Division by zero in rat/rats

[John W. Eaton]

On 11-Jun-2008, Atanas Atanasov wrote:

| Bug report for Octave 3.0.0 configured for x86_64-pc-linux-gnu
| 
| Description:
| -----------
| 
| The functions rat and rats should handle the special case of zero  
| input, which it seems currently they do not do. As a result the user  
| recieves a 'warning: division by zero' and wrong output.
| 
| Repeat-By:
| ---------
| 
| rat(0)
| [p,q] = rat(0)
| rats(0)
| 
| Fix:
| ---
| 
| It is possible to check whether the input is zero before calling  
| rat/rats but this is tedious. The check should be incorporated in the  
| beginning of rat.m.

Please try the following patch.

jwe


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