jichao zhao

I have met with some errors when I run psn_3d_make

something wrong in the code:

test_nonlinear_diffusion
Mex file entry point is missing. Please check the (case-sensitive)
spelling of mexFunction (for C MEX-files), or the (case-insensitive)
spelling of MEXFUNCTION (for FORTRAN MEX-files).
??? Invalid MEX-file '/Nonlinear_Diffusion/thomas_mex.mexa64': .

Error in ==> Nonlinear_Diffusion>solve_tridiagonal at 168
U = thomas_mex(b,c,a,U)';

Error in ==> Nonlinear_Diffusion>solve_semi_implicit_scheme at 202
        U_bt = solve_tridiagonal(U((ixstart+1):(ixstart+N)),gs,ix_v,ix_v+N,ix_v+4*N,ixy,ixx,N,ax,tau,2); % top and bottom

Error in ==> Nonlinear_Diffusion at 118
    [U] = solve_semi_implicit_scheme(U,g_arg_sq,ix_v,N,d,w,ax,tau,p,eps2,ixx,ixy,ix_ch_lr);

Error in ==> test_nonlinear_diffusion at 5
[Zebra1] = Nonlinear_Diffusion(double(zebra),1,1e-2,1,20,0, 0);