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better test labels #21

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merged 1 commit into from May 27, 2012
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better test labels #21

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26 changes: 13 additions & 13 deletions S03-operators/overflow.t
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Expand Up @@ -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.
Expand All @@ -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
Expand Down