Sample code:
    $number = 116503231466;
  
    print $number / 1000;
    print $number % 1000;

The  first print statement will print:  1150321.466
The second print statement will print: -648
instead of the expected 466.

Looking at the code in operators.c, div_function calls
convert_string_to_number() which promotes $number to
double because strtol() returns ERANGE.  Then div_function
then performs a floating point divide.

mod_function, however calls convert_to_long, which
calls convert_to_long_base(), which ignores the ERANGE
error, returning LONG_MIN on Linux.

I think mod_function() should be using convert_string_to_number(), and case out the code depending
on the data type of the numbers.  

I don't know what else uses convert_to_long() and/or convert_to_long_base(), so I don't know if these functions need to be returning a range error, though silently returning LONG_MIN seems dangerous.

I'm happy to take a shot at rewriting mod_function() if that would be useful.
		Thanks,
			-Cam