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// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
// SPDX-FileCopyrightText: Bradley M. Bell <bradbell@seanet.com>
// SPDX-FileContributor: 2003-22 Bradley M. Bell
// ----------------------------------------------------------------------------
/*
{xrst_begin exp_eps_for0.cpp}
exp_eps: Verify Zero Order Forward Sweep
########################################
{xrst_spell_off}
{xrst_code cpp} */
# include <cmath> // for fabs function
bool exp_eps_for0(double *v0) // double v0[8]
{ bool ok = true;
double x = .5;
v0[1] = x; // abs_x = x;
ok &= std::fabs( v0[1] - 0.5) < 1e-10;
v0[2] = 1. * v0[1]; // temp = term * abs_x;
ok &= std::fabs( v0[2] - 0.5) < 1e-10;
v0[3] = v0[2] / 1.; // term = temp / Type(k);
ok &= std::fabs( v0[3] - 0.5) < 1e-10;
v0[4] = 1. + v0[3]; // sum = sum + term;
ok &= std::fabs( v0[4] - 1.5) < 1e-10;
v0[5] = v0[3] * v0[1]; // temp = term * abs_x;
ok &= std::fabs( v0[5] - 0.25) < 1e-10;
v0[6] = v0[5] / 2.; // term = temp / Type(k);
ok &= std::fabs( v0[6] - 0.125) < 1e-10;
v0[7] = v0[4] + v0[6]; // sum = sum + term;
ok &= std::fabs( v0[7] - 1.625) < 1e-10;
return ok;
}
bool exp_eps_for0(void)
{ double v0[8];
return exp_eps_for0(v0);
}
/* {xrst_code}
{xrst_spell_on}
{xrst_end exp_eps_for0.cpp}
*/
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