An ambiguousity warning.

p4raw-id: //depot/perl@9510

diff --git a/t/lib/trig.t b/t/lib/trig.t
index def7c15..4246a47 100755 (executable)
--- a/t/lib/trig.t
+++ b/t/lib/trig.t
@@ -184,7 +184,7 @@ use Math::Trig ':radial';
     print "ok 24\n";
 
     print 'not '
-       unless (near(great_circle_direction(0, 0, pi, pi), -pi/2));
+       unless (near(great_circle_direction(0, 0, pi, pi), -pi()/2));
     print "ok 25\n";
 
     # London to Tokyo.