Using GDB with the Eigen C ++ Library

Question

I am using the Eigen C ++ library, downloaded from http://eigen.tuxfamily.org/ . This is a C ++ library to simplify the processing of matrices and arrays. I use the g ++ compiler and gdb for debugging. However, I found that I could not print the contents of the matrix (provided by Eigen) when using gdb.

Answer 1

You have a gdb extension that you can find in eigen / debug / gdb /

Answer 2

, , .data(), , . GDB :

print *X.data()@Length_X

X - , Length_X - .