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