Truncate very small values to reduce hassle with round-off

git-svn-id: https://svn.dealii.org/trunk@15037 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/tests/base/functions_01.cc b/tests/base/functions_01.cc
index e60e68373459d96fd7fc08c07e9ec9d78966e9e9..ed1298b3275ad3b934e8e22f1b0a7b0c809761da 100644 (file)
--- a/tests/base/functions_01.cc
+++ b/tests/base/functions_01.cc
@@ -106,7 +106,14 @@ check_function(const Functions::FlowFunction<dim>& f,
   for (unsigned int i=0;i<values.size();++i)
     for (unsigned int j=0;j<values[i].size();++j)
       {
-       patches[0].data(j, i) = values[i](j);
+                                        // generate data, but
+                                        // truncate too small values
+                                        // to avoid output that
+                                        // depends on round-off
+       if (std::fabs (values[i](j)) > 1e-10)
+         patches[0].data(j, i) = values[i](j);
+       else
+         patches[0].data(j, i) = 0;
        Assert (values[i](j) == values2[j][i], ExcInternalError());
       }
   

diff --git a/tests/base/functions_01/cmp/generic b/tests/base/functions_01/cmp/generic
index 5cd8b6eca2d57749e3d45975cfe1fdbf0517f364..1ff91be864bbc7b8918794d9476a466f9be061bb 100644 (file)
--- a/tests/base/functions_01/cmp/generic
+++ b/tests/base/functions_01/cmp/generic
@@ -10,35 +10,35 @@ DEAL::Laplacians 0.719980
 # For a description of the GNUPLOT format see the GNUPLOT manual.
 #
 # <x> <y> <comp> <comp> <comp> 
--1.00000 -1.00000 0.00000 0.00000 3.74940e-33 
--0.500000 -1.00000 -3.06162e-17 1.87470e-33 3.06162e-17 
-0.00000 -1.00000 -6.12323e-17 0.00000 0.00000 
-0.500000 -1.00000 -3.06162e-17 -1.87470e-33 -3.06162e-17 
-1.00000 -1.00000 0.00000 0.00000 -3.74940e-33 
+-1.00000 -1.00000 0.00000 0.00000 0.00000 
+-0.500000 -1.00000 0.00000 0.00000 0.00000 
+0.00000 -1.00000 0.00000 0.00000 0.00000 
+0.500000 -1.00000 0.00000 0.00000 0.00000 
+1.00000 -1.00000 0.00000 0.00000 0.00000 
 
--1.00000 -0.500000 -1.87470e-33 3.06162e-17 3.06162e-17 
+-1.00000 -0.500000 0.00000 0.00000 0.00000 
 -0.500000 -0.500000 -0.250000 0.250000 0.250000 
 0.00000 -0.500000 -0.500000 0.00000 0.00000 
 0.500000 -0.500000 -0.250000 -0.250000 -0.250000 
-1.00000 -0.500000 -1.87470e-33 -3.06162e-17 -3.06162e-17 
+1.00000 -0.500000 0.00000 0.00000 0.00000 
 
--1.00000 0.00000 0.00000 6.12323e-17 0.00000 
+-1.00000 0.00000 0.00000 0.00000 0.00000 
 -0.500000 0.00000 0.00000 0.500000 0.00000 
 0.00000 0.00000 0.00000 0.00000 0.00000 
 0.500000 0.00000 0.00000 -0.500000 0.00000 
-1.00000 0.00000 0.00000 -6.12323e-17 0.00000 
+1.00000 0.00000 0.00000 0.00000 0.00000 
 
--1.00000 0.500000 1.87470e-33 3.06162e-17 -3.06162e-17 
+-1.00000 0.500000 0.00000 0.00000 0.00000 
 -0.500000 0.500000 0.250000 0.250000 -0.250000 
 0.00000 0.500000 0.500000 0.00000 0.00000 
 0.500000 0.500000 0.250000 -0.250000 0.250000 
-1.00000 0.500000 1.87470e-33 -3.06162e-17 3.06162e-17 
+1.00000 0.500000 0.00000 0.00000 0.00000 
 
--1.00000 1.00000 0.00000 0.00000 -3.74940e-33 
--0.500000 1.00000 3.06162e-17 1.87470e-33 -3.06162e-17 
-0.00000 1.00000 6.12323e-17 0.00000 0.00000 
-0.500000 1.00000 3.06162e-17 -1.87470e-33 3.06162e-17 
-1.00000 1.00000 0.00000 0.00000 3.74940e-33 
+-1.00000 1.00000 0.00000 0.00000 0.00000 
+-0.500000 1.00000 0.00000 0.00000 0.00000 
+0.00000 1.00000 0.00000 0.00000 0.00000 
+0.500000 1.00000 0.00000 0.00000 0.00000 
+1.00000 1.00000 0.00000 0.00000 0.00000 
 
 
 DEAL:: Functions::StokesCosine<3>
@@ -241,129 +241,129 @@ attribute "element type" string "cubes"
 attribute "ref" string "positions"
 object "data" class array type float rank 1 shape 4 items 125 data follows
        0.00000 0.00000 0.00000 0.00000
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-       3.74940e-33     0.00000 0.00000 0.00000
-       1.87470e-33     0.00000 0.00000 1.87470e-33
-       0.00000 0.00000 0.00000 0.00000
-       0.00000 1.87470e-33     0.00000 -1.87470e-33
-       1.53081e-17     1.53081e-17     -1.87470e-33    -1.53081e-17
-       3.06162e-17     0.00000 0.00000 0.00000
-       1.53081e-17     -1.53081e-17    1.87470e-33     1.53081e-17
-       0.00000 -1.87470e-33    0.00000 1.87470e-33
-       0.00000 3.74940e-33     0.00000 0.00000
-       0.00000 3.06162e-17     0.00000 0.00000
-       0.00000 0.00000 0.00000 0.00000
-       0.00000 -3.06162e-17    0.00000 0.00000
-       0.00000 -3.74940e-33    0.00000 0.00000
-       0.00000 1.87470e-33     0.00000 1.87470e-33
-       -1.53081e-17    1.53081e-17     1.87470e-33     1.53081e-17
-       -3.06162e-17    0.00000 0.00000 0.00000
-       -1.53081e-17    -1.53081e-17    -1.87470e-33    -1.53081e-17
-       0.00000 -1.87470e-33    0.00000 -1.87470e-33
-       0.00000 0.00000 0.00000 0.00000
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-       -3.74940e-33    0.00000 0.00000 0.00000
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-       0.00000 0.00000 0.00000 0.00000
-       0.00000 0.00000 -3.74940e-33    -1.87470e-33
-       1.53081e-17     9.37350e-34     -3.06162e-17    -1.53081e-17
-       3.06162e-17     0.00000 0.00000 0.00000
-       1.53081e-17     -9.37350e-34    3.06162e-17     1.53081e-17
-       0.00000 0.00000 3.74940e-33     1.87470e-33
-       9.37350e-34     1.53081e-17     -3.06162e-17    -1.53081e-17
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        0.125000        0.125000        -0.250000       -0.125000
        0.250000        0.00000 0.00000 0.00000
        0.125000        -0.125000       0.250000        0.125000
-       9.37350e-34     -1.53081e-17    3.06162e-17     1.53081e-17
-       0.00000 3.06162e-17     0.00000 0.00000
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-       0.00000 0.00000 3.74940e-33     1.87470e-33
-       -1.53081e-17    9.37350e-34     3.06162e-17     1.53081e-17
-       -3.06162e-17    0.00000 0.00000 0.00000
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-       -1.53081e-17    -9.37350e-34    -3.06162e-17    1.53081e-17
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-       0.00000 0.00000 3.74940e-33     -1.87470e-33
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-       -9.37350e-34    1.53081e-17     3.06162e-17     -1.53081e-17
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        0.125000        0.125000        -0.250000       0.125000
-       9.37350e-34     1.53081e-17     -3.06162e-17    1.53081e-17
-       0.00000 0.00000 3.74940e-33     -1.87470e-33
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-       -1.53081e-17    -1.53081e-17    -1.87470e-33    1.53081e-17
-       -3.06162e-17    0.00000 0.00000 0.00000
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+       0.00000 0.00000 0.00000 0.00000
+       0.00000 0.00000 0.00000 0.00000
        0.00000 0.00000 0.00000 0.00000
 attribute "dep" string "positions"
 object "deal data" class field

diff --git a/tests/base/functions_01/cmp/i686-pc-linux-gnu+gcc3.3 b/tests/base/functions_01/cmp/i686-pc-linux-gnu+gcc3.3
deleted file mode 100644 (file)
index e2ed5ef..0000000
--- a/tests/base/functions_01/cmp/i686-pc-linux-gnu+gcc3.3
+++ /dev/null
@@ -1,485 +0,0 @@
-object "vertices" class array type float rank 1 shape 2 items 25 data follows
--1     -1      
--0.5   -1      
-0      -1      
-0.5    -1      
-1      -1      
--1     -0.5    
--0.5   -0.5    
-0      -0.5    
-0.5    -0.5    
-1      -0.5    
--1     0       
--0.5   0       
-0      0       
-0.5    0       
-1      0       
--1     0.5     
--0.5   0.5     
-0      0.5     
-0.5    0.5     
-1      0.5     
--1     1       
--0.5   1       
-0      1       
-0.5    1       
-1      1       
-object "cells" class array type int rank 1 shape 4 items 16 data follows
-0      5       1       6
-1      6       2       7
-2      7       3       8
-3      8       4       9
-5      10      6       11
-6      11      7       12
-7      12      8       13
-8      13      9       14
-10     15      11      16
-11     16      12      17
-12     17      13      18
-13     18      14      19
-15     20      16      21
-16     21      17      22
-17     22      18      23
-18     23      19      24
-
-attribute "element type" string "quads"
-attribute "ref" string "positions"
-object "data" class array type float rank 1 shape 3 items 25 data follows
-       4.26453 -4.26453        6.99401e-14
-       4.04692 -3.18452        -0.633437
-       3.64683 -1.9805 -1.59808
-       3.03204 -1.05036        -2.33684
-       2.47239 -0.566216       -2.55657
-       3.18452 -4.04692        0.633437
-       2.92392 -2.92392        9.59071e-14
-       2.5004  -1.3579 -2.1914
-       1.69516 -0.388218       -3.50576
-       1.2366  -0.154216       -3.29301
-       1.9805  -3.64683        1.59808
-       1.3579  -2.5004 2.1914
-       0       0       0
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-       1.05036 -3.03204        2.33684
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-attribute "dep" string "positions"
-object "deal data" class field
-component "positions" value "vertices"
-component "connections" value "cells"
-component "data" value "data"
-attribute 
-end
-object "vertices" class array type float rank 1 shape 2 items 25 data follows
--1     -1      
--0.5   -1      
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-3      8       4       9
-5      10      6       11
-6      11      7       12
-7      12      8       13
-8      13      9       14
-10     15      11      16
-11     16      12      17
-12     17      13      18
-13     18      14      19
-15     20      16      21
-16     21      17      22
-17     22      18      23
-18     23      19      24
-
-attribute "element type" string "quads"
-attribute "ref" string "positions"
-object "data" class array type float rank 1 shape 3 items 25 data follows
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-attribute "dep" string "positions"
-object "deal data" class field
-component "positions" value "vertices"
-component "connections" value "cells"
-component "data" value "data"
-attribute 
-end
-object "vertices" class array type float rank 1 shape 3 items 125 data follows
--1     -1      -1      
--0.5   -1      -1      
-0      -1      -1      
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-attribute "element type" string "cubes"
-attribute "ref" string "positions"
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-attribute "dep" string "positions"
-object "deal data" class field
-component "positions" value "vertices"
-component "connections" value "cells"
-component "data" value "data"
-attribute 
-end