source: Sophya/trunk/SophyaLib/NTools/simps2d.h@ 4018

Last change on this file since 4018 was 220, checked in by ansari, 26 years ago

Creation module DPC/NTools Reza 09/04/99
File size: 1.6 KB
RevLine 
[220]1#ifndef SIMPS2D_SEEN
2#define SIMPS2D_SEEN
3
4// Integration 2D domaine carre
5// Selon Abramowitz p892-893 formule 25.462, residu ordre 0.5**6
6// 0.387298=0.5*sqrt(3/5) 0.197531=16/81 0.123457=10/81 0.077160=25/324
7#if defined(SIMPSON9)
8 static int nd2d = 9;
9 static float dx2d[9] = { 0.000000 , 0.000000 , 0.000000
10 ,-0.387298 , 0.387298 , -0.387298
11 , 0.387298 , -0.387298 , 0.387298 };
12 static float dy2d[9] = { 0.000000 , -0.387298 , 0.387298
13 , 0.000000 , 0.000000 , -0.387298
14 , 0.387298 , 0.387298 , -0.387298 };
15 static float w2d[9] = { 0.197531 , 0.123457 , 0.123457
16 , 0.123457 , 0.123457 , 0.077157
17 , 0.0771605, 0.0771605, 0.0771605};
18#elif defined(SIMPSON4)
19 static int nd2d = 4;
20 static float dx2d[4] = { 0.288675, 0.288675,-0.288675,-0.288675 };
21 static float dy2d[4] = { 0.288675,-0.288675, 0.288675,-0.288675 };
22 static float w2d[4] = { 0.250000, 0.250000, 0.250000, 0.250000 };
23#elif defined(INTEG5)
24 static int nd2d = 5;
25 static float dx2d[5] = { 0. , -0.3, -0.3, 0.3, 0.3 };
26 static float dy2d[5] = { 0. , -0.3, 0.3, -0.3, 0.3 };
27 static float w2d[5] = { 0.2, 0.2, 0.2, 0.2, 0.2 };
28#elif defined(NOINTEG)
29 static int nd2d = 1;
30 static float dx2d[1] = { 0. };
31 static float dy2d[1] = { 0. };
32 static float w2d[1] = { 1. };
33#else
34 static int nd2d = 0;
35 static float dx2d[1] = { 999999. };
36 static float dy2d[1] = { 999999. };
37 static float w2d[1] = { 0. };
38#endif
39
40#endif
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