Document magic number in $?BITS

rakudo · Aug 1, 2018 · 2999d4f · 2999d4f
1 parent 64ab717
commit 2999d4f
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/Perl6/Actions.nqp b/src/Perl6/Actions.nqp
@@ -7,6 +7,7 @@ use QAST;
 
 my $wantwant := Mu;
 
+# 2147483648 == 2**31. By adding 1 to it with add_i op, on 32-bit boxes it will overflow
 my int $?BITS := nqp::isgt_i(nqp::add_i(2147483648, 1), 0) ?? 64 !! 32;
 
 sub block_closure($code) {