1 files changed, 29 insertions, 0 deletions
diff --git a/src/isnan.c b/src/isnan.c
new file mode 100644
index 000000000..f91e1edc1
--- /dev/null
+++ b/src/isnan.c
@@ -0,0 +1,29 @@
+/* mpfr_nan_p -- check for NaN
+
+Copyright 2000, 2001, 2004, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+Contributed by the Arenaire and Caramel projects, INRIA.
+
+This file is part of the GNU MPFR Library.
+
+The GNU MPFR Library is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+The GNU MPFR Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the GNU MPFR Library; see the file COPYING.LESSER.  If not, see
+http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
+51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#include "mpfr-impl.h"
+
+int
+(mpfr_nan_p) (mpfr_srcptr x)
+{
+  return MPFR_IS_NAN (x);
+}