subdivision surface file in Blender

Good day, i’m looking for subdivision surface file in blender. I found “” where that modifier is calling for properties, but can’t find that file where actual subdivision process is going. Any advice? Thanx :slight_smile:

Might be source/blender/modifiers/intern/MOD_subsurf.c – or it’s a place to start at least.

And where can i find this path with this file - “source/blender/modifiers/intern”?