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9 lines
325 B
Plaintext
9 lines
325 B
Plaintext
: (parsed) ( a -- n f )
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C@+ OVER C@ 0 ( a len firstchar startat )
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SWAP '-' = IF 1+ THEN ( a len startat )
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0 ROT ROT ( len ) ( startat ) DO ( a r )
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OVER I + C@ ( a r c ) _pdacc ( a r f )
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IF DROP 1- 0 UNLOOP EXIT THEN LOOP ( a r )
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( negate if needed )
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SWAP C@ '-' = IF 0 -^ THEN 1 ( r 1 ) ;
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