Hi, I am looking through the new Lapack library (Lapack2) https://code.jsoftware.com/wiki/Vocabulary/LAPACK
I followed the example on that page and it worked fine (QR factorization). Now I want to use Cholesky Decomposition ( http://www.netlib.org/lapack/explore-html/d6/daf/a18565_ga2f55f604a6003d03b5cd4a0adcfb74d6.html ) The signature of which is NB. dpotrf n *c *i *d *i *i M=: 3 3 $ 2 _1 0 _1 2 _1 0 _1 2 NB. 3x3 ppositive-definite matrix dpotrf_jlapack2_'U';3;(M);3;_1 This give s domain error |domain error: cd Any help appreciated on using this lapack function. Regards, Jon ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
