New file, moved from top-level directory.

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@2096 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 44 insertions, 0 deletions

diff --git a/tests/rnd_mode.c b/tests/rnd_mode.c
new file mode 100644
index 000000000..3497fe858
--- /dev/null
+++ b/tests/rnd_mode.c
@@ -0,0 +1,44 @@
+/* mpfr_set_machine_rnd_mode -- set the rounding mode for machine floats
+
+Copyright 1999, 2001, 2002 Free Software Foundation, Inc.
+
+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 <stdio.h>
+#include <stdlib.h>
+#include "gmp.h"
+#include "gmp-impl.h"  /* for MPFR_HAVE_FESETROUND when building within gmp */
+#include "mpfr.h"
+
+#ifdef MPFR_HAVE_FESETROUND
+#include <fenv.h>
+
+/* sets the machine rounding mode to the value rnd_mode */
+void
+mpfr_set_machine_rnd_mode (mp_rnd_t rnd_mode)
+{
+  switch (rnd_mode) {
+  case GMP_RNDN: fesetround(FE_TONEAREST); break;
+  case GMP_RNDZ: fesetround(FE_TOWARDZERO); break;
+  case GMP_RNDU: fesetround(FE_UPWARD); break;
+  case GMP_RNDD: fesetround(FE_DOWNWARD); break;
+  default: fprintf(stderr, "invalid rounding mode\n"); exit(1);
+  }
+}
+
+#endif