1package pflag 2 3import ( 4 "fmt" 5 "strconv" 6) 7 8// -- float64 Value 9type float64Value float64 10 11func newFloat64Value(val float64, p *float64) *float64Value { 12 *p = val 13 return (*float64Value)(p) 14} 15 16func (f *float64Value) Set(s string) error { 17 v, err := strconv.ParseFloat(s, 64) 18 *f = float64Value(v) 19 return err 20} 21 22func (f *float64Value) Type() string { 23 return "float64" 24} 25 26func (f *float64Value) String() string { return fmt.Sprintf("%v", *f) } 27 28func float64Conv(sval string) (interface{}, error) { 29 return strconv.ParseFloat(sval, 64) 30} 31 32// GetFloat64 return the float64 value of a flag with the given name 33func (f *FlagSet) GetFloat64(name string) (float64, error) { 34 val, err := f.getFlagType(name, "float64", float64Conv) 35 if err != nil { 36 return 0, err 37 } 38 return val.(float64), nil 39} 40 41// Float64Var defines a float64 flag with specified name, default value, and usage string. 42// The argument p points to a float64 variable in which to store the value of the flag. 43func (f *FlagSet) Float64Var(p *float64, name string, value float64, usage string) { 44 f.VarP(newFloat64Value(value, p), name, "", usage) 45} 46 47// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash. 48func (f *FlagSet) Float64VarP(p *float64, name, shorthand string, value float64, usage string) { 49 f.VarP(newFloat64Value(value, p), name, shorthand, usage) 50} 51 52// Float64Var defines a float64 flag with specified name, default value, and usage string. 53// The argument p points to a float64 variable in which to store the value of the flag. 54func Float64Var(p *float64, name string, value float64, usage string) { 55 CommandLine.VarP(newFloat64Value(value, p), name, "", usage) 56} 57 58// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash. 59func Float64VarP(p *float64, name, shorthand string, value float64, usage string) { 60 CommandLine.VarP(newFloat64Value(value, p), name, shorthand, usage) 61} 62 63// Float64 defines a float64 flag with specified name, default value, and usage string. 64// The return value is the address of a float64 variable that stores the value of the flag. 65func (f *FlagSet) Float64(name string, value float64, usage string) *float64 { 66 p := new(float64) 67 f.Float64VarP(p, name, "", value, usage) 68 return p 69} 70 71// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash. 72func (f *FlagSet) Float64P(name, shorthand string, value float64, usage string) *float64 { 73 p := new(float64) 74 f.Float64VarP(p, name, shorthand, value, usage) 75 return p 76} 77 78// Float64 defines a float64 flag with specified name, default value, and usage string. 79// The return value is the address of a float64 variable that stores the value of the flag. 80func Float64(name string, value float64, usage string) *float64 { 81 return CommandLine.Float64P(name, "", value, usage) 82} 83 84// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash. 85func Float64P(name, shorthand string, value float64, usage string) *float64 { 86 return CommandLine.Float64P(name, shorthand, value, usage) 87} 88