1package pflag 2 3import "strconv" 4 5// -- float64 Value 6type float64Value float64 7 8func newFloat64Value(val float64, p *float64) *float64Value { 9 *p = val 10 return (*float64Value)(p) 11} 12 13func (f *float64Value) Set(s string) error { 14 v, err := strconv.ParseFloat(s, 64) 15 *f = float64Value(v) 16 return err 17} 18 19func (f *float64Value) Type() string { 20 return "float64" 21} 22 23func (f *float64Value) String() string { return strconv.FormatFloat(float64(*f), 'g', -1, 64) } 24 25func float64Conv(sval string) (interface{}, error) { 26 return strconv.ParseFloat(sval, 64) 27} 28 29// GetFloat64 return the float64 value of a flag with the given name 30func (f *FlagSet) GetFloat64(name string) (float64, error) { 31 val, err := f.getFlagType(name, "float64", float64Conv) 32 if err != nil { 33 return 0, err 34 } 35 return val.(float64), nil 36} 37 38// Float64Var defines a float64 flag with specified name, default value, and usage string. 39// The argument p points to a float64 variable in which to store the value of the flag. 40func (f *FlagSet) Float64Var(p *float64, name string, value float64, usage string) { 41 f.VarP(newFloat64Value(value, p), name, "", usage) 42} 43 44// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash. 45func (f *FlagSet) Float64VarP(p *float64, name, shorthand string, value float64, usage string) { 46 f.VarP(newFloat64Value(value, p), name, shorthand, usage) 47} 48 49// Float64Var defines a float64 flag with specified name, default value, and usage string. 50// The argument p points to a float64 variable in which to store the value of the flag. 51func Float64Var(p *float64, name string, value float64, usage string) { 52 CommandLine.VarP(newFloat64Value(value, p), name, "", usage) 53} 54 55// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash. 56func Float64VarP(p *float64, name, shorthand string, value float64, usage string) { 57 CommandLine.VarP(newFloat64Value(value, p), name, shorthand, usage) 58} 59 60// Float64 defines a float64 flag with specified name, default value, and usage string. 61// The return value is the address of a float64 variable that stores the value of the flag. 62func (f *FlagSet) Float64(name string, value float64, usage string) *float64 { 63 p := new(float64) 64 f.Float64VarP(p, name, "", value, usage) 65 return p 66} 67 68// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash. 69func (f *FlagSet) Float64P(name, shorthand string, value float64, usage string) *float64 { 70 p := new(float64) 71 f.Float64VarP(p, name, shorthand, value, usage) 72 return p 73} 74 75// Float64 defines a float64 flag with specified name, default value, and usage string. 76// The return value is the address of a float64 variable that stores the value of the flag. 77func Float64(name string, value float64, usage string) *float64 { 78 return CommandLine.Float64P(name, "", value, usage) 79} 80 81// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash. 82func Float64P(name, shorthand string, value float64, usage string) *float64 { 83 return CommandLine.Float64P(name, shorthand, value, usage) 84} 85