1 files changed, 31 insertions, 0 deletions
diff --git a/noao/digiphot/photcal/mctable/mctshrink.x b/noao/digiphot/photcal/mctable/mctshrink.x
new file mode 100644
index 00000000..6a88f230
--- /dev/null
+++ b/noao/digiphot/photcal/mctable/mctshrink.x
@@ -0,0 +1,31 @@
+include	"../lib/mctable.h"
+
+
+# MCT_SHRINK - Free unused table memory
+
+procedure mct_shrink (table)
+
+pointer	table			# table descriptor
+
+int	lsize, psize
+
+begin
+	# Check pointer and magic number.
+	if (table == NULL)
+	    call error (0, "mct_shrink: Null table pointer")
+	if (MCT_MAGIC (table) != MAGIC)
+	    call error (0, "mct_shrink: Bad magic number")
+
+	# Compute aproximate logical size, and exact physical
+	# sizes. This might produce a little bit of space wasted.
+
+	lsize = MCT_NPROWS (table) * MCT_MAXCOL (table)
+	psize = MCT_MAXROW (table) * MCT_MAXCOL (table)
+
+	# Reallocate table sapace and update physical size.
+	if (lsize != psize) {
+	    call realloc (MCT_DATA (table), lsize, MCT_TYPE (table))
+	    MCT_MAXROW  (table) = MCT_NPROWS (table)
+	    MCT_INCROWS (table) = GROWFACTOR (MCT_MAXROW (table))
+	}
+end