tsystem tan() is probably good enough - plan9port - [fork] Plan 9 from user space
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       ---
 (DIR) commit 12e997d87c3f057018fb8f3411cd9676b416cc04
 (DIR) parent af6e459f18e56924a79fc7e732562132ee88fd22
 (HTM) Author: rsc <devnull@localhost>
       Date:   Fri, 21 Apr 2006 04:00:56 +0000
       
       system tan() is probably good enough
       
       Diffstat:
         M src/cmd/map/libmap/zcoord.c         |       6 ------
       
       1 file changed, 0 insertions(+), 6 deletions(-)
       ---
 (DIR) diff --git a/src/cmd/map/libmap/zcoord.c b/src/cmd/map/libmap/zcoord.c
       t@@ -123,12 +123,6 @@ norm(struct place *gg, struct place *pp, struct coord *tw)
                        g->wlon.l += 2*PI;
        }
        
       -double
       -tan(double x)
       -{
       -        return(sin(x)/cos(x));
       -}
       -
        void
        printp(struct place *g)
        {