[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Bug-gsl] [bug #39990] Use standard function names for Mathieu function

From: Patrick Alken
Subject: [Bug-gsl] [bug #39990] Use standard function names for Mathieu function calls
Date: Mon, 09 Sep 2013 17:53:59 +0000
User-agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:22.0) Gecko/20100101 Firefox/22.0


                 Summary: Use standard function names for Mathieu function
                 Project: GNU Scientific Library
            Submitted by: psa
            Submitted on: Mon 09 Sep 2013 05:53:58 PM GMT
                Category: None
                Severity: 3 - Normal
        Operating System: 
                  Status: None
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any



The GSL special functions are each supposed to have two alternative
functional interfaces, a pure one:

double function(x, ...)

and one allowing for full error returns:

int function_e(x, ...  gsl_sf_result * result)

But the Mathieu function code doesn't follow this convention.

It doesn't offer the former interface at all and uses the second
convention for all its functions BUT without the '_e' name extension on
its function declarations. 

This is quite error prone since it is easy to assume that *gsl_sf_result
is simply a reference to a double when in fact it is a structure that is
longer than this (a library user on Windows made exactly this mistake
and wondered why his code was causing an illegal access exception).

I am doubtful that this is an intentional feature of the Mathieu
function code so I have created the attached patch to update the code to
use the normal conventions of the GSL special functions.  (this needs
testing since I have only tried it on WIndows).


Reply to this item at:


  Message sent via/by Savannah

reply via email to

[Prev in Thread] Current Thread [Next in Thread]