33 lines
878 B
Go
33 lines
878 B
Go
package getopt
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import (
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"fmt"
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)
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type floatVal float64
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func (f *floatVal) String() string {
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return fmt.Sprint(float64(*f))
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}
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func (f *floatVal) Set(val string) error {
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_, err := fmt.Sscanf(val, "%g", f)
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return err
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}
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// Float64Var defines a float64 flag with specified name, default value,
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// and usage string. The argument p points to a float64 variable in
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// which to store the value of the flag.
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func (set *FlagSet) Float64Var(p *float64, name string, value float64, usage string) {
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*p = value
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set.Var((*floatVal)(p), name, usage)
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}
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// Float64 defines a float64 flag with specified name, default value,
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// and usage string. The return value is the address of a float64
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// variable that stores the value of the flag.
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func (set *FlagSet) Float64(name string, value float64, usage string) *float64 {
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var f float64
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set.Float64Var(&f, name, value, usage)
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return &f
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}
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