getFloat32 method Null safety
Returns the floating point number represented by the four bytes at
byteOffset in this object, in IEEE 754
single-precision binary floating-point format (binary32).
byteOffset must be non-negative, and
byteOffset + 4 must be less than or equal to the length of this object.
double getFloat32(int byteOffset, [Endian endian = Endian.big]);