1 files changed, 114 insertions, 0 deletions
diff --git a/tests/tdim.c b/tests/tdim.c
new file mode 100644
index 0000000..d32add7
--- /dev/null
+++ b/tests/tdim.c
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+/* Test file for mpfr_dim.
+
+Copyright 2004, 2005, 2006, 2007, 2008, 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 <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+#define TEST_FUNCTION mpfr_dim
+#define TWO_ARGS
+#define TEST_RANDOM_EMIN -20
+#define TEST_RANDOM_EMAX 20
+#define TGENERIC_NOWARNING 1
+#include "tgeneric.c"
+
+int
+main (void)
+{
+  mpfr_t x, y, z;
+
+  tests_start_mpfr ();
+
+  mpfr_init (x);
+  mpfr_init (y);
+  mpfr_init (z);
+
+  /* case x=NaN */
+  mpfr_set_nan (x);
+  mpfr_set_ui (y, 0, MPFR_RNDN);
+  mpfr_dim (z, x, y, MPFR_RNDN);
+  if (!mpfr_nan_p (z))
+    {
+      printf ("Error in mpfr_dim (NaN, 0)\n");
+      exit (1);
+    }
+
+  /* case x=+Inf */
+  mpfr_set_inf (x, 1);
+  mpfr_set_ui (y, 0, MPFR_RNDN);
+  mpfr_dim (z, x, y, MPFR_RNDN);
+  if (!mpfr_inf_p (z) || mpfr_sgn (z) < 0)
+    {
+      printf ("Error in mpfr_dim (+Inf, 0)\n");
+      exit (1);
+    }
+
+  /* case x=-Inf */
+  mpfr_set_inf (x, -1);
+  mpfr_set_ui (y, 0, MPFR_RNDN);
+  mpfr_dim (z, x, y, MPFR_RNDN);
+  if (mpfr_cmp_ui (z, 0) || mpfr_sgn (z) < 0)
+    {
+      printf ("Error in mpfr_dim (-Inf, 0)\n");
+      exit (1);
+    }
+
+  /* case x=y=+Inf */
+  mpfr_set_inf (x, 1);
+  mpfr_set_inf (y, 1);
+  mpfr_dim (z, x, y, MPFR_RNDN);
+  if (mpfr_cmp_ui (z, 0) || mpfr_sgn (z) < 0)
+    {
+      printf ("Error in mpfr_dim (+Inf, +Inf)\n");
+      exit (1);
+    }
+
+  /* case x > y */
+  mpfr_set_ui (x, 2, MPFR_RNDN);
+  mpfr_set_ui (y, 1, MPFR_RNDN);
+  mpfr_dim (z, x, y, MPFR_RNDN);
+  if (mpfr_cmp_ui (z, 1))
+    {
+      printf ("Error in mpfr_dim (2, 1)\n");
+      exit (1);
+    }
+
+  /* case x < y */
+  mpfr_set_ui (x, 1, MPFR_RNDN);
+  mpfr_set_ui (y, 2, MPFR_RNDN);
+  mpfr_dim (z, x, y, MPFR_RNDN);
+  if (mpfr_cmp_ui (z, 0))
+    {
+      printf ("Error in mpfr_dim (1, 2)\n");
+      exit (1);
+    }
+
+  mpfr_clear (x);
+  mpfr_clear (y);
+  mpfr_clear (z);
+
+  test_generic (2, 220, 42);
+
+  tests_end_mpfr ();
+  return 0;
+}