44 lines
838 B
Factor
44 lines
838 B
Factor
! Copyright (C) 2004, 2005 Slava Pestov.
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! See http://factor.sf.net/license.txt for BSD license.
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IN: math
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USING: kernel math math-internals ;
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! Trigonometric functions:
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! cos sec sin cosec tan cot
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! Hyperbolic functions:
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! cosh sech sinh cosech tanh coth
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: cos ( z -- cos )
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>rect 2dup
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fcosh swap fcos * -rot
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fsinh swap fsin neg * rect> ;
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: sec cos recip ;
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: cosh ( z -- cosh )
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>rect 2dup
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fcos swap fcosh * -rot
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fsin swap fsinh * rect> ;
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: sech cosh recip ;
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: sin ( z -- sin )
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>rect 2dup
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fcosh swap fsin * -rot
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fsinh swap fcos * rect> ;
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: cosec sin recip ;
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: sinh ( z -- sinh )
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>rect 2dup
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fcos swap fsinh * -rot
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fsin swap fcosh * rect> ;
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: cosech sinh recip ;
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: tan dup sin swap cos / ;
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: tanh dup sinh swap cosh / ;
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: cot dup cos swap sin / ;
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: coth dup cosh swap sinh / ;
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