# The PDL module 2.062 ~ 2.089 exports its own srand() function, that
# silently clobbers Perl's srand function, and does not seed Perl's
# pseudo-random generator. https://perlmonks.org/?node_id=11159773
      
if ( $INC{'PDL/Primitive.pm'} && PDL::Primitive->can('srand') ) {
   # Call PDL's random() function if exported i.e. use PDL.
         
   my $caller = caller(); local $@;
   $caller = caller(1) if ( $caller =~ /^MCE/ );
   $caller = caller(2) if ( $caller =~ /^MCE/ ); 
   $caller = caller(3) if ( $caller =~ /^MCE/ );
      
   $self->{_seed} = eval "$caller->can('random')"
      ? int(PDL::Primitive::random() * 1e9)
      : int(CORE::rand() * 1e9);
}  
else {
   $self->{_seed} = int(CORE::rand() * 1e9);
}