> char *p_tmp
> int substraction;
> for (i = 0, p_tmp = pnd_point; p_tmp-- != rx_array; i++) {}
> for (j = 0, p_tmp = dec_point; p_tmp-- != rx_array; j++) {}
> substraction = i - j;
>
>   
That seems horriblly inefficiant.

A much faster way is to typcast to an appropriate sized integer.

I thought pointer subtraction was allowed by the C standard and a quick 
google seems to agree with me. Of course PIC C compilers tend not to 
follow the standandards too closely in my experiance.
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