11 lines
374 B
Factor
11 lines
374 B
Factor
! Copyright (C) 2007 Slava Pestov, Daniel Ehrenberg.
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! See http://factorcode.org/license.txt for BSD license.
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USING: math kernel memoize tools.test parser ;
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MEMO: fib ( m -- n )
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dup 1 <= [ drop 1 ] [ dup 1 - fib swap 2 - fib + ] if ;
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[ 89 ] [ 10 fib ] unit-test
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[ "USE: memoize MEMO: x ( a b c d e -- f g h i j ) >r >r >r >r 1+ r> r> r> r> ;" parse ] unit-test-fails
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