New functions mpfr_get_exp and mpfr_set_exp.

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@1965 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 39 insertions, 0 deletions

diff --git a/set_exp.c b/set_exp.c
new file mode 100644
index 000000000..5f9e24b1d
--- /dev/null
+++ b/set_exp.c
@@ -0,0 +1,39 @@
+/* mpfr_set_exp - set the exponent of a floating-point number
+
+Copyright 2002 Free Software Foundation.
+
+This file is part of the MPFR Library.
+
+The 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 2.1 of the License, or (at your
+option) any later version.
+
+The 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 MPFR Library; see the file COPYING.LIB.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+MA 02111-1307, USA. */
+
+#include "gmp.h"
+#include "gmp-impl.h"
+#include "mpfr.h"
+#include "mpfr-impl.h"
+
+int
+mpfr_set_exp (mpfr_ptr x, mp_exp_t exponent)
+{
+  if (exponent >= __mpfr_emin && exponent <= __mpfr_emax)
+    {
+      MPFR_EXP(x) = exponent;
+      return 0;
+    }
+  else
+    {
+      return 1;
+    }
+}