pub const ADD_FLOAT: u8 = 0x1A;Expand description
Typed + for two Float operands. as_float decode (raw
f64::from_bits), IEEE 754 add, push as NanValue::new_float.
Skips arith_add tag-dispatch + cross-type promotion. Hot in
numeric loops (Mandelbrot inner step is 3 muls + 1 add per iter).