(name, shorthand, value, usage)
88 }
89