does anybody have numerical recipe in c++? I need the subroutine to solve

A x = b with A being symmetric.

I tried to use clapack. The software won’t allow me to call the BLAS fortran

subroutines. Thanks ahead.

I have it, but how to give it to you?

I suggest that, try IT++, it is for c++, very easy to us, and has almost every

thing for matrix calculations.

Thanks. I am using TNT from netlib. It seems good. It does not fail even

for singular A.

BTW, what is IT++?

IT++ is a C++ library of mathematical, signal processing, speech processing,

and communications classes and functions.

http://itpp.sourceforge.net/

It can deal with matrix calculations very simple. Such:

M.eig() will give you the eigenvalues of M.

you can look the website.

I used TNT before, not bad.

有没有试过GSL?

我觉得很多时候GSL比numerical recipe好用，而且是GPL的

what is GSL? I never use C++ to write any program for numerical computations.

Tired of Fortran77. Wanna try C++ for next project.