Add test file for mpfr_subnormalize

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/trunk@3692 280ebfd0-de03-0410-8827-d642c229c3f4

1 files changed, 85 insertions, 0 deletions

diff --git a/tests/tsubnormal.c b/tests/tsubnormal.c
new file mode 100644
index 000000000..8edf60c31
--- /dev/null
+++ b/tests/tsubnormal.c
@@ -0,0 +1,85 @@
+/* Test file for mpfr_subnormalize.
+
+Copyright 2005 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., 51 Franklin Place, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+static const struct {
+  const char *in;
+  int i;
+  mp_rnd_t rnd;
+  const char *out;
+} tab[] ={
+  {"1E1",  0, GMP_RNDN, "1E1"},
+  {"1E1", -1, GMP_RNDZ, "1E1"},
+  {"1E1", -1, GMP_RNDD, "1E1"},
+  {"1E1",  1, GMP_RNDU, "1E1"},
+  {"0.10000E-10", 0, GMP_RNDN, "0.1E-10"},
+  {"0.10001E-10", 0, GMP_RNDN, "0.1E-10"},
+  {"0.11001E-10", 0, GMP_RNDN, "0.1E-9"},
+  {"0.11001E-10", 0, GMP_RNDZ, "0.1E-10"},
+  {"0.11001E-10", 0, GMP_RNDU, "0.1E-9"},
+  {"0.11000E-10", 0, GMP_RNDN, "0.1E-9"},
+  {"0.11111E-8", 0, GMP_RNDN, "0.10E-7"},
+  {"0.10111E-8", 0, GMP_RNDN, "0.11E-8"},
+  {"0.11110E-8", -1, GMP_RNDN, "0.10E-7"},
+  {"0.10110E-8", 1, GMP_RNDN, "0.101E-8"}
+};
+
+static void
+check1 (void)
+{
+  mpfr_t x;
+  int i, j;
+
+  mpfr_set_default_prec (9);
+  mpfr_set_emin (-10);
+  mpfr_set_emax (10);
+
+  mpfr_init (x);
+  for (i = 0; i < (sizeof (tab) / sizeof (tab[0])); i++)
+    {
+      mpfr_set_str (x, tab[i].in, 2, GMP_RNDN);
+      j = mpfr_subnormalize (x, tab[i].i, tab[i].rnd);
+      if (mpfr_cmp_str (x, tab[i].out, 2, GMP_RNDN) != 0)
+        {
+          printf ("Error for i=%d\nFor:%s\nExpected:%s\nGot:",
+                  i, tab[i].in, tab[i].out);
+          mpfr_dump (x);
+          exit (1);
+        }
+    }
+  mpfr_clear (x);
+}
+
+
+int
+main (int argc, char *argv[])
+{
+  tests_start_mpfr ();
+
+  check1 ();
+
+  tests_end_mpfr ();
+  return 0;
+}