Add pidigits benchmark from language shootout
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Aaron Schaefer
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! Copyright (c) 2009 Aaron Schaefer. All rights reserved.
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! The contents of this file are licensed under the Simplified BSD License
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! A copy of the license is available at http://factorcode.org/license.txt
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USING: arrays formatting fry grouping io kernel locals math math.functions
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math.matrices math.parser math.primes.factors math.vectors prettyprint
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sequences sequences.deep sets ;
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IN: benchmark.pidigits
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: extract ( z x -- n )
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1 2array '[ _ v* sum ] map first2 /i ;
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: next ( z -- n )
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3 extract ;
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: safe? ( z n -- ? )
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[ 4 extract ] dip = ;
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: >matrix ( q s r t -- z )
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4array 2 group ;
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: produce ( z n -- z' )
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[ 10 ] dip -10 * 0 1 >matrix swap m. ;
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: gen-x ( x -- matrix )
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dup 2 * 1 + [ 2 * 0 ] keep >matrix ;
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: consume ( z k -- z' )
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gen-x m. ;
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:: (padded-total) ( row col -- str n format )
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"" row col + "%" "s\t:%d\n"
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10 col - number>string glue ;
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: padded-total ( row col -- )
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(padded-total) '[ _ printf ] call( str n -- ) ;
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:: (pidigits) ( k z n row col -- )
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n 0 > [
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z next :> y
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z y safe? [
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col 10 = [
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row 10 + y "\t:%d\n%d" printf
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k z y produce n 1 - row 10 + 1 (pidigits)
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] [
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y number>string write
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k z y produce n 1 - row col 1 + (pidigits)
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] if
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] [
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k 1 + z k consume n row col (pidigits)
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] if
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] [ row col padded-total ] if ;
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: pidigits ( n -- )
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[ 1 { { 1 0 } { 0 1 } } ] dip 0 0 (pidigits) ;
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: pidigits-main ( -- )
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10000 pidigits ;
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MAIN: pidigits-main
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