Imported gcc-4.4.3

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

diff --git a/mpfr/tests/tset.c b/mpfr/tests/tset.c
new file mode 100644 (file)
index 0000000..4b02ea0
--- /dev/null
+++ b/mpfr/tests/tset.c
@@ -0,0 +1,151 @@
+/* Test file for mpfr_set.
+
+Copyright 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"
+
+/* Maybe better create its own test file ? */
+static void
+check_neg_special (void)
+{
+  mpfr_t x;
+  mpfr_init (x);
+  MPFR_SET_NAN (x);
+  mpfr_clear_nanflag ();
+  mpfr_neg (x, x, GMP_RNDN);
+  if (!mpfr_nanflag_p () )
+    {
+      printf("ERROR: neg (NaN) doesn't set Nan flag.\n");
+      exit (1);
+    }
+  mpfr_clear (x);
+}
+
+#define TEST_FUNCTION mpfr_set
+#include "tgeneric.c"
+
+int
+main (void)
+{
+  mp_prec_t p, q;
+  mpfr_t x, y, z, u;
+  int rnd;
+  int inexact, cmp;
+  mp_exp_t emax;
+
+  tests_start_mpfr ();
+
+  /* check prototypes of mpfr_init_set_* */
+  inexact = mpfr_init_set_si (x, -1, GMP_RNDN);
+  inexact = mpfr_init_set (y, x, GMP_RNDN);
+  inexact = mpfr_init_set_ui (z, 1, GMP_RNDN);
+  inexact = mpfr_init_set_d (u, 1.0, GMP_RNDN);
+
+  mpfr_set_nan (x);
+  (mpfr_set) (y, x, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_nan_p (y));
+
+  mpfr_set_inf (x, 1);
+  mpfr_set (y, x, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_inf_p (y) && mpfr_sgn (y) > 0);
+
+  mpfr_set_inf (x, -1);
+  mpfr_set (y, x, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_inf_p (y) && mpfr_sgn (y) < 0);
+
+  mpfr_set_ui (x, 0, GMP_RNDN);
+  mpfr_set (y, x, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_POS(y));
+
+  mpfr_set_ui (x, 0, GMP_RNDN);
+  mpfr_neg (x, x, GMP_RNDN);
+  mpfr_set (y, x, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_cmp_ui (y, 0) == 0 && MPFR_IS_NEG(y));
+
+  emax = mpfr_get_emax ();
+  set_emax (0);
+  mpfr_set_prec (x, 3);
+  mpfr_set_str_binary (x, "0.111");
+  mpfr_set_prec (y, 2);
+  mpfr_set (y, x, GMP_RNDU);
+  if (!(MPFR_IS_INF (y) && MPFR_SIGN (y) > 0))
+    {
+      printf ("Error for y=x=0.111 with px=3, py=2 and emax=0\nx=");
+      mpfr_dump (x);
+      printf ("y=");
+      mpfr_dump (y);
+      exit (1);
+    }
+
+  MPFR_ASSERTN (MPFR_IS_INF (y) && MPFR_SIGN (y) > 0);
+  set_emax (emax);
+
+  mpfr_set_prec (y, 11);
+  mpfr_set_str_binary (y, "0.11111111100E-8");
+  mpfr_set_prec (x, 2);
+  mpfr_set (x, y, GMP_RNDN);
+  mpfr_set_str_binary (y, "1.0E-8");
+  if (mpfr_cmp (x, y))
+    {
+      printf ("Error for y=0.11111111100E-8, prec=2, rnd=GMP_RNDN\n");
+      exit (1);
+    }
+
+  for (p=2; p<500; p++)
+    {
+      mpfr_set_prec (x, p);
+      mpfr_urandomb (x, RANDS);
+      if (randlimb () % 2)
+        mpfr_neg (x, x, GMP_RNDN);
+      for (q=2; q<2*p; q++)
+        {
+          mpfr_set_prec (y, q);
+          for (rnd = 0; rnd < GMP_RND_MAX; rnd++)
+            {
+              inexact = mpfr_set (y, x, (mp_rnd_t) rnd);
+              cmp = mpfr_cmp (y, x);
+              if (((inexact == 0) && (cmp != 0)) ||
+                  ((inexact > 0) && (cmp <= 0)) ||
+                  ((inexact < 0) && (cmp >= 0)))
+                {
+                  printf ("Wrong inexact flag in mpfr_set: expected %d,"
+                          " got %d\n", cmp, inexact);
+                  exit (1);
+                }
+            }
+        }
+    }
+
+  mpfr_clear (x);
+  mpfr_clear (y);
+  mpfr_clear (z);
+  mpfr_clear (u);
+
+  check_neg_special ();
+
+  test_generic (2, 1000, 10);
+
+  tests_end_mpfr ();
+  return 0;
+}