zxnumber

Rust code for converting a floating point number into the format used by the ZX81 and ZX Spectrum computers (5 bytes floating point, with a special case for integers).

lib.rs:

Handles the number format used by the ZX81 and ZX Spectrum.

A number is stored as 5 bytes in one of two formats: A "small integer" which is an integer between -65535 and 65535, or a floating point with a sign bit, a 7 bit exponent and 32 bit mantissa.