Most hobbyist would love to own a Goliath may you too would like one right?? so why? maybe because that it is big that it can grow up to 12inches. Well if Size Matters, why dont you consider The Brazilian Salmon Pink Tarantula? this guy grows fast and can grow about 10 inches (although mine is only 8-9 inches) making this a good start.
Reference Language | Libraries | Comparison | Changes. Double precision floating point number. On the Uno and other ATMEGA based boards, this occupies 4 bytes. That is, the double implementation is exactly the same as the float, with no gain in precision. On the Arduino Due, doubles have 8-byte (64 bit) precision.
1 The double precision data type uses twice as many bits as a float, yielding approximately twice the number of digits of precision. 2  According to the IEEE standard, a double precision floating point number is 64 bits long, comprised of:  one sign bit.