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// Code generated by "go generate gonum.org/v1/gonum/unit”; DO NOT EDIT.
// Copyright ©2014 The Gonum 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 unit
import (
"errors"
"fmt"
"math"
"unicode/utf8"
)
// Angle represents an angle in radians.
type Angle float64
const Rad Angle = 1
// Unit converts the Angle to a *Unit.
func (a Angle) Unit() *Unit {
return New(float64(a), Dimensions{
AngleDim: 1,
})
}
// Angle allows Angle to implement a Angleer interface.
func (a Angle) Angle() Angle {
return a
}
// From converts the unit into the receiver. From returns an
// error if there is a mismatch in dimension.
func (a *Angle) From(u Uniter) error {
if !DimensionsMatch(u, Rad) {
*a = Angle(math.NaN())
return errors.New("unit: dimension mismatch")
}
*a = Angle(u.Unit().Value())
return nil
}
func (a Angle) Format(fs fmt.State, c rune) {
switch c {
case 'v':
if fs.Flag('#') {
fmt.Fprintf(fs, "%T(%v)", a, float64(a))
return
}
fallthrough
case 'e', 'E', 'f', 'F', 'g', 'G':
p, pOk := fs.Precision()
w, wOk := fs.Width()
const unit = " rad"
switch {
case pOk && wOk:
fmt.Fprintf(fs, "%*.*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), p, float64(a))
case pOk:
fmt.Fprintf(fs, "%.*"+string(c), p, float64(a))
case wOk:
fmt.Fprintf(fs, "%*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), float64(a))
default:
fmt.Fprintf(fs, "%"+string(c), float64(a))
}
fmt.Fprint(fs, unit)
default:
fmt.Fprintf(fs, "%%!%c(%T=%g rad)", c, a, float64(a))
}
}