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freebsd/contrib/perl5/t/op/inc.t
2000-06-25 11:04:01 +00:00

98 lines
1.4 KiB
Perl
Executable File

#!./perl
print "1..12\n";
# Verify that addition/subtraction properly upgrade to doubles.
# These tests are only significant on machines with 32 bit longs,
# and two's complement negation, but shouldn't fail anywhere.
$a = 2147483647;
$c=$a++;
if ($a == 2147483648)
{print "ok 1\n"}
else
{print "not ok 1\n";}
$a = 2147483647;
$c=++$a;
if ($a == 2147483648)
{print "ok 2\n"}
else
{print "not ok 2\n";}
$a = 2147483647;
$a=$a+1;
if ($a == 2147483648)
{print "ok 3\n"}
else
{print "not ok 3\n";}
$a = -2147483648;
$c=$a--;
if ($a == -2147483649)
{print "ok 4\n"}
else
{print "not ok 4\n";}
$a = -2147483648;
$c=--$a;
if ($a == -2147483649)
{print "ok 5\n"}
else
{print "not ok 5\n";}
$a = -2147483648;
$a=$a-1;
if ($a == -2147483649)
{print "ok 6\n"}
else
{print "not ok 6\n";}
$a = 2147483648;
$a = -$a;
$c=$a--;
if ($a == -2147483649)
{print "ok 7\n"}
else
{print "not ok 7\n";}
$a = 2147483648;
$a = -$a;
$c=--$a;
if ($a == -2147483649)
{print "ok 8\n"}
else
{print "not ok 8\n";}
$a = 2147483648;
$a = -$a;
$a=$a-1;
if ($a == -2147483649)
{print "ok 9\n"}
else
{print "not ok 9\n";}
$a = 2147483648;
$b = -$a;
$c=$b--;
if ($b == -$a-1)
{print "ok 10\n"}
else
{print "not ok 10\n";}
$a = 2147483648;
$b = -$a;
$c=--$b;
if ($b == -$a-1)
{print "ok 11\n"}
else
{print "not ok 11\n";}
$a = 2147483648;
$b = -$a;
$b=$b-1;
if ($b == -(++$a))
{print "ok 12\n"}
else
{print "not ok 12\n";}