(71B) FORTH questions

[Sylvain Cote]

(09-12-2023 01:33 PM)floppy Wrote:  But what is this NUMBER (addr -> number). The acting of addr (counted string at that address) and str is a kind of weird for me. Any explanation is welcome.

Both do the same thing but NUMBER take a counted string as parameter while VAL take a string.

VAL

Code:

"  1.2"  VAL  →  push  1.2      in the floating point stack  
" -3.4"  VAL  →  push -3.4      in the floating point stack
"  5"    VAL  →  push  5 and  0 in the integer stack
" -6"    VAL  →  push -6 and -1 in the integer stack

NUMBER
At this time, I am not able to make NUMBER works, I have tried multiple ways to pass the counted string but I consistently get an error.
I am very rusty in forth, so I may come back later with the how-to for this one.