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17 lines
468 B
Plaintext
17 lines
468 B
Plaintext
: (parseb) ( a -- n f )
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( '0': ASCII 0x30 'b': 0x62 0x6230: 25136 )
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DUP @ 25136 = NOT IF 0 EXIT THEN ( a 0 )
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( We have "0b" prefix )
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2+
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0 ( a r )
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BEGIN
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SWAP C@+ ( r a+1 c )
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DUP NOT IF 2DROP 1 EXIT THEN ( r 1 )
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_ ( r a n )
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DUP 0< IF ROT 2DROP 0 EXIT THEN ( a 0 )
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ROT 2 * + ( a r*2+n )
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AGAIN
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;
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