collapseos/blk/355
Virgil Dupras f6ded7712e VE: add 't'
This is the first commit I do entirely in VE. It's a habit I'm planning
on taking as it helps a lot to find usability issues.
2020-06-11 18:12:01 -04:00

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( r c -- r f )
( Parse digit c and accumulate into result r.
Flag f is 0 when c was a valid digit, 1 when c was WS,
-1 when c was an invalid digit. )
: _pdacc
DUP 0x21 < IF DROP 1 EXIT THEN
( parse char )
( if bad, return "r -1" )
'0' -
DUP 10 < NOT IF DROP -1 EXIT THEN
( good, add to running result )
SWAP 10 * + ( r*10+n )
0 ( good )
;