# Float value to Byte array
**URL:** https://discourse.processing.org/t/float-value-to-byte-array/16698
**Category:** Coding Questions
**Created:** [December 29, 2019, 10:44am UTC](https://discourse.processing.org/t/float-value-to-byte-array/16698 "2019-12-29T10:44:49Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@GeorgeJava](https://discourse.processing.org/u/GeorgeJava)
#### Post date: [December 29, 2019, 10:44am UTC](https://discourse.processing.org/t/float-value-to-byte-array/16698/1 "2019-12-29T10:44:49Z")
Hello there how to convert float val to byte array ? i have this function that work in oposite way, it converts Byte array to Float value:
```auto
public float byteArrayToFloat(byte test[]) {
int MASK = 0xff;
int bits = 0;
int i = 3;
for (int shifter = 3; shifter >= 0; shifter--) {
bits |= ((int) test[i] & MASK) << (shifter * 8);
i--;
}
println(bits);
return Float.intBitsToFloat(bits);
}
```
So⦠How to make **floatToByteArray** function?
---
### Author:  [@glv](https://discourse.processing.org/u/glv)
#### Post date: [December 29, 2019, 12:25pm UTC](https://discourse.processing.org/t/float-value-to-byte-array/16698/2 "2019-12-29T12:25:34Z")
> [@GeorgeJava](#):
>
> floatToByteArray
A search for " **floatToByteArray**" is a good start.
I did this a while back and was able to come up with solutions.
π
---
### Author:  [@GoToLoop](https://discourse.processing.org/u/GoToLoop)
#### Post date: [December 29, 2019, 12:29pm UTC](https://discourse.processing.org/t/float-value-to-byte-array/16698/3 "2019-12-29T12:29:02Z")
This is my take on it for both opposite conversion ways. β
You can also take a look at this site below in order to double-check results: β
- [H-Schmidt.net/FloatConverter/IEEE754.html](http://H-Schmidt.net/FloatConverter/IEEE754.html)
- [Docs.Oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Float.html#floatToIntBits(float)](http://Docs.Oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Float.html#floatToIntBits(float))
```auto
/**
* Float As Bytes Array (v1.1.1)
* GoToLoop (2019/Dec/29)
* https://Discourse.Processing.org/t/float-value-to-byte-array/16698/3
*/
static final float MY_FLOAT = -PI;
byte[] floatBytes;
float convertedFloat;
void setup() {
println(MY_FLOAT);
floatBytes = floatToByteArr(MY_FLOAT);
for (final byte b : floatBytes) print(hex(b), TAB);
println();
convertedFloat = byteArrToFloat(floatBytes);
println(convertedFloat, TAB, convertedFloat == MY_FLOAT);
exit();
}
static final byte[] floatToByteArr(final float f) {
return byte(floatToIntArr(f));
}
static final int[] floatToIntArr(final float f) {
final int i = Float.floatToIntBits(f);
return new int[] { i >>> 030, i >> 020 & 0xff, i >> 010 & 0xff, i & 0xff };
}
@SafeVarargs static final float byteArrToFloat(final byte... b) {
return b != null? intArrToFloat(int(b)) : MIN_FLOAT;
}
@SafeVarargs static final float intArrToFloat(final int... i) {
if (i == null || i.length < Float.BYTES) return MIN_FLOAT;
return Float.intBitsToFloat(i[0] << 030 | i[1] << 020 | i[2] << 010 | i[3]);
}
```
---
### Author:  [@GeorgeJava](https://discourse.processing.org/u/GeorgeJava)
#### Post date: [December 29, 2019, 7:00pm UTC](https://discourse.processing.org/t/float-value-to-byte-array/16698/4 "2019-12-29T19:00:56Z")
> [@GoToLoop](#):
>
> @SafeVarargs
Why is there @SafeVarargs ?
> [@GoToLoop](#):
>
> i \>\>\> 030
And difference between β\>\>β and β\>\>\>β ?
> [@GoToLoop](#):
>
> i \>\>\> 030, i \>\> 020 & 0xff, i \>\> 010
β¦ And why is the shifts written as β030β, β020β and β010β ? Maybe iam not the only one who wants to know π
---
### Author:  [@GeorgeJava](https://discourse.processing.org/u/GeorgeJava)
#### Post date: [December 29, 2019, 7:14pm UTC](https://discourse.processing.org/t/float-value-to-byte-array/16698/5 "2019-12-29T19:14:34Z")
ahh whe you place **zero β0β** before number, it is in the octal number system, thats it
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### Author:  [@glv](https://discourse.processing.org/u/glv)
#### Post date: [December 29, 2019, 7:44pm UTC](https://discourse.processing.org/t/float-value-to-byte-array/16698/6 "2019-12-29T19:44:24Z")
> [@GeorgeJava](#):
>
> And difference between β\>\>β and β\>\>\>β ?
> **[Bitwise Right Shift Operators in Java - GeeksforGeeks](https://www.geeksforgeeks.org/bitwise-shift-operators-in-java/)**
>
> A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.
π
---
### Author:  [@GoToLoop](https://discourse.processing.org/u/GoToLoop)
#### Post date: [December 29, 2019, 8:24pm UTC](https://discourse.processing.org/t/float-value-to-byte-array/16698/7 "2019-12-29T20:24:47Z")
> [@GeorgeJava](#):
>
> Why is there @SafeVarargs?
[Docs.Oracle.com/en/java/javase/11/docs/api/java.base/java/lang/SafeVarargs.html](http://Docs.Oracle.com/en/java/javase/11/docs/api/java.base/java/lang/SafeVarargs.html)
> [@GeorgeJava](#):
>
> And difference between `>>` and `>>>`?
Bit-shift operator `>>>` shifts the most significant bit (negative bit), so the value isnβt negative anymore.
> [@GeorgeJava](#):
>
> And why is the shifts written as β030β, β020β and β010β?
`println(030, 020, 010); // 24, 16, 8 (Octal)`