Add descriptions to tests for exp.t

1 files changed, 16 insertions, 16 deletions

diff --git a/t/op/exp.t b/t/op/exp.t
index 9bc44b49b4..d132b1f1c2 100644
--- a/t/op/exp.t
+++ b/t/op/exp.t
@@ -11,24 +11,24 @@ plan tests => 16;
 # compile time evaluation
 
 $s = sqrt(2);
-is(substr($s,0,5), '1.414');
+is(substr($s,0,5), '1.414', 'compile time sqrt(2) == 1.414');
 
 $s = exp(1);
-is(substr($s,0,7), '2.71828');
+is(substr($s,0,7), '2.71828', 'compile time exp(1) == e');
 
-cmp_ok(exp(log(1)), '==', 1);
+cmp_ok(exp(log(1)), '==', 1, 'compile time exp(log(1)) == 1');
 
 # run time evaluation
 
 $x1 = 1;
 $x2 = 2;
 $s = sqrt($x2);
-is(substr($s,0,5), '1.414');
+is(substr($s,0,5), '1.414', 'run time sqrt(2) == 1.414');
 
 $s = exp($x1);
-is(substr($s,0,7), '2.71828');
+is(substr($s,0,7), '2.71828', 'run time exp(1) = e');
 
-cmp_ok(exp(log($x1)), '==', 1);
+cmp_ok(exp(log($x1)), '==', 1, 'run time exp(log(1)) == 1');
 
 # tests for transcendental functions
 
@@ -41,18 +41,18 @@ sub round {
 }
 
 # sin() tests
-cmp_ok(sin(0), '==', 0.0);
-cmp_ok(round(sin($pi)), '==', 0.0);
-cmp_ok(round(sin(-1 * $pi)), '==', 0.0);
-cmp_ok(round(sin($pi_2)), '==', 1.0);
-cmp_ok(round(sin(-1 * $pi_2)), '==', -1.0);
+cmp_ok(sin(0), '==', 0.0, 'sin(0) == 0');
+cmp_ok(round(sin($pi)), '==', 0.0, 'sin(pi) == 0');
+cmp_ok(round(sin(-1 * $pi)), '==', 0.0, 'sin(-pi) == 0');
+cmp_ok(round(sin($pi_2)), '==', 1.0, 'sin(pi/2) == 1');
+cmp_ok(round(sin(-1 * $pi_2)), '==', -1.0, 'sin(-pi/2) == -1');
 
 # cos() tests
-cmp_ok(cos(0), '==', 1.0);
-cmp_ok(round(cos($pi)), '==', -1.0);
-cmp_ok(round(cos(-1 * $pi)), '==', -1.0);
-cmp_ok(round(cos($pi_2)), '==', 0.0);
-cmp_ok(round(cos(-1 * $pi_2)), '==', 0.0);
+cmp_ok(cos(0), '==', 1.0, 'cos(0) == 1');
+cmp_ok(round(cos($pi)), '==', -1.0, 'cos(pi) == -1');
+cmp_ok(round(cos(-1 * $pi)), '==', -1.0, 'cos(-pi) == -1');
+cmp_ok(round(cos($pi_2)), '==', 0.0, 'cos(pi/2) == 0');
+cmp_ok(round(cos(-1 * $pi_2)), '==', 0.0, 'cos(-pi/2) == 0');
 
 # atan2() tests were removed due to differing results from calls to
 # atan2() on various OS's and architectures.  See perlport.pod for