[cache.c] improved comment for mpfr_init_cache

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@6077 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 2 insertions, 1 deletions

diff --git a/cache.c b/cache.c
index df922f7c8..acbf4fa97 100644
--- a/cache.c
+++ b/cache.c
@@ -23,7 +23,8 @@ http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
 #include "mpfr-impl.h"
 
 #if 0 /* this function is not used/documented/tested so far, it could be
-         useful if we want to export the cache mechanism */
+         useful if some user wants to add a new constant to mpfr, and
+         implement a cache mechanism for that constant */
 void
 mpfr_init_cache (mpfr_cache_t cache, int (*func)(mpfr_ptr, mp_rnd_t))
 {