mirror of
https://github.com/Luzifer/go_helpers.git
synced 2024-12-23 20:41:19 +00:00
Added float helpers, moved helpers to subpackages
This commit is contained in:
parent
1626fb35db
commit
880438fb76
6 changed files with 68 additions and 6 deletions
|
@ -1,4 +1,4 @@
|
|||
package helpers_test
|
||||
package float_test
|
||||
|
||||
import (
|
||||
. "github.com/onsi/ginkgo"
|
||||
|
@ -7,7 +7,7 @@ import (
|
|||
"testing"
|
||||
)
|
||||
|
||||
func TestGoHelpers(t *testing.T) {
|
||||
func TestFloat(t *testing.T) {
|
||||
RegisterFailHandler(Fail)
|
||||
RunSpecs(t, "GoHelpers Suite")
|
||||
RunSpecs(t, "Float Suite")
|
||||
}
|
14
float/round.go
Normal file
14
float/round.go
Normal file
|
@ -0,0 +1,14 @@
|
|||
package float
|
||||
|
||||
import "math"
|
||||
|
||||
// Round returns a float rounded according to "Round to nearest, ties away from zero" IEEE floaing point rounding rule
|
||||
func Round(x float64) float64 {
|
||||
var absx, y float64
|
||||
absx = math.Abs(x)
|
||||
y = math.Floor(absx)
|
||||
if absx-y >= 0.5 {
|
||||
y += 1.0
|
||||
}
|
||||
return math.Copysign(y, x)
|
||||
}
|
35
float/round_test.go
Normal file
35
float/round_test.go
Normal file
|
@ -0,0 +1,35 @@
|
|||
package float_test
|
||||
|
||||
import (
|
||||
"math"
|
||||
|
||||
. "github.com/Luzifer/go_helpers/float"
|
||||
|
||||
. "github.com/onsi/ginkgo"
|
||||
. "github.com/onsi/gomega"
|
||||
)
|
||||
|
||||
var _ = Describe("Round", func() {
|
||||
|
||||
It("should match the example table of IEEE 754 rules", func() {
|
||||
Expect(Round(11.5)).To(Equal(12.0))
|
||||
Expect(Round(12.5)).To(Equal(13.0))
|
||||
Expect(Round(-11.5)).To(Equal(-12.0))
|
||||
Expect(Round(-12.5)).To(Equal(-13.0))
|
||||
})
|
||||
|
||||
It("should have correct rounding for numbers near 0.5", func() {
|
||||
Expect(Round(0.499999999997)).To(Equal(0.0))
|
||||
Expect(Round(-0.499999999997)).To(Equal(0.0))
|
||||
})
|
||||
|
||||
It("should be able to handle +/-Inf", func() {
|
||||
Expect(Round(math.Inf(1))).To(Equal(math.Inf(1)))
|
||||
Expect(Round(math.Inf(-1))).To(Equal(math.Inf(-1)))
|
||||
})
|
||||
|
||||
It("should be able to handle NaN", func() {
|
||||
Expect(math.IsNaN(Round(math.NaN()))).To(Equal(true))
|
||||
})
|
||||
|
||||
})
|
|
@ -1,4 +1,4 @@
|
|||
package helpers
|
||||
package str
|
||||
|
||||
// AppendIfMissing adds a string to a slice when it's not present yet
|
||||
func AppendIfMissing(slice []string, s string) []string {
|
|
@ -1,7 +1,7 @@
|
|||
package helpers_test
|
||||
package str_test
|
||||
|
||||
import (
|
||||
. "github.com/Luzifer/go_helpers"
|
||||
. "github.com/Luzifer/go_helpers/str"
|
||||
|
||||
. "github.com/onsi/ginkgo"
|
||||
. "github.com/onsi/gomega"
|
13
str/str_suite_test.go
Normal file
13
str/str_suite_test.go
Normal file
|
@ -0,0 +1,13 @@
|
|||
package str_test
|
||||
|
||||
import (
|
||||
. "github.com/onsi/ginkgo"
|
||||
. "github.com/onsi/gomega"
|
||||
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestStr(t *testing.T) {
|
||||
RegisterFailHandler(Fail)
|
||||
RunSpecs(t, "Str Suite")
|
||||
}
|
Loading…
Reference in a new issue