GDB 7.6.50

gdb/gnulib/import/isnanl-nolibm.h

Index: gdb/gnulib/import/isnanl-nolibm.h
diff --git a/gdb/gnulib/import/strnlen1.h b/gdb/gnulib/import/isnanl-nolibm.h
similarity index 53%
copy from gdb/gnulib/import/strnlen1.h
copy to gdb/gnulib/import/isnanl-nolibm.h
index 4c4f0c0813c1a2e8ca0854f5fa07a5b45527d642..58d963dbc39699a1f363031534f8c6e352990b16 100644
--- a/gdb/gnulib/import/strnlen1.h
+++ b/gdb/gnulib/import/isnanl-nolibm.h
@@ -1,5 +1,5 @@
-/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
-   Copyright (C) 2005, 2009-2012 Free Software Foundation, Inc.
+/* Test for NaN that does not need libm.
+   Copyright (C) 2007-2012 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -14,27 +14,20 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#ifndef _STRNLEN1_H
-#define _STRNLEN1_H
-
-#include <stddef.h>
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-/* Find the length of STRING + 1, but scan at most MAXLEN bytes.
-   If no '\0' terminator is found in that many characters, return MAXLEN.  */
-/* This is the same as strnlen (string, maxlen - 1) + 1.  */
-extern size_t strnlen1 (const char *string, size_t maxlen)
-  _GL_ATTRIBUTE_PURE;
-
-
-#ifdef __cplusplus
-}
+#if HAVE_ISNANL_IN_LIBC
+/* Get declaration of isnan macro or (older) isnanl function.  */
+# include <math.h>
+# if __GNUC__ >= 4
+   /* GCC 4.0 and newer provides three built-ins for isnan.  */
+#  undef isnanl
+#  define isnanl(x) __builtin_isnanl ((long double)(x))
+# elif defined isnan
+#  undef isnanl
+#  define isnanl(x) isnan ((long double)(x))
+# endif
+#else
+/* Test whether X is a NaN.  */
+# undef isnanl
+# define isnanl rpl_isnanl
+extern int isnanl (long double x);
 #endif
-
-
-#endif /* _STRNLEN1_H */