Re: [ShopSuite-dev] undef+0=undef

[Davi Leal]

* Before updating the rational.c plug-in:

shop=> select rational('1/2') + rational('1/0');
 0/0  <-- OK
shop=> select rational('0/2') + rational('1/3');
 1/3  <-- OK
shop=> select rational('0/2') + rational('0/3');
 0/1  <-- OK
shop=> select rational('0/2') + rational('0/0');
 0/1  <-------- !!!!   Must be 0/0?
shop=> select rational('0/2') + rational('1/0');
 0/0  <-- OK


* After updating the rational.c plug-in:

shop=> select rational('1/2') + rational('1/0');
 0/0  <-- OK
shop=> select rational('0/2') + rational('1/3');
 2/6  <-- Accurate, but worst behaviour
shop=> select rational('0/2') + rational('0/3');
 0/6  <-- Accurate, but worst behaviour
shop=> select rational('0/2') + rational('0/0');
 0/0  <-- OK, fixed
shop=> select rational('0/2') + rational('1/0');
 0/0  <-- OK


I will wait up to this is fixed to commit the new changes.