[Plplot-devel] FPE in plfill.c

[Hazen B. <hba...@ma...>]

Hello Alan, Arjen,

As I mentioned before, the FPE's in x25c, x30c and x33c are all coming 
from the notcrossed() function in plfill.c. Hopefully you can provide 
some insight as the authors. Basically the problem arises in a situation 
where the two lines do not cross, but are not parallel. In this 
situation this function still calculates the x,y intersection. However, 
depending on the position and orientation of the two lines this 
intersection can be way outside the range of values that can be 
represented using (4 byte) integers. Do you recall if functions that 
call this function expect to receive a valid intersection point in this 
case? Or is it ok to just return zero?

-Hazen