1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
// 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_for2.cpp}
exp_eps: Verify Second Order Forward Sweep
##########################################
{xrst_spell_off}
{xrst_code cpp} */
# include <cmath> // for fabs function
extern bool exp_eps_for0(double *v0); // computes zero order forward sweep
extern bool exp_eps_for1(double *v1); // computes first order forward sweep
bool exp_eps_for2(void)
{ bool ok = true;
double v0[8], v1[8], v2[8];
// set the value of v0[j], v1[j] for j = 1 , ... , 7
ok &= exp_eps_for0(v0);
ok &= exp_eps_for1(v1);
v2[1] = 0.; // v1 = x
ok &= std::fabs( v2[1] - 0. ) <= 1e-10;
v2[2] = 1. * v2[1]; // v2 = 1 * v1
ok &= std::fabs( v2[2] - 0. ) <= 1e-10;
v2[3] = v2[2] / 1.; // v3 = v2 / 1
ok &= std::fabs( v2[3] - 0. ) <= 1e-10;
v2[4] = v2[3]; // v4 = 1 + v3
ok &= std::fabs( v2[4] - 0. ) <= 1e-10;
v2[5] = v2[3] * v0[1] + 2. * v1[3] * v1[1] // v5 = v3 * v1
+ v0[3] * v2[1];
ok &= std::fabs( v2[5] - 2. ) <= 1e-10;
v2[6] = v2[5] / 2.; // v6 = v5 / 2
ok &= std::fabs( v2[6] - 1. ) <= 1e-10;
v2[7] = v2[4] + v2[6]; // v7 = v4 + v6
ok &= std::fabs( v2[7] - 1. ) <= 1e-10;
return ok;
}
/* {xrst_code}
{xrst_spell_on}
{xrst_end exp_eps_for2.cpp}
*/
|
