[pygsl-discuss] functions from macro expansions

[Jochen <jo...@jo...>]

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In statistics/functions.c are macros that expand to C functions that
are the actual wrappers around the GSL functions and are called from
Python.

Using these functions the pygsl wrapper around gsl_stats_mean looks
like
,----
| STATMOD_FUNCTION_d_A(mean)
`----

I propose we create a header file <pygsl>/srs/functions.h that
provides these macros (generalized for any submodule) so they can be
used from any submodule that needs such wrappers -- as many do.

I am willing to write up this header file and to change the statistics
module to use it, so there is an example for further modules.

I am asking for comments.

Greetings,
Jochen
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