# | Line 227 | Line 227 | double coef; | |
---|---|---|
227 | else | |
228 | backmat = foremat; | |
229 | /* check */ | |
230 | < | if (backmat != foremat) |
230 | > | if ((backmat==0) != (foremat==0)) |
231 | objerror(r->ro, USER, "mixing material with non-material"); | |
232 | /* sum perturbations */ | |
233 | for (i = 0; i < 3; i++) |
– | Removed lines |
+ | Added lines |
< | Changed lines |
> | Changed lines |