Hi! I'm having some numerical problems using GMM. Consider the following test program:
************************************* gmm::row_matrix<gmm::rsvector<double> > M(1, 1); M(0, 0) = 0.9; std::complex<double> u = 1.0; std::cout << M(0, 0) << std::endl; std::cout << u << std::endl; std::cout << u*M(0, 0) << std::endl; std::cout << u*double(M(0, 0)) << std::endl; ************************************* It prints: ************ 0.9 (1,0) (0,0) (0.9,0) ************* But the third line should not be 0. For some reason, I have to explicitly cast to double to get the correct result for the multiplication, as I have done in the line corresponding to the fourth printed line. I'm using the GetFEM SVN revision 5217, and my test program is compiled with the following command: /usr/bin/mpicxx -DBOOST_SYSTEM_NO_DEPRECATED -I/usr/include/petsc -I/home/tmac/usr/include -std=c++14 -Wfatal-errors -Wall -Wno-unknown-pragmas -Wno-deprecated-declarations -Wno-unused-local-typedefs -fdiagnostics-show-option -DGMM_USES_BLAS -I/home/tmac/usr/stow/getfem/include -DGMM_USES_LAPACK -I/home/tmac/usr/stow/getfem/include -ggdb -o CMakeFiles/bug.exe.dir/bug.cpp.o -c /home/tmac/research/bug.cpp Some more info: $ getfem-config --configure-args '--prefix=/home/tmac/usr/stow/getfem' '--enable-shared' '--with-pic' '--disable-python' '--disable-matlab' '--disable-scilab' '--disable-mumps' '--disable-par-mumps' 'MPICXX=mpicxx' 'CXXFLAGS=-I/home/tmac/usr/include' 'LDFLAGS=-L/home/tmac/usr/lib -L/home/tmac/usr/lib64' 'MPICC=mpicc' 'CFLAGS=-I/home/tmac/usr/include' 'MPIFC=mpif90' $ gcc --version gcc (Debian 5.3.1-5) 5.3.1 20160101 $ getfem-config --build-flags -I/home/tmac/usr/include -O3 -Wall -W -fmessage-length=0 -ftemplate-depth-100 -std=c++11 -fPIC -pedantic -Wshadow -Wno-unknown-pragmas -Wno-variadic-macros -Wno-unused-but-set-variable -Wpointer-arith -Wcast-qual -Wwrite-strings -Wconversion -Wredundant-decls -Wno-long-long $ getfem-config --cflags -DGMM_USES_BLAS -I/home/tmac/usr/stow/getfem/include -DGMM_USES_LAPACK -I/home/tmac/usr/stow/getfem/include Torquil _______________________________________________ Getfem-users mailing list [email protected] https://mail.gna.org/listinfo/getfem-users
