1 files changed, 29 insertions, 0 deletions
diff --git a/src/isregular.c b/src/isregular.c
new file mode 100644
index 0000000..51f47ab
--- /dev/null
+++ b/src/isregular.c
@@ -0,0 +1,29 @@
+/* mpfr_regular_p -- check for regular number (neither NaN, Inf or zero)
+
+Copyright 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
+Contributed by the AriC 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_regular_p) (mpfr_srcptr x)
+{
+  return MPFR_IS_SINGULAR(x) == 0;
+}