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Add tests for RT#125466 | [MATH] bitwise shift is inconsistent on int #344

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merged 3 commits into from
Oct 8, 2017
Merged

Add tests for RT#125466 | [MATH] bitwise shift is inconsistent on int #344

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e1dbe67
Add tests for RT#125466
Oct 8, 2017
eeef884
Bump `plan`
Oct 8, 2017
ccff08d
Add missing types and "todo fudge" unclear cases
Oct 8, 2017
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27 changes: 26 additions & 1 deletion S03-operators/bit.t
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ use Test;

# Mostly copied from Perl 5.8.4 s t/op/bop.t

plan 40;
plan 54;

# test the bit operators '&', '|', '^', '+<', and '+>'

Expand Down Expand Up @@ -135,6 +135,31 @@ plan 40;
#if ("ok \xFF\x{FF}\n" ~& "ok 41\n" eq "ok 41\n") { say "ok 19" } else { say "not ok 19" }
#if ("ok \x{FF}\xFF\n" ~& "ok 42\n" eq "ok 42\n") { say "ok 20" } else { say "not ok 20" }

# RT#125466 - bitwise shift consistency on int
{
my int $int_min = -9223372036854775808; # int.Range.min for 64bit
my int $int_max = 9223372036854775807; # int.Range.max for 64bit

is($int_min +> 16, -140737488355328);
is($int_min +> 32, -2147483648);
is($int_min +> 63, -1);
#?rakudo todo "Clarification needed RT#125466"
is($int_min +> 64, -1);
is($int_min +> -32, -39614081257132168796771975168);
is($int_min +> -64, -170141183460469231731687303715884105728);

is($int_max +> 16, 140737488355327);
is($int_max +> 32, 2147483647);
is($int_max +> 63, 0);
#?rakudo todo "Clarification needed RT#125466"
is($int_max +> 64, 0);
is($int_max +> -2, 36893488147419103228);
is($int_max +> -32, 39614081257132168792477007872);
#?rakudo todo "Clarification needed RT#125466"
is($int_max +< 2, 36893488147419103228);
is($int_max +< -2, 2305843009213693951);
}

# RT#126942
# RT#131278
subtest '+> bit shift' => {
Expand Down