How to send float over serial

Question

What\'s the best way to send float, double, and int16 over serial on Arduino?

The Serial.print() only sends val

Answer 1

Structures and unions solve that issue. Use a packed structure with a byte sized union matching the structure. Overlap the pointers to the structure and union (or add the union in the structure). Use Serial.write to send the stream. Have a matching structure/union on receiving end. As long as byte order matches no issue otherwise you can unpack using the "C" hto(s..l) functions. Add "header" info to decode different structures/unions.