Looking for the Source code of built in function ldl.m

Dear All,

I am trying to use Matlab Coder to convert my Matlab code into C code. But there are a number of built in functions that Matlab Coder does not support. ldl.m is one of those functions. It seems that I have to rewrite ldl.m on my own so that I can use Matlab Coder. But it will be a huge work for me to write it on my own,

I am wondering if I can have the source code of ldl.m. If I can, then I could insert ldl.m as a sub-function in my code. I think I can use Matlab Coder to generate the C code. Does anybody know how to assecc to the source code of ldl.m?

Thanks in advance.

Benson

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/matlab/ref/ldl.html#bqw1rh1-1

ldl uses the MA57 routines in the Harwell Subroutine Library (HSL) for real sparse matrices.

The Fortran source for MA57 is available from http://www.hsl.rl.ac.uk/ipopt/ under certain license conditions.

Answer 2

[Steven Lord]

The ldl function is built into MATLAB. It is not implemented as a MATLAB script, function, or class file. We don't distribute its source code.