How can I convert a byte array into a double and back?
- by user350005
For converting a byte array to a double I found this:
//convert 8 byte array to double
int start=0;//???
int i = 0;
int len = 8;
int cnt = 0;
byte[] tmp = new byte[len];
for (i = start; i < (start + len); i++) {
tmp[cnt] = arr[i];
//System.out.println(java.lang.Byte.toString(arr[i]) + " " + i);
cnt++;
}
long accum = 0;
i = 0;
for ( int shiftBy = 0; shiftBy < 64; shiftBy += 8 ) {
accum |= ( (long)( tmp[i] & 0xff ) ) << shiftBy;
i++;
}
return Double.longBitsToDouble(accum);
But I could not find anything which would convert a double into a byte array.
