InverseGauss.h

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// $RCSfile: InverseGauss.h,v $
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// $Revision: 1.1.1.1 $
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// Copyright: see Copyright.readme
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//
// Inverse Gaussian density function.
//
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// Class category: Utilities
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//
// $Date: 2000/03/27 09:32:38 $
// $Author: fci $
//
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//  The inverse function of
//  <br>
//  y = Phi(x) = 2 * integral exp(-x^2) * dx / sqrt(pi)
//  <br>
//  [br]
//  Argument: A value $y$ between -1 and +1.
//  [br]
//  Return value: the value $x$.

extern double InverseGauss(double);