Initial progress on subsumption DFA. Why is this branch called subsumption-tree?

ncnf.h

@@ -0,0 +1,22 @@
+#pragma once
+#include "types.h"
+
+typedef struct {
+  u32 varcnt;
+  u32 clausecnt;
+  u32* lvars;
+  u32* clens;
+  u32* cptrs;
+  u32 totcnt;
+  u32* varbak;
+  u8* parbak;
+} ncnf;
+
+ncnf* nreadDIMACS(char* path);
+
+void nprintcnf(ncnf* c);
+void nprintcnf2(ncnf* c);
+
+void nsortlastnum(ncnf* c);
+
+void nfreecnf(ncnf* c);