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.
Double-precision floating-point format usually refers to binary64, as specified by the IEEE 754 standard, not to the 64-bit decimal format decimal64. In older computers, different floating-point formats of 8 bytes were used, e.g., GW-BASIC's double-precision data type was the 64-bit MBF floating-point format.