data: a string (values between 0 and 255) that contains packed floating-point numbers
startFloatIndex: the zero-based index from which on data should be unpacked (from data[4*startFloatIndex+1+additionalCharOffset]). Can be omitted in which case 0 is used
floatCount: the amount of floats that should be unpacked. Can be omitted in which case 0 is used (which indicates that the maximum of floats should be unpacked from the indicated startFloatIndex)
additionalCharOffset: a char offset that will be added before reading the floats. Can be omitted, in which case 0 is used.