--- a/include/floatformat.h	Sun Aug 21 07:07:55 2011 +0900
+++ b/include/floatformat.h	Fri Oct 27 22:46:09 2017 +0900
@@ -1,6 +1,5 @@
 /* IEEE floating point support declarations, for GDB, the GNU Debugger.
-   Copyright 1991, 1994, 1995, 1997, 2000, 2003, 2005, 2010
-   Free Software Foundation, Inc.
+   Copyright (C) 1991-2017 Free Software Foundation, Inc.
 
 This file is part of GDB.
 
@@ -23,6 +22,10 @@
 
 #include "ansidecl.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /* A floatformat consists of a sign bit, an exponent and a mantissa.  Once the
    bytes are concatenated according to the byteorder flag, then each of those
    fields is contiguous.  We number the bits with 0 being the most significant
@@ -128,7 +131,8 @@
 extern const struct floatformat floatformat_ia64_quad_big;
 extern const struct floatformat floatformat_ia64_quad_little;
 /* IBM long double (double+double).  */
-extern const struct floatformat floatformat_ibm_long_double;
+extern const struct floatformat floatformat_ibm_long_double_big;
+extern const struct floatformat floatformat_ibm_long_double_little;
 
 /* Convert from FMT to a double.
    FROM is the address of the extended float.
@@ -148,4 +152,8 @@
 extern int
 floatformat_is_valid (const struct floatformat *fmt, const void *from);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif	/* defined (FLOATFORMAT_H) */