Hello, I am using the excellent gsll package (in the first instance), to provide an interface to quadpack for the mathematics system FriCAS. I'm slowly going through calculus/numerical-integration.lisp one function at a time and writing each one into FriCAS as I go. This means writing functions in FriCAS's own language SPAD which interface with gsll. This is made harder by me being a lisp newbie. However, I've come to integration-QAGP, and I've tried to run the test command (having first defined the function it calls). However, all I get is errors. I'm using SBCL in emacs-slime, and I have installed gsll with quicklisp, so that I can call an integration routine with * (gsll:integration-qng (lambda (x) (exp (- (* x x)))) 0.0 1.0) But the commands * (defun integration-test-f454 (x) (* (expt x 3) (* (log (abs (* (- (expt x 2) 1.0d0) (- (expt x 2) 2.0d0))))))) * (gsll:integration-QAGp 'integration-test-f454 (grid:copy-to (vector 0.0d0 1.0d0 (sqrt 2.0d0) 3.0d0)) 0.0d0 1.0d-3 1000) just produces a long list of errors. Is "grid" a standard library, or does it need to be loaded first? (Told you I was a newbie...) Thanks Alasdair -- [image: http://www.facebook.com/alasdair.mcandrew] <http://www.facebook.com/alasdair.mcandrew> [image: https://plus.google.com/+AlasdairMcAndrew/posts] <https://plus.google.com/+AlasdairMcAndrew/posts> [image: https://www.linkedin.com/pub/alasdair-mcandrew/a/178/108] <https://www.linkedin.com/pub/alasdair-mcandrew/a/178/108> [image: https://twitter.com/amca01] <https://twitter.com/amca01> [image: http://numbersandshapes.net] <http://numbersandshapes.net>