On Sun, Nov 1, 2015 at 5:10 AM, Alasdair McAndrew amca01@gmail.com wrote:
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 --
Try this
(setf grid:*default-grid-type* 'grid:foreign-array) (gsll:integration-QAGp 'integration-test-f454 (grid:grid 0.0d0 1.0d0 (sqrt 2.0d0) 3.0d0) 0.0d0 1.0d-3 1000)
and let us know what happens.
Thanks, Liam