Convert an integer to a float number - go

Question

How do I convert an integer value to float64 type?
I tried
float(integer_value)
But this does not work. And can't find any package that does this on Golang.org
How do I get float64 values from integer values?

Answer 1

There is no float type. Looks like you want float64. You could also use float32 if you only need a single-precision floating point value.
package main
import "fmt"
func main() {
i := 5
f := float64(i)
fmt.Printf("f is %f\n", f)
}

Answer 2

Just for the sake of completeness, here is a link to the golang documentation which describes all types. In your case it is numeric types:
uint8 the set of all unsigned 8-bit integers (0 to 255)
uint16 the set of all unsigned 16-bit integers (0 to 65535)
uint32 the set of all unsigned 32-bit integers (0 to 4294967295)
uint64 the set of all unsigned 64-bit integers (0 to 18446744073709551615)
int8 the set of all signed 8-bit integers (-128 to 127)
int16 the set of all signed 16-bit integers (-32768 to 32767)
int32 the set of all signed 32-bit integers (-2147483648 to 2147483647)
int64 the set of all signed 64-bit integers (-9223372036854775808 to 9223372036854775807)
float32 the set of all IEEE-754 32-bit floating-point numbers
float64 the set of all IEEE-754 64-bit floating-point numbers
complex64 the set of all complex numbers with float32 real and imaginary parts
complex128 the set of all complex numbers with float64 real and imaginary parts
byte alias for uint8
rune alias for int32
Which means that you need to use float64(integer_value).

Answer 3

just do these
package main
func main(){
a:= 70
afloat := float64(a)
fmt.Printf("type of a is %T\n", a) // will int
fmt.Printf("type of a is %T\n", afloat) //will float64
}

Answer 4

intutils.ToFloat32
// ToFloat32 converts a int num to a float32 num
func ToFloat32(in int) float32 {
return float32(in)
}
// ToFloat64 converts a int num to a float64 num
func ToFloat64(in int) float64 {
return float64(in)
}

Answer 5

Proper parentheses placement is key:
package main
import (
"fmt"
)
func main() {
var payload uint32
var fpayload float32
payload = 1320
// works
fpayload = float32(payload) / 100.0
fmt.Printf("%T = %d, %T = %f\n", payload, payload, fpayload, fpayload)
// doesn't work
fpayload = float32(payload / 100.0)
fmt.Printf("%T = %d, %T = %f\n", payload, payload, fpayload, fpayload)
}
results:
uint32 = 1320, float32 = 13.200000
uint32 = 1320, float32 = 13.000000
The Go Playground

Answer 6

Type Conversions T() where T is the desired datatype of the result are quite simple in GoLang.
In my program, I scan an integer i from the user input, perform a type conversion on it and store it in the variable f. The output prints the float64 equivalent of the int input. float32 datatype is also available in GoLang
Code:
package main
import "fmt"
func main() {
var i int
fmt.Println("Enter an Integer input: ")
fmt.Scanf("%d", &i)
f := float64(i)
fmt.Printf("The float64 representation of %d is %f\n", i, f)
}
Solution:
>>> Enter an Integer input:
>>> 232332
>>> The float64 representation of 232332 is 232332.000000