Imported gcc-4.4.3

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

diff --git a/mpfr/tests/tset_q.c b/mpfr/tests/tset_q.c
new file mode 100644 (file)
index 0000000..0666a21
--- /dev/null
+++ b/mpfr/tests/tset_q.c
@@ -0,0 +1,117 @@
+/* Test file for mpfr_set_q.
+
+Copyright 2000, 2001, 2002, 2003, 2004, 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. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "mpfr-test.h"
+
+static void
+check (long int n, long int d, mp_rnd_t rnd, const char *ys)
+{
+  mpq_t q;
+  mpfr_t x, t;
+  int inexact, compare;
+
+  mpfr_init2 (x, 53);
+  mpfr_init2 (t, mpfr_get_prec (x) + mp_bits_per_limb);
+  mpq_init (q);
+  mpq_set_si (q, n, d);
+  inexact = mpfr_set_q (x, q, rnd);
+
+  /* check values */
+  if (mpfr_cmp_str1(x, ys))
+    {
+      printf ("Error for q=%ld/%ld and rnd=%s\n", n, d,
+              mpfr_print_rnd_mode (rnd));
+      printf ("correct result is %s, mpfr_set_q gives ", ys);
+      mpfr_out_str(stdout, 10, 0, x, GMP_RNDN);
+      putchar('\n');
+      exit (1);
+    }
+
+  /* check inexact flag */
+  if (mpfr_mul_ui (t, x, (d < 0) ? (-d) : d, rnd))
+    {
+      printf ("t <- x * d should be exact\n");
+      exit (1);
+    }
+  compare = mpfr_cmp_si (t, n);
+  if (((inexact == 0) && (compare != 0)) ||
+      ((inexact < 0) && (compare >= 0)) ||
+      ((inexact > 0) && (compare <= 0)))
+    {
+      printf ("wrong inexact flag: expected %d, got %d\n", compare,
+              inexact);
+      exit (1);
+    }
+
+  mpfr_clear (x);
+  mpfr_clear (t);
+  mpq_clear (q);
+}
+
+static void check0(void)
+{
+  mpq_t y;
+  mpfr_t x;
+  int inexact;
+  int r;
+
+  /* Check for +0 */
+  mpfr_init (x);
+  mpq_init (y);
+  mpq_set_si (y, 0, 1);
+  for (r = 0; r < GMP_RND_MAX; r++)
+    {
+      inexact = mpfr_set_q(x, y, (mp_rnd_t) r);
+      if (!MPFR_IS_ZERO(x) || !MPFR_IS_POS(x) || inexact)
+        {
+          printf("mpfr_set_q(x,0) failed for %s\n",
+                 mpfr_print_rnd_mode ((mp_rnd_t) r));
+          exit(1);
+        }
+    }
+  mpfr_clear (x);
+  mpq_clear (y);
+}
+
+int
+main (void)
+{
+  tests_start_mpfr ();
+
+  check(-1647229822, 40619231, GMP_RNDZ, "-4.055295438754120596e1");
+  check(-148939696, 1673285490, GMP_RNDZ, "-8.9010331404953485501e-2");
+  check(-441322590, 273662545, GMP_RNDZ, "-1.6126525096812205362");
+  check(-1631156895, 1677687197, GMP_RNDU, "-9.722652100563177191e-1");
+  check(2141332571, 3117601, GMP_RNDZ, "6.8685267004982347316e2");
+  check(75504803, 400207282, GMP_RNDU, "1.8866424074712365155e-1");
+  check(643562308, 23100894, GMP_RNDD, "2.7858762002890447462e1");
+  check(632549085, 1831935802, GMP_RNDN, "3.4528998467600230393e-1");
+  check (1, 1, GMP_RNDN, "1.0");
+
+  check0();
+
+  tests_end_mpfr ();
+  return 0;
+}