A Pure Perl work-around:
#!/use/bin/perl
use strict;
use warnings;
sub udiv64 {
my ($a, $b) = @_;
return 0 if $b > $a;
my $c = $a >> 1;
my $d = do { use integer; $c / $b };
my $e = $a - (do { use integer; $d * $b } << 1);
($d << 1) + do { use integer; $e / $b }
}
use Devel::Peek;
Dump udiv64(10_000_000_000_000_000_011, 10);
Dump udiv64(10_000_000_000_000_000_011, 1)
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