2008-07-22 04:31:11 -04:00
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! Copyright © 2008 Reginald Keith Ford II
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! Newton's Method of approximating roots
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2008-07-22 20:45:13 -04:00
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USING: kernel math math.derivatives ;
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2008-07-24 01:09:01 -04:00
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IN: math.newtons-method
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2008-07-22 04:31:11 -04:00
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<PRIVATE
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: newton-step ( x function -- x2 ) dupd [ call ] [ derivative ] 2bi / - ;
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: newton-precision ( -- n ) 7 ;
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PRIVATE>
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: newton-method ( guess function -- x ) newton-precision [ [ newton-step ] keep ] times drop ;
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