Imported gcc-4.4.3

[msp430-gcc.git] / mpfr / tests / tgeneric_ui.c

diff --git a/mpfr/tests/tgeneric_ui.c b/mpfr/tests/tgeneric_ui.c
new file mode 100644 (file)
index 0000000..f57b82b
--- /dev/null
+++ b/mpfr/tests/tgeneric_ui.c
@@ -0,0 +1,130 @@
+/* Generic test file for functions with one mpfr_t argument and an integer.
+
+Copyright 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+Contributed by the Arenaire and Cacao 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 2.1 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.LIB.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+MA 02110-1301, USA. */
+
+/* define INTEGER_TYPE to what we want */
+#ifndef INTEGER_TYPE
+# define INTEGER_TYPE mp_limb_t
+#endif
+#ifndef RAND_FUNCTION
+# define RAND_FUNCTION(x) mpfr_urandomb ((x), RANDS)
+#endif
+#ifndef INT_RAND_FUNCTION
+# define INT_RAND_FUNCTION() (INTEGER_TYPE) randlimb ()
+#endif
+
+static void
+test_generic_ui (mp_prec_t p0, mp_prec_t p1, unsigned int N)
+{
+  mp_prec_t prec, yprec;
+  mpfr_t x, y, z, t;
+  INTEGER_TYPE u;
+  mp_rnd_t rnd;
+  int inexact, compare, compare2;
+  unsigned int n;
+
+  mpfr_init (x);
+  mpfr_init (y);
+  mpfr_init (z);
+  mpfr_init (t);
+
+  /* generic test */
+  for (prec = p0; prec <= p1; prec++)
+    {
+      mpfr_set_prec (x, prec);
+      mpfr_set_prec (z, prec);
+      mpfr_set_prec (t, prec);
+      yprec = prec + 10;
+
+      for (n = 0; n <= N; n++)
+        {
+          if (n > 1 || prec < p1)
+            RAND_FUNCTION (x);
+          else
+            {
+              /* Special cases tested in precision p1 if n <= 1. */
+              mpfr_set_si (x, n == 0 ? 1 : -1, GMP_RNDN);
+              mpfr_set_exp (x, mpfr_get_emin ());
+            }
+          u = INT_RAND_FUNCTION ();
+          rnd = RND_RAND ();
+          mpfr_set_prec (y, yprec);
+          compare = TEST_FUNCTION (y, x, u, rnd);
+          if (mpfr_can_round (y, yprec, rnd, rnd, prec))
+            {
+              mpfr_set (t, y, rnd);
+              inexact = TEST_FUNCTION (z, x, u, rnd);
+              if (mpfr_cmp (t, z))
+                {
+                  printf ("results differ for x=");
+                  mpfr_out_str (stdout, 2, prec, x, GMP_RNDN);
+                  printf ("\nu=%lu", (unsigned long) u);
+                  printf (" prec=%lu rnd_mode=%s\n",
+                          (unsigned long ) prec, mpfr_print_rnd_mode (rnd));
+#ifdef TEST_FUNCTION_NAME
+                  printf ("Function: %s\n", TEST_FUNCTION_NAME);
+#endif
+                  printf ("got      ");
+                  mpfr_out_str (stdout, 2, prec, z, GMP_RNDN);
+                  puts ("");
+                  printf ("expected ");
+                  mpfr_out_str (stdout, 2, prec, t, GMP_RNDN);
+                  puts ("");
+                  printf ("approx  ");
+                  mpfr_print_binary (y);
+                  puts ("");
+                  exit (1);
+                }
+              compare2 = mpfr_cmp (t, y);
+              /* if rounding to nearest, cannot know the sign of t - f(x)
+                 because of composed rounding: y = o(f(x)) and t = o(y) */
+              if (compare * compare2 >= 0)
+                compare = compare + compare2;
+              else
+                compare = inexact; /* cannot determine sign(t-f(x)) */
+              if (((inexact == 0) && (compare != 0)) ||
+                  ((inexact > 0) && (compare <= 0)) ||
+                  ((inexact < 0) && (compare >= 0)))
+                {
+                  printf ("Wrong inexact flag for rnd=%s: expected %d, got %d"
+                          "\n", mpfr_print_rnd_mode (rnd), compare, inexact);
+                  printf ("x="); mpfr_print_binary (x); puts ("");
+                  printf ("u=%lu", (unsigned long) u);
+                  printf ("y="); mpfr_print_binary (y); puts ("");
+                  printf ("t="); mpfr_print_binary (t); puts ("");
+                  exit (1);
+                }
+            }
+        }
+    }
+
+  mpfr_clear (x);
+  mpfr_clear (y);
+  mpfr_clear (z);
+  mpfr_clear (t);
+}
+
+#undef RAND_FUNCTION
+#undef INTEGER_TYPE
+#undef TEST_FUNCTION
+#undef TEST_FUNCTION_NAME
+#undef test_generic_ui
+#undef INT_RAND_FUNCTION