github.com/gopherd/gonum@v0.0.4/unit/pressure.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 // Pressure represents a pressure in Pascals. 17 type Pressure float64 18 19 const Pascal Pressure = 1 20 21 // Unit converts the Pressure to a *Unit. 22 func (pr Pressure) Unit() *Unit { 23 return New(float64(pr), Dimensions{ 24 LengthDim: -1, 25 MassDim: 1, 26 TimeDim: -2, 27 }) 28 } 29 30 // Pressure allows Pressure to implement a Pressurer interface. 31 func (pr Pressure) Pressure() Pressure { 32 return pr 33 } 34 35 // From converts the unit into the receiver. From returns an 36 // error if there is a mismatch in dimension. 37 func (pr *Pressure) From(u Uniter) error { 38 if !DimensionsMatch(u, Pascal) { 39 *pr = Pressure(math.NaN()) 40 return errors.New("unit: dimension mismatch") 41 } 42 *pr = Pressure(u.Unit().Value()) 43 return nil 44 } 45 46 func (pr Pressure) Format(fs fmt.State, c rune) { 47 switch c { 48 case 'v': 49 if fs.Flag('#') { 50 fmt.Fprintf(fs, "%T(%v)", pr, float64(pr)) 51 return 52 } 53 fallthrough 54 case 'e', 'E', 'f', 'F', 'g', 'G': 55 p, pOk := fs.Precision() 56 w, wOk := fs.Width() 57 const unit = " Pa" 58 switch { 59 case pOk && wOk: 60 fmt.Fprintf(fs, "%*.*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), p, float64(pr)) 61 case pOk: 62 fmt.Fprintf(fs, "%.*"+string(c), p, float64(pr)) 63 case wOk: 64 fmt.Fprintf(fs, "%*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), float64(pr)) 65 default: 66 fmt.Fprintf(fs, "%"+string(c), float64(pr)) 67 } 68 fmt.Fprint(fs, unit) 69 default: 70 fmt.Fprintf(fs, "%%!%c(%T=%g Pa)", c, pr, float64(pr)) 71 } 72 }