github.com/gopherd/gonum@v0.0.4/unit/acceleration.go (about)

     1  // Code generated by "go generate github.com/gopherd/gonum/unit”; DO NOT EDIT.
     2  
     3  // Copyright ©2014 The Gonum Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package unit
     8  
     9  import (
    10  	"errors"
    11  	"fmt"
    12  	"math"
    13  	"unicode/utf8"
    14  )
    15  
    16  // Acceleration represents an acceleration in metres per second squared.
    17  type Acceleration float64
    18  
    19  // Unit converts the Acceleration to a *Unit.
    20  func (a Acceleration) Unit() *Unit {
    21  	return New(float64(a), Dimensions{
    22  		LengthDim: 1,
    23  		TimeDim:   -2,
    24  	})
    25  }
    26  
    27  // Acceleration allows Acceleration to implement a Accelerationer interface.
    28  func (a Acceleration) Acceleration() Acceleration {
    29  	return a
    30  }
    31  
    32  // From converts the unit into the receiver. From returns an
    33  // error if there is a mismatch in dimension.
    34  func (a *Acceleration) From(u Uniter) error {
    35  	if !DimensionsMatch(u, Acceleration(0)) {
    36  		*a = Acceleration(math.NaN())
    37  		return errors.New("unit: dimension mismatch")
    38  	}
    39  	*a = Acceleration(u.Unit().Value())
    40  	return nil
    41  }
    42  
    43  func (a Acceleration) Format(fs fmt.State, c rune) {
    44  	switch c {
    45  	case 'v':
    46  		if fs.Flag('#') {
    47  			fmt.Fprintf(fs, "%T(%v)", a, float64(a))
    48  			return
    49  		}
    50  		fallthrough
    51  	case 'e', 'E', 'f', 'F', 'g', 'G':
    52  		p, pOk := fs.Precision()
    53  		w, wOk := fs.Width()
    54  		const unit = " m s^-2"
    55  		switch {
    56  		case pOk && wOk:
    57  			fmt.Fprintf(fs, "%*.*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), p, float64(a))
    58  		case pOk:
    59  			fmt.Fprintf(fs, "%.*"+string(c), p, float64(a))
    60  		case wOk:
    61  			fmt.Fprintf(fs, "%*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), float64(a))
    62  		default:
    63  			fmt.Fprintf(fs, "%"+string(c), float64(a))
    64  		}
    65  		fmt.Fprint(fs, unit)
    66  	default:
    67  		fmt.Fprintf(fs, "%%!%c(%T=%g m s^-2)", c, a, float64(a))
    68  	}
    69  }