collapseos/blk/362

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: (parseb) ( a -- n f )
2020-05-25 20:16:07 -04:00
( '0': ASCII 0x30 'b': 0x62 0x6230 )
DUP 1+ @ 0x6230 = NOT IF 0 EXIT THEN ( a 0 )
( We have "0b" prefix )
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DUP C@ ( a len )
0 SWAP 1+ ( len+1 ) 3 DO ( a r )
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OVER I + C@ ( a r c ) _ ( a r n )
DUP 0< IF 2DROP 0 UNLOOP EXIT THEN
SWAP 1 LSHIFT + ( a r*2+n ) LOOP
NIP 1 ;