Index: trunk/psastro/src/psastro.h
===================================================================
--- trunk/psastro/src/psastro.h	(revision 41500)
+++ trunk/psastro/src/psastro.h	(revision 41657)
@@ -184,4 +184,9 @@
 bool 		  psastroFPAtoChip (double *xChip, double *yChip, pmFPA *fpa, int nChip, double xFPA, double yFPA);
 
+pmChip           *psastroFindChipGPC (double *xChip, double *yChip, pmFPA *fpa, double xFPA, double yFPA);
+bool 		  psastroChipBoundsGPC (pmFPA *fpa);
+pmChip           *psastroCheckChip (double *xChip, double *yChip, pmFPA *fpa, int nChip, double xFPA, double yFPA);
+bool              psastroExtractFreeChipBoundsGPC(void);
+
 //bool              psastroMaskStats(pmConfig *config, psMetadata *stats);