Decimal floating point number to binary: Difference between revisions
Decimal floating point number to binary (view source)
Revision as of 10:49, 4 June 2018
, 6 years agoAdded Go
(Added Kotlin) |
(Added Go) |
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Line 433:
64 => 1000000
-100001 => -33
</pre>
=={{header|Go}}==
{{trans|Kotlin}}
<lang go>package main
import (
"fmt"
"math"
"strconv"
"strings"
)
func decToBin(d float64) string {
whole := int64(math.Floor(d))
binary := strconv.FormatInt(whole, 2) + "."
dd := d - float64(whole)
for dd > 0.0 {
r := dd * 2.0
if r >= 1.0 {
binary += "1"
dd = r - 1.0
} else {
binary += "0"
dd = r
}
}
return binary
}
func binToDec(s string) float64 {
ss := strings.Replace(s, ".", "", 1)
num, _ := strconv.ParseInt(ss, 2, 64)
ss = strings.Split(s, ".")[1]
ss = strings.Replace(ss, "1", "0", -1)
den, _ := strconv.ParseInt("1" + ss, 2, 64)
return float64(num) / float64(den)
}
func main() {
f := 23.34375
fmt.Printf("%f\t => %s\n", f, decToBin(f))
s := "1011.11101"
fmt.Printf("%s\t => %v\n", s, binToDec(s))
}</lang>
{{out}}
<pre>
23.343750 => 10111.01011
1011.11101 => 11.90625
</pre>
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