mirror of
https://github.com/c9s/bbgo.git
synced 2024-11-23 07:15:15 +00:00
45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
//go:build dnum
|
|
|
|
package fixedpoint
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func TestDelta(t *testing.T) {
|
|
f1 := MustNewFromString("0.0009763593380614657")
|
|
f2 := NewFromInt(42300)
|
|
assert.InDelta(t, f1.Mul(f2).Float64(), 41.3, 1e-14)
|
|
}
|
|
|
|
func TestFloor(t *testing.T) {
|
|
f1 := MustNewFromString("10.333333")
|
|
f2 := f1.Floor()
|
|
assert.Equal(t, "10", f2.String())
|
|
}
|
|
|
|
func TestInternal(t *testing.T) {
|
|
r := &reader{"1.1e-15", 0}
|
|
c, e := r.getCoef()
|
|
assert.Equal(t, uint64(1100000000000000), c)
|
|
assert.Equal(t, 1, e)
|
|
f := MustNewFromString("1.1e-15")
|
|
digits := getDigits(f.coef)
|
|
assert.Equal(t, "11", digits)
|
|
f = MustNewFromString("1.00000000000000111")
|
|
assert.Equal(t, "1.000000000000001", f.String())
|
|
f = MustNewFromString("1.1e-15")
|
|
assert.Equal(t, "0.0000000000000011", f.String())
|
|
assert.Equal(t, 16, f.NumFractionalDigits())
|
|
f = MustNewFromString("1.00000000000000111")
|
|
assert.Equal(t, "1.000000000000001", f.String())
|
|
f = MustNewFromString("0.00000000000000000001000111")
|
|
assert.Equal(t, "0.00000000000000000001000111", f.String())
|
|
f = MustNewFromString("0.000000000000000000001000111")
|
|
assert.Equal(t, "1.000111e-21", f.String())
|
|
f = MustNewFromString("1e-100")
|
|
assert.Equal(t, 100, f.NumFractionalDigits())
|
|
}
|