Re: [ID 20010529.003] find2perl and File::Find doesn't emulate find when path is...

[p5sagit/p5-mst-13.2.git] / t / lib / trig.t

diff --git a/t/lib/trig.t b/t/lib/trig.t
index 0b7e0cb..4246a47 100755 (executable)
--- a/t/lib/trig.t
+++ b/t/lib/trig.t
@@ -10,7 +10,7 @@
 
 BEGIN {
     chdir 't' if -d 't';
-    unshift @INC, '../lib';
+    @INC = '../lib';
 }
 
 use Math::Trig;
@@ -26,10 +26,11 @@ if ($^O eq 'unicos') { # See lib/Math/Complex.pm and t/lib/complex.t.
 }
 
 sub near ($$;$) {
-    abs($_[0] - $_[1]) < (defined $_[2] ? $_[2] : $eps);
+    my $e = defined $_[2] ? $_[2] : $eps;
+    $_[1] ? (abs($_[0]/$_[1] - 1) < $e) : abs($_[0]) < $e;
 }
 
-print "1..24\n";
+print "1..26\n";
 
 $x = 0.9;
 print 'not ' unless (near(tan($x), sin($x) / cos($x)));
@@ -158,23 +159,42 @@ use Math::Trig ':radial';
 }
 
 {
+    my $R2D = 57.295779513082320876798154814169;
+
+    sub frac { $_[0] - int($_[0]) }
+
     my $lotta_radians = deg2rad(1E+20, 1);
-    print "not " unless near($lotta_radians,  1E+20/57.29577951308232087721);
+    print "not " unless near($lotta_radians,  1E+20/$R2D);
     print "ok 21\n";
 
     my $negat_degrees = rad2deg(-1E20, 1);
-    print "not " unless near($negat_degrees, -1E+20*57.29577951308232087721);
+    print "not " unless near($negat_degrees, -1E+20*$R2D);
     print "ok 22\n";
 
     my $posit_degrees = rad2deg(-10000, 1);
-    print "not " unless near($posit_degrees, -10000*57.29577951308232087721);
-
+    print "not " unless near($posit_degrees, -10000*$R2D);
     print "ok 23\n";
+}
 
-    my $posiu_degrees = rad2deg(-10000, 0);
-    print "not " unless near($posiu_degrees, -197.795130823273);
+{
+    use Math::Trig 'great_circle_direction';
 
+    print 'not '
+       unless (near(great_circle_direction(0, 0, 0, pi/2), pi));
     print "ok 24\n";
+
+    print 'not '
+       unless (near(great_circle_direction(0, 0, pi, pi), -pi()/2));
+    print "ok 25\n";
+
+    # London to Tokyo.
+    my @L = (deg2rad(-0.5), deg2rad(90 - 51.3));
+    my @T = (deg2rad(139.8),deg2rad(90 - 35.7));
+
+    my $rad = great_circle_direction(@L, @T);
+
+    print 'not ' unless (near($rad, -0.546644569997376));
+    print "ok 26\n";
 }
 
 # eof