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  • Committer: Bazaar Package Importer
  • Author(s): Torsten Werner
  • Date: 2002-03-21 16:57:43 UTC
  • Revision ID: james.westby@ubuntu.com-20020321165743-e9mv12c1tb1plztg
Tags: upstream-2.6
Import upstream version 2.6

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macros/elem/asin.sci
 
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function t=asin(x)
 
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//Eelemt wize Sine-inverse of x
 
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//Entries of vector x must be in [-1,+1]
 
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//Entries of t are in    ]-pi/2,pi/2[ x ]-inf,+inf[
 
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//                   -pi/2 x [0,+inf] and pi/2 x ]-inf,0] (real x imag)
 
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//
 
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//!
 
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// Copyright INRIA
 
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if type(x)<>1 then error(53),end
 
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if x==[] then t=[],return,end
 
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t=-%i*log(%i*x+sqrt(ones(x)-x.*x))
 
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if norm(imag(x))==0&maxi(abs(x))<=1 then  t=real(t);end
 
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