1 files changed, 37 insertions, 0 deletions
diff --git a/unix/os/zraloc.c b/unix/os/zraloc.c
new file mode 100644
index 00000000..6021a359
--- /dev/null
+++ b/unix/os/zraloc.c
@@ -0,0 +1,37 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+ */
+
+#include <stdio.h>
+#define	import_kernel
+#define	import_knames
+#define import_spp
+#include <iraf.h>
+
+/* ZRALOC -- Reallocate space on the heap (change the size of the area).
+ */
+int
+ZRALOC (
+  XINT	*buf,			/* receives address of buffer 		*/
+  XINT	*nbytes,		/* buffer size, machine bytes 		*/
+  XINT	*status 		/* status return: XOK or XERR		*/
+)
+{
+	register char *bufptr;
+	char  *ptr = (void *) NULL;
+	int   zstat;
+
+        ptr = LOC_TO_ADDR(*buf,char);
+	bufptr = realloc (ptr, (size_t)*nbytes);
+
+	if (bufptr != NULL) {
+            *buf = ADDR_TO_LOC(bufptr);
+            if (*buf > 0)
+                *status = XOK;
+            else
+                *status = XERR;
+	} else
+	    *status = XERR;
+
+	zstat =  *status;
+	return (zstat);
+}