37 lines
986 B
Factor
37 lines
986 B
Factor
! Copyright (C) 2006 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: math.complex.private
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USING: kernel kernel.private math math.private
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math.libm math.functions ;
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M: real real ;
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M: real imaginary drop 0 ;
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M: number equal? number= ;
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M: complex absq >rect [ sq ] 2apply + ;
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: 2>rect ( x y -- xr yr xi yi )
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[ [ real ] 2apply ] 2keep [ imaginary ] 2apply ; inline
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M: complex number=
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2>rect number= [ number= ] [ 2drop f ] if ;
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: *re ( x y -- xr*yr xi*ri ) 2>rect * >r * r> ; inline
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: *im ( x y -- xi*yr xr*yi ) 2>rect >r * swap r> * ; inline
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M: complex + 2>rect + >r + r> (rect>) ;
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M: complex - 2>rect - >r - r> (rect>) ;
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M: complex * 2dup *re - -rot *im + (rect>) ;
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: complex/ ( x y -- r i m )
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dup absq >r 2dup *re + -rot *im - r> ; inline
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M: complex / complex/ tuck / >r / r> (rect>) ;
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M: complex abs absq >float fsqrt ;
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M: complex sqrt >polar swap fsqrt swap 2.0 / polar> ;
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M: complex hashcode* nip >rect >fixnum swap >fixnum bitxor ;
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