1 files changed, 22 insertions, 0 deletions
diff --git a/src/backend/port/qnx/isnan.c b/src/backend/port/qnx/isnan.c
new file mode 100644
index 00000000000..eb717d30483
--- /dev/null
+++ b/src/backend/port/qnx/isnan.c
@@ -0,0 +1,22 @@
+/*-------------------------------------------------------------------------
+ *
+ * isnan.c
+ *	  isnan() implementation
+ *
+ * Copyright (c) 1999, repas AEG Automation GmbH
+ *
+ *
+ * IDENTIFICATION
+ *	  $Header: /cvsroot/pgsql/src/backend/port/qnx/Attic/isnan.c,v 1.1 1999/12/16 01:25:06 momjian Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "os.h"
+
+unsigned char __nan[8] = __nan_bytes;
+
+int isnan(double dsrc)
+{
+  return !memcmp( &dsrc, &NAN, sizeof( double ) );
+}