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test.cc File Reference

#include <iostream.h>
#include <gslwrap/matrix_float.h>
#include <gslwrap/matrix_double.h>
#include <gslwrap/vector_float.h>
#include <gslwrap/vector_int.h>
#include <gslwrap/vector_double.h>
#include <gslwrap/random_generator.h>

Go to the source code of this file.

Functions

void test_vector ()
void vector_float_test ()
void VectorViewTest ()
void VectorViewTest2 ()
void VectorViewTest3 ()
void gsl_function_call_test ()
void RandomNumberGeneratorTest ()
int main (int argc, char **argv)


Function Documentation

void RandomNumberGeneratorTest ( )
 

Definition at line 138 of file test.cc.

Referenced by main().

00139 {
00140         cout << "RandomNumberGeneratorTest -------------------" << endl;
00141         random_generator generator; // default constructor takes seed from ENV variable
00142         int nSamples=10000;
00143         gsl::vector samples(nSamples);
00144         for (int i=0;i<nSamples;i++)
00145                 samples[i] = generator.uniform();
00146 
00147         double mean=samples.sum()/(float)nSamples;
00148         cout << "Mean of sampling : " <<  mean << endl;
00149         // should be close to 0.5
00150         if (mean <0.51 && mean >0.49)
00151                 cout << "RandomNumberGeneratorTest Passed !! -------------" << endl;
00152         else 
00153         {
00154                 cout << "RandomNumberGeneratorTest Failed !! -------------" << endl;
00155                 exit(-1);
00156         }
00157 }

void VectorViewTest ( )
 

Definition at line 38 of file test.cc.

Referenced by main().

00039 {
00040         cout << "VectorViewTest --------------------------" << endl;
00041         int i,j;
00042         int size=5;
00043         matrix_float m(size, size);
00044         matrix_float ver(size, size);ver.set_all(5.0);
00045         vector_float v(size);
00046         for (i=0;i<size;i++)
00047         {
00048                 v[i]=size-(i+1);
00049                 for (j=0;j<size;j++)
00050                         m(i,j)=(i+1);
00051         }
00052         cout << "m=" << endl << m << endl;
00053         cout << "v=" << endl << v << endl;
00054 
00055         vector_float_view col_viewer = m.column(3);
00056         vector_float_view viewer = m.row(3);
00057         cout << "viewer (3.row before adding)=" << endl << viewer << endl;
00058         cout << "col_viewer (3.col before adding)=" << endl << col_viewer << endl;
00059         for (i=0;i<m.get_cols();i++)
00060                 m.column(i) += v;
00061 
00062         cout << "viewer (3.row after adding) =" << endl << viewer << endl;
00063         cout << "col_viewer (3.col after adding)=" << endl << col_viewer << endl;
00064         cout << "\"m+v\"" << endl << m << endl;
00065         
00066         col_viewer.change_view(viewer);
00067         cout << "col_viewer after changing to viewer=" << endl << col_viewer << endl;
00068 
00069         if (m!=ver || m.column(0)!=viewer || col_viewer!=viewer) 
00070                 cout << "VectorViewTest failed !! ----------------" << endl;
00071         else 
00072                 cout << "VectorViewTest passed !! ----------------" << endl;
00073         
00074 }

void VectorViewTest2 ( )
 

Definition at line 76 of file test.cc.

Referenced by main().

00077 {
00078         cout << "VectorViewTest2 ----------------------------" << endl;
00079         matrix m1(10,10);
00080         matrix m2(10,10);
00081         vector v(10);
00082         int i;
00083 
00084         for (i=0;i<10; i++){v[i]=i*2;}
00085 
00086         for (i=0;i<10; i++)
00087         {
00088                 m1.column(i) = v;
00089                 m2.column(i) = v;
00090         }
00091 
00092         for (i=0;i<10; i++)
00093                 m1.column(i) -= m2.column(i);
00094 
00095         cout << "Sum m1-m2 (m1==m2) : " << m1.sum() << endl;
00096         if (m1.sum())
00097         {
00098                 cout << "VectorViewTest2 Failed !! (operator -= ?) " << endl;
00099                 exit(-1);
00100         }
00101         else 
00102                 cout << "VectorViewTest2 Passed !! -------------------------" << endl;
00103 }

void VectorViewTest3 ( )
 

Definition at line 105 of file test.cc.

Referenced by main().

00106 {
00107         vector v(10);
00108         vector_view view1 = v;
00109         vector_view view2 = v;
00110         view2 = view1;
00111 }

void gsl_function_call_test ( )
 

Definition at line 114 of file test.cc.

Referenced by main().

00115 {
00116         int size=5;
00117         matrix m(size,size);
00118         for (int i=0;i<size;i++)
00119                 for (int j=0;j<size;j++)
00120                         m(i,j) = (i+1)*(j+1);
00121         double lndet = gsl_linalg_LU_lndet(m.gslobj());
00122         cout << "m = " << m << endl;
00123         cout << "lndet(m) = " << lndet << endl;
00124 
00125         gsl::vector sol(size);
00126         for (int k=0;k<size;k++)
00127                 sol[k]=k+1;
00128         cout << "Solution of " << m << " x= " << sol <<endl;
00129 
00130         gsl::vector tau(size);
00131         gsl_linalg_QR_decomp(m.gslobj(), tau.gslobj());
00132         gsl_linalg_QR_svx(m.gslobj(), tau.gslobj(), sol.gslobj());
00133         
00134         cout << "sol= " << sol << endl;
00135 }

int main ( int argc,
char ** argv )
 

Definition at line 159 of file test.cc.

00160 {
00161      matrix a( 3, 3 );
00162      matrix b( 3, 3 );
00163      srand48(10);
00164 
00165      int i, j;
00166      for(i=0;i<a.size1();i++)
00167            for(j=0;j<a.size2();j++) a(i,j)=drand48();
00168      for(i=0;i<b.size1();i++)
00169            for(j=0;j<b.size2();j++) b(i,j)=drand48();
00170 
00171      cout << "a:" << endl << a << endl;
00172      cout << "b:" << endl << b << endl;
00173 
00174      cout << "a + b:" << endl << a + b << endl;
00175      cout << "a - b:" << endl << a - b << endl;
00176      cout << "a + 1.0:" << endl << a + 1.0 << endl;
00177      cout << "1.0 - a:" << endl << 1.0 - a << endl;
00178      cout << "a * 10.0:" << endl << a * 10.0 << endl;
00179      cout << "10.0 * a:" << endl << 10.0 * a << endl;
00180      cout << "a / 10.0:" << endl << a / 10.0 << endl;
00181      cout << "a * b:" << endl << a * b << endl;
00182      cout << "a.LU_decomp():" << endl << a.LU_decomp() << endl;
00183      cout << "a.LU_invert():" << endl << a.LU_invert() << endl;
00184      cout << "a.LU_invert() * a:" << endl << a.LU_invert() * a << endl;
00185 
00186      // call class test functions (there should be one per class)
00187          vector_float_test();
00188          gsl_function_call_test();
00189      VectorViewTest();
00190          RandomNumberGeneratorTest();
00191          VectorViewTest2();
00192          VectorViewTest3();
00193 }

void test_vector ( )
 

Definition at line 11 of file test.cc.

00012 {
00013         gsl::vector vd(10);
00014         gsl::vector_float  vf(10);
00015         gsl::vector_int    vi(10);
00016 }

void vector_float_test ( )
 

Definition at line 20 of file test.cc.

Referenced by main().

00021 {
00022         vector_float test;
00023         vector_float mal(10);
00024         for (int i=0; i<10; i++)
00025         {mal[i] = i;}
00026 
00027         test = mal;
00028         cout << "Test vector should be:" << endl <<mal<< endl;
00029         cout << "Test vector is:" << endl <<test<< endl;
00030         
00031         if (mal != test)
00032                 cout << "vector_float ERROR Test did not pass !! --------------" << endl;
00033         else 
00034                 cout << "vector_float Test passed !! --------------" << endl;
00035 }


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