[S03-operators/overflow.t] better test labels; moritz++ for suggestion

S03-operators/overflow.t

@@ -148,9 +148,9 @@ sub tryeq_sloppy ($lhs, $rhs, $todo1 = '') {
 }
 
 {
-    is 2147483648 - 0, 2147483648, '2147483648 = 2147483648';
-    is -2147483648 - 0, -2147483648, '-2147483648 = -2147483648';
-    is 2000000000 - 4000000000, -2000000000, '-2000000000 = -2000000000';
+    is 2147483648 - 0, 2147483648, '2147483648 - 0 == 2147483648';
+    is -2147483648 - 0, -2147483648, '-2147483648 - 0 == -2147483648';
+    is 2000000000 - 4000000000, -2000000000, '2000000000 - 4000000000 == -2000000000';
 }
 
 # Believe it or not, this one overflows on 32-bit Rakduo as of 3/8/2010.
@@ -170,26 +170,26 @@ sub tryeq_sloppy ($lhs, $rhs, $todo1 = '') {
     # On a 32 bit machine, if the i_multiply op is used, you will probably get
     # -167772160. It's actually undefined behaviour, so anything may happen.
     my $int = ($n % 1000) * 167772160;
-    is $int, 21307064320, "$int = 21307064320";
+    is $int, 21307064320, '(1127 % 1000) * 167772160 == 21307064320';
 
 }
 
 {
-    is -1 - -2147483648, 2147483647, '2147483647 = 2147483647';
-    is 2 - -2147483648, 2147483650, '2147483650 = 2147483650';
+    is -1 - -2147483648, 2147483647, '-1 - -2147483648 == 2147483647';
+    is 2 - -2147483648, 2147483650, '2 - -2147483648 == 2147483650';
 
-    is 4294967294 - 3, 4294967291, '4294967291 = 4294967291';
-    is -2147483648 - -1, -2147483647, '-2147483647 = -2147483647';
+    is 4294967294 - 3, 4294967291, '4294967294 - 3 == 4294967291';
+    is -2147483648 - -1, -2147483647, '-2147483648 - -1 == -2147483647';
 
     # IV - IV promote to UV
-    is 2147483647 - -1, 2147483648, '2147483648 = 2147483648';
-    is 2147483647 - -2147483648, 4294967295, '4294967295 = 4294967295';
+    is 2147483647 - -1, 2147483648, '2147483647 - -1 == 2147483648';
+    is 2147483647 - -2147483648, 4294967295, '2147483647 - -2147483648 == 4294967295';
     # UV - IV promote to NV
-    is 4294967294 - -3, 4294967297, '4294967297 = 4294967297';
+    is 4294967294 - -3, 4294967297, '4294967294 - -3 == 4294967297';
     # IV - IV promote to NV
-    is -2147483648 - +1, -2147483649, '-2147483649 = -2147483649';
+    is -2147483648 - +1, -2147483649, '-2147483648 - +1 == -2147483649';
     # UV - UV promote to IV
-    is 2147483648 - 2147483650, -2, '-2 = -2';
+    is 2147483648 - 2147483650, -2, '2147483648 - 2147483650 == -2';
 }
 
 # check with 0xFFFF and 0xFFFF