tradoptest_46.cpp

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// @HEADER
// *****************************************************************************
//                           Sacado Package
//
// Copyright 2006 NTESS and the Sacado contributors.
// SPDX-License-Identifier: LGPL-2.1-or-later
// *****************************************************************************
// @HEADER

/* Try to test all combinations of types and operations */



#define ADT_RAD Sacado::Rad::



#include "Sacado_trad.hpp"

#include <cstdio>

using std::printf;



typedef ADT_RAD IndepADvar<double> AI;

typedef ADT_RAD ADvar<double> A;

typedef ADT_RAD ConstADvar<double> C;

typedef ADT_RAD ADvari<double> Ai;

typedef const ADT_RAD IndepADvar<double> cAI;

typedef const ADT_RAD ADvar<double> cA;

typedef const ADT_RAD ConstADvar<double> cC;

typedef const ADT_RAD ADvari<double> cAi;

static int rc;



/* This is to be run through an awk program that changes lines */

/* with "BINTEST" or "UNOPTEST" at the beginning of the line into */

/* a the desired C++ (which we can then inspect). */



 void

botch(const char *what, double wanted, double got)

{

  printf("%s: expected %g, got %g, diff = %.2g\n", what, wanted, got, wanted-got);

  rc = 1;

  }



 const double tol = 5e-16;



 int

differ(double a, double b)

{

  double d = a - b;

  if (d < 0.)

    d = -d;

  if (a < 0.)

    a = -a;

  if (b < 0.)

    b = -b;

  if (a < b)

    a = b;

  if (a > 0.)

    d /= a;

  return d > tol;

  }



#ifndef RAD_EQ_ALIAS

#define Plus_dx 1.

#else

#ifdef RAD_AUTO_AD_Const

#define Plus_dx 1.

#else

#define Plus_dx 0.

#endif

#endif



 int

main(void)

{

  AI xAI, yAI;

  A fA, xA, yA;

  C xC, yC;

  double dx, f, xd;



  rc = 0;


  /**** Test of atan ****/

  xd = 2.; f = atan(2.); dx = 0.2;
  xAI = xd;
  fA = atan(xAI);
  A::Gradcomp();
  if (differ(fA.val(), f)) botch("fA = atan(xAI)", f, fA.val());
  else if (differ(xAI.adj(), dx)) botch("d atan(xAI)/dx", dx, xAI.adj());
  {
  A::aval_reset();
  cAI xcAI(xd);
  fA = atan(xcAI);
  A::Gradcomp();
  if (differ(fA.val(), f)) botch("fA = atan(xcAI)", f, fA.val());
  else if (differ(xcAI.adj(), dx)) botch("d atan(xcAI)/dx", dx, xcAI.adj());
  }
  xA = xd;
  fA = atan(xA);
  A::Gradcomp();
  if (differ(fA.val(), f)) botch("fA = atan(xA)", f, fA.val());
  else if (differ(xA.adj(), dx)) botch("d atan(xA)/dx", dx, xA.adj());
  {
  A::aval_reset();
  cA xcA(xd);
  fA = atan(xcA);
  A::Gradcomp();
  if (differ(fA.val(), f)) botch("fA = atan(xcA)", f, fA.val());
  else if (differ(xcA.adj(), dx)) botch("d atan(xcA)/dx", dx, xcA.adj());
  }
  xC = xd;
  fA = atan(xC);
  A::Gradcomp();
  if (differ(fA.val(), f)) botch("fA = atan(xC)", f, fA.val());
  else if (differ(xC.adj(), dx)) botch("d atan(xC)/dx", dx, xC.adj());
  {
  A::aval_reset();
  cC xcC(xd);
  fA = atan(xcC);
  A::Gradcomp();
  if (differ(fA.val(), f)) botch("fA = atan(xcC)", f, fA.val());
  else if (differ(xcC.adj(), dx)) botch("d atan(xcC)/dx", dx, xcC.adj());
  }
  {
  cAi xcAi(xd);
  fA = atan(xcAi);
  A::Gradcomp();
  if (differ(fA.val(), f)) botch("fA = atan(xcAi)", f, fA.val());
  else if (differ(xcAi.aval, dx)) botch("d atan(xcAi)/dx", dx, xcAi.aval);
  }
  {
  A::aval_reset();
  cAi xcAi(xd);
  fA = atan(xcAi);
  A::Gradcomp();
  if (differ(fA.val(), f)) botch("fA = atan(xcAi)", f, fA.val());
  else if (differ(xcAi.aval, dx)) botch("d atan(xcAi)/dx", dx, xcAi.aval);
  }


  if (!rc) // chatter for cppunit test, which cannot tolerate silence

    printf("OK\n");

  return rc;

  }