[Bug-gsl] gsl_permutation header files

[Brijesh Upadhaya]

Hi!

The part of gsl-2.5 documentation that describes the functions related to
permutations says
"The functions described in this chapter are defined in the header file
gsl_permutation.h"

However, I got a warning: implicit declaration of function
‘gsl_permute_matrix’, thus, I looked into the header files in /include/gsl
and found out that gsl_permutation.h didn't include gsl_permute_matrix.h.

This probably is not a bug as I added gsl_permute_matrix.h and compiled my
program. However, it wasn't mentioned in the online documentation.

Kind regards,
Brijesh