48 lines
1.2 KiB
Factor
48 lines
1.2 KiB
Factor
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! Copyright (C) 2006, 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors kernel kernel.private math math.private
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math.libm math.functions prettyprint.backend arrays
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math.functions.private sequences parser ;
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IN: math.complex.private
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M: real real-part ;
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M: real imaginary-part drop 0 ;
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M: complex real-part real>> ;
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M: complex imaginary-part imaginary>> ;
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M: complex absq >rect [ sq ] bi@ + ;
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: 2>rect ( x y -- xr yr xi yi )
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[ [ real-part ] bi@ ] 2keep
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[ imaginary-part ] bi@ ; 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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IN: syntax
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: C{ \ } [ first2 rect> ] parse-literal ; parsing
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M: complex pprint-delims drop \ C{ \ } ;
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M: complex >pprint-sequence >rect 2array ;
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