mirror of
https://github.com/gonum/gonum.git
synced 2025-10-05 15:16:59 +08:00
93 lines
2.0 KiB
Go
93 lines
2.0 KiB
Go
// 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"
|
|
)
|
|
|
|
// Mass represents a mass in kilograms.
|
|
type Mass float64
|
|
|
|
const (
|
|
Yottagram Mass = 1e21
|
|
Zettagram Mass = 1e18
|
|
Exagram Mass = 1e15
|
|
Petagram Mass = 1e12
|
|
Teragram Mass = 1e9
|
|
Gigagram Mass = 1e6
|
|
Megagram Mass = 1e3
|
|
Kilogram Mass = 1.0
|
|
Hectogram Mass = 1e-1
|
|
Decagram Mass = 1e-2
|
|
Gram Mass = 1e-3
|
|
Decigram Mass = 1e-4
|
|
Centigram Mass = 1e-5
|
|
Milligram Mass = 1e-6
|
|
Microgram Mass = 1e-9
|
|
Nanogram Mass = 1e-12
|
|
Picogram Mass = 1e-15
|
|
Femtogram Mass = 1e-18
|
|
Attogram Mass = 1e-21
|
|
Zeptogram Mass = 1e-24
|
|
Yoctogram Mass = 1e-27
|
|
)
|
|
|
|
// Unit converts the Mass to a *Unit
|
|
func (m Mass) Unit() *Unit {
|
|
return New(float64(m), Dimensions{
|
|
MassDim: 1,
|
|
})
|
|
}
|
|
|
|
// Mass allows Mass to implement a Masser interface
|
|
func (m Mass) Mass() Mass {
|
|
return m
|
|
}
|
|
|
|
// From converts the unit into the receiver. From returns an
|
|
// error if there is a mismatch in dimension
|
|
func (m *Mass) From(u Uniter) error {
|
|
if !DimensionsMatch(u, Gram) {
|
|
*m = Mass(math.NaN())
|
|
return errors.New("Dimension mismatch")
|
|
}
|
|
*m = Mass(u.Unit().Value())
|
|
return nil
|
|
}
|
|
|
|
func (m Mass) Format(fs fmt.State, c rune) {
|
|
switch c {
|
|
case 'v':
|
|
if fs.Flag('#') {
|
|
fmt.Fprintf(fs, "%T(%v)", m, float64(m))
|
|
return
|
|
}
|
|
fallthrough
|
|
case 'e', 'E', 'f', 'F', 'g', 'G':
|
|
p, pOk := fs.Precision()
|
|
w, wOk := fs.Width()
|
|
const unit = " kg"
|
|
switch {
|
|
case pOk && wOk:
|
|
fmt.Fprintf(fs, "%*.*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), p, float64(m))
|
|
case pOk:
|
|
fmt.Fprintf(fs, "%.*"+string(c), p, float64(m))
|
|
case wOk:
|
|
fmt.Fprintf(fs, "%*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), float64(m))
|
|
default:
|
|
fmt.Fprintf(fs, "%"+string(c), float64(m))
|
|
}
|
|
fmt.Fprint(fs, unit)
|
|
default:
|
|
fmt.Fprintf(fs, "%%!%c(%T=%g kg)", c, m, float64(m))
|
|
}
|
|
}
|