Contents

package triangle

import "math"

type Kind string

const (
	Equ Kind = "equilateral"
	Iso      = "isosceles"
	Sca      = "scalene"
	NaT      = "not a triangle"
)

func KindFromSides(a, b, c float64) Kind {
	if math.IsNaN(a) || math.IsNaN(b) || math.IsNaN(c) {
		return NaT
	}
	if a > b {
		a, b = b, a
	}
	if b > c {
		b, c = c, b
	}
	if a > b {
		a, b = b, a
	}
	// sides are now sorted
	switch {
	case math.IsInf(c, 1): // largest side is +Inf, guards against (3, +Inf, +Inf)
		return NaT
	case a <= 0:
		return NaT
	case a+b < c: // triangle inequality
		return NaT
	case a == c:
		return Equ
	case a == b || b == c:
		return Iso
	}
	return Sca
}

Version data entries

122 entries across 122 versions & 1 rubygems

Version	Path
trackler-2.2.1.159	tracks/go/exercises/triangle/example.go
trackler-2.2.1.158	tracks/go/exercises/triangle/example.go
trackler-2.2.1.157	tracks/go/exercises/triangle/example.go
trackler-2.2.1.156	tracks/go/exercises/triangle/example.go
trackler-2.2.1.155	tracks/go/exercises/triangle/example.go
trackler-2.2.1.154	tracks/go/exercises/triangle/example.go
trackler-2.2.1.153	tracks/go/exercises/triangle/example.go
trackler-2.2.1.152	tracks/go/exercises/triangle/example.go
trackler-2.2.1.151	tracks/go/exercises/triangle/example.go
trackler-2.2.1.150	tracks/go/exercises/triangle/example.go
trackler-2.2.1.149	tracks/go/exercises/triangle/example.go
trackler-2.2.1.148	tracks/go/exercises/triangle/example.go
trackler-2.2.1.147	tracks/go/exercises/triangle/example.go
trackler-2.2.1.146	tracks/go/exercises/triangle/example.go
trackler-2.2.1.145	tracks/go/exercises/triangle/example.go
trackler-2.2.1.144	tracks/go/exercises/triangle/example.go
trackler-2.2.1.143	tracks/go/exercises/triangle/example.go
trackler-2.2.1.142	tracks/go/exercises/triangle/example.go
trackler-2.2.1.141	tracks/go/exercises/triangle/example.go
trackler-2.2.1.140	tracks/go/exercises/triangle/example.go