st_blocks is in 512 byte blocks.

[p5sagit/p5-mst-13.2.git] / t / op / bop.t

diff --git a/t/op/bop.t b/t/op/bop.t
old mode 100644 (file)
new mode 100755 (executable)
index 8ebf8d3..0c5ef48
--- a/t/op/bop.t
+++ b/t/op/bop.t
@@ -1,24 +1,64 @@
 #!./perl
 
 #
-# test the bit operators '&', '|' and '^'
+# test the bit operators '&', '|', '^', '~', '<<', and '>>'
 #
 
-print "1..9\n";
+BEGIN {
+    chdir 't' if -d 't';
+    unshift @INC, '../lib';
+}
+
+print "1..18\n";
 
 # numerics
 print ((0xdead & 0xbeef) == 0x9ead ? "ok 1\n" : "not ok 1\n");
 print ((0xdead | 0xbeef) == 0xfeef ? "ok 2\n" : "not ok 2\n");
 print ((0xdead ^ 0xbeef) == 0x6042 ? "ok 3\n" : "not ok 3\n");
+print ((~0xdead & 0xbeef) == 0x2042 ? "ok 4\n" : "not ok 4\n");
+
+# shifts
+print ((257 << 7) == 32896 ? "ok 5\n" : "not ok 5\n");
+print ((33023 >> 7) == 257 ? "ok 6\n" : "not ok 6\n");
+
+# signed vs. unsigned
+print ((~0 > 0 && do { use integer; ~0 } == -1)
+       ? "ok 7\n" : "not ok 7\n");
+
+my $bits = 0;
+for (my $i = ~0; $i; $i >>= 1) { ++$bits; }
+my $cusp = 1 << ($bits - 1);
+
+print ((($cusp & -1) > 0 && do { use integer; $cusp & -1 } < 0)
+       ? "ok 8\n" : "not ok 8\n");
+print ((($cusp | 1) > 0 && do { use integer; $cusp | 1 } < 0)
+       ? "ok 9\n" : "not ok 9\n");
+print ((($cusp ^ 1) > 0 && do { use integer; $cusp ^ 1 } < 0)
+       ? "ok 10\n" : "not ok 10\n");
+print (((1 << ($bits - 1)) == $cusp &&
+       do { use integer; 1 << ($bits - 1) } == -$cusp)
+       ? "ok 11\n" : "not ok 11\n");
+print ((($cusp >> 1) == ($cusp / 2) &&
+       do { use integer; $cusp >> 1 } == -($cusp / 2))
+       ? "ok 12\n" : "not ok 12\n");
+
+$Aaz = chr(ord("A") & ord("z"));
+$Aoz = chr(ord("A") | ord("z"));
+$Axz = chr(ord("A") ^ ord("z"));
 
 # short strings
-print (("AAAAA" & "zzzzz") eq '@@@@@' ? "ok 4\n" : "not ok 4\n");
-print (("AAAAA" | "zzzzz") eq '{{{{{' ? "ok 5\n" : "not ok 5\n");
-print (("AAAAA" ^ "zzzzz") eq ';;;;;' ? "ok 6\n" : "not ok 6\n");
+print (("AAAAA" & "zzzzz") eq ($Aaz x 5) ? "ok 13\n" : "not ok 13\n");
+print (("AAAAA" | "zzzzz") eq ($Aoz x 5) ? "ok 14\n" : "not ok 14\n");
+print (("AAAAA" ^ "zzzzz") eq ($Axz x 5) ? "ok 15\n" : "not ok 15\n");
 
 # long strings
 $foo = "A" x 150;
 $bar = "z" x 75;
-print (($foo & $bar) eq ('@'x75 ) ? "ok 7\n" : "not ok 7\n");
-print (($foo | $bar) eq ('{'x75 . 'A'x75) ? "ok 8\n" : "not ok 8\n");
-print (($foo ^ $bar) eq (';'x75 . 'A'x75) ? "ok 9\n" : "not ok 9\n");
+$zap = "A" x 75;
+# & truncates
+print (($foo & $bar) eq ($Aaz x 75 ) ? "ok 16\n" : "not ok 16\n");
+# | does not truncate
+print (($foo | $bar) eq ($Aoz x 75 . $zap) ? "ok 17\n" : "not ok 17\n");
+# ^ does not truncate
+print (($foo ^ $bar) eq ($Axz x 75 . $zap) ? "ok 18\n" : "not ok 18\n");
+