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numerics/example/BLAS/cxx_main.cpp
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43
44#include "Teuchos_BLAS.hpp"
45#include "Teuchos_Version.hpp"
46
47int main(int argc, char* argv[])
48{
49 std::cout << Teuchos::Teuchos_Version() << std::endl << std::endl;
50
51 // Creating an instance of the BLAS class for double-precision kernels looks like:
53
54 // This instance provides the access to all the BLAS kernels listed in Figure \ref{blas_kernels}:
55 const int n = 10;
56 double alpha = 2.0;
57 double x[ n ];
58 for ( int i=0; i<n; i++ ) { x[i] = i; }
59 blas.SCAL( n, alpha, x, 1 );
60 int max_idx = blas.IAMAX( n, x, 1 );
61 std::cout<< "The index of the maximum magnitude entry of x[] is the "
62 << max_idx <<"-th and x[ " << max_idx-1 << " ] = "<< x[max_idx-1]
63 << std::endl;
64
65 return 0;
66}
Templated interface class to BLAS routines.
Concrete serial communicator subclass.
int main()
Definition evilMain.cpp:75
std::string Teuchos_Version()