On Fri, 17 Jun 2011 22:59:54 +0100, Brian Gough <b...@gnu.org> wrote: > At Thu, 16 Jun 2011 13:07:07 -0500, > Waclaw Kusnierczyk wrote: >> I can't find appropriate routines in the interface -- I'm thinking about >> something like >> >> int nrows = gsl_matrix_size1(const gsl_matrix *m); >> >> It's possible to write code like >> >> int nrows = m->size1; >> >> but I'd prefer to avoid breaking the abstraction barrier. > > No need to worry about that - the matrix and vector structs are part > of the API, it is ok to use the struct parameters for them. They > definitely won't change.
That's right, the struct content is made explicit in the docs, so it doesn't feel that bad to use it directly. (I come from a tradition in programming where abstraction rules, hence the hesitation. But direct access to the components will surely be more efficient than calling a function, unless inlined.) > If it's a concern you can wrap them in a macro. That's probably the most elegant and efficient approach in this case. The alternative of an inline function might be an overkill for the need. Thanks. vQ _______________________________________________ Help-gsl mailing list Help-gsl@gnu.org https://lists.gnu.org/mailman/listinfo/help-gsl
