C++ (Cpp) gsl_sf_ellint_P_e Examples

Example #1

File: gsl_wrap.cpp Project: CaptainSifff/tr29124_test

/// Elliptic integrals of the third kind.
double
ellint_3(double k, double nu, double phi)
{
  const gsl_mode_t mode = GSL_PREC_DOUBLE;
  gsl_sf_result result;
  int stat = gsl_sf_ellint_P_e(phi, k, nu, mode, &result);
  if (stat != GSL_SUCCESS)
    {
      std::ostringstream msg("Error in ellint_3:");
      msg << " k=" << k << " nu=" << nu << " phi=" << phi;
      throw std::runtime_error(msg.str());
    }
  else
    return result.val;
}

Example #2

File: ellint.c Project: tommyliu/visionPJ1

double gsl_sf_ellint_P(double phi, double k, double n, gsl_mode_t mode)
{
  EVAL_RESULT(gsl_sf_ellint_P_e(phi, k, n, mode, &result));
}

Example #3

File: sf_ellint.hpp Project: fujiisoup/MyLibrary

      /**
       * C++ version of gsl_sf_ellint_P_e().
       * P(phi,k,n) = Integral[(1 + n Sin[t]^2)^(-1)/Sqrt[1 - k^2 Sin[t]^2], {t, 0, phi}]
       * @param phi A real number
       * @param k A real number
       * @param n A real number
       * @param mode The mode
       * @param result The result as a @c gsl::sf::result object
       * @return Error code on failure
       */
      inline int P_e( double phi, double k, double n, mode_t mode, result& result ){
	return gsl_sf_ellint_P_e( phi, k, n, mode, &result ); }