float to byte array

[sandycoolxyz]

Hello,
I am using qt4.8.

I wanted to convert a float value into byte array.
eg. float val = 20000
val in hex = 46 9c 40 00 (00 40 9c 46 Little Endian)
val in int = 70 156 64 00 (00 64 156 70)
So basically I want the value (val in int) to be in array. ii.e array[0] = 00 , array [1] = 64, array[2] = 156, array[3] = 70.

[kshegunov]

@sandycoolxyz said in float to byte array:

union  {
    float val;
    char * array;
} conversion;

conversion.val = 20000;
QByteArray byteArray = QByteArray::fromRawData(conversion.array, sizeof(float));

or

float val = 20000;
QByteArray byteArray = QByteArray::fromRawData(reinterpret_cast<char *>(&val), sizeof(float));

or

float val = 20000;
QByteArray byteArray;
QDataStream out(&byteArray);
out << val;