factor/extra/benchmark/struct-arrays/struct-arrays.factor

54 lines
1.6 KiB
Factor

! Copyright (C) 2009 Slava Pestov.
! See http://factorcode.org/license.txt for BSD license.
USING: accessors classes.struct combinators.smart fry kernel
math math.functions math.order math.parser sequences
specialized-arrays io ;
FROM: alien.c-types => float ;
IN: benchmark.struct-arrays
STRUCT: point { x float } { y float } { z float } ;
SPECIALIZED-ARRAY: point
: xyz ( point -- x y z )
[ x>> ] [ y>> ] [ z>> ] tri ; inline
: change-xyz ( point obj x: ( x obj -- x' ) y: ( y obj -- y' ) z: ( z obj -- z' ) -- point )
tri-curry [ change-x ] [ change-y ] [ change-z ] tri* ; inline
: init-point ( n point -- n )
over >fixnum >float
[ sin >>x ] [ cos 3 * >>y ] [ sin sq 2 / >>z ] tri drop
1 + ; inline
: make-points ( len -- points )
<point-array> dup 0 [ init-point ] reduce drop ; inline
: point-norm ( point -- norm )
[ xyz [ absq ] tri@ ] sum-outputs sqrt ; inline
: normalize-point ( point -- )
dup point-norm [ / ] [ / ] [ / ] change-xyz drop ; inline
: normalize-points ( points -- )
[ normalize-point ] each ; inline
: max-point ( point1 point2 -- point1 )
[ x>> max ] [ y>> max ] [ z>> max ] change-xyz ; inline
: <zero-point> ( -- point )
0 0 0 point <struct-boa> ; inline
: max-points ( points -- point )
<zero-point> [ max-point ] reduce ; inline
: print-point ( point -- )
[ xyz [ number>string ] tri@ ] output>array ", " join print ; inline
: struct-array-benchmark ( len -- )
make-points [ normalize-points ] [ max-points ] bi print-point ;
: main ( -- ) 10 [ 500000 struct-array-benchmark ] times ;
MAIN: main