Restored isnan check [skip ci]

src/hnswutils.c

@@ -1,5 +1,6 @@
 #include "postgres.h"
 
+#include <float.h>
 #include <math.h>
 
 #include "access/generic_xlog.h"
@@ -573,7 +574,14 @@ HnswLoadElementImpl(BlockNumber blkno, OffsetNumber offno, float *distance, Datu
 		if (DatumGetPointer(*q) == NULL)
 			*distance = 0;
 		else
+		{
 			*distance = (float) DatumGetFloat8(FunctionCall2Coll(procinfo, collation, *q, PointerGetDatum(&etup->data)));
+
+			/* Needed for intvec cosine distance */
+			/* TODO Improve */
+			if (isnan(*distance))
+				*distance = FLT_MAX;
+		}
 	}
 
 	/* Load element */

src/intvec.c

@@ -110,7 +110,7 @@ intvec_in(PG_FUNCTION_ARGS)
 	int8		x[INTVEC_MAX_DIM];
 	int			dim = 0;
 	char	   *pt = lit;
-	IntVector	   *result;
+	IntVector  *result;
 
 	while (intvec_isspace(*pt))
 		pt++;