Imported gcc-4.4.3

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

diff --git a/mpfr/tests/tmodf.c b/mpfr/tests/tmodf.c
new file mode 100644 (file)
index 0000000..79aa7b1
--- /dev/null
+++ b/mpfr/tests/tmodf.c
@@ -0,0 +1,137 @@
+/* Test file for mpfr_modf.
+
+Copyright 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"
+
+#if MPFR_VERSION >= MPFR_VERSION_NUM(2,4,0)
+
+static void
+check (const char *xis, const char *xfs, const char *xs,
+       mp_prec_t xip, mp_prec_t xfp, mp_prec_t xp,
+       int expected_return, mp_rnd_t rnd_mode)
+{
+  int inexact;
+  mpfr_t xi, xf, x;
+
+  mpfr_init2 (xi, xip);
+  mpfr_init2 (xf, xfp);
+  mpfr_init2 (x, xp);
+  mpfr_set_str1 (x, xs);
+  inexact = mpfr_modf (xi, xf, x, rnd_mode);
+  if (mpfr_cmp_str1 (xi, xis))
+    {
+      printf ("mpfr_mof failed for x=%s, rnd=%s\n",
+              xs, mpfr_print_rnd_mode(rnd_mode));
+      printf ("got integer value: ");
+      mpfr_out_str (stdout, 10, 0, xi, GMP_RNDN);
+      printf ("\nexpected %s\n", xis);
+      exit (1);
+    }
+  if (mpfr_cmp_str1 (xf, xfs))
+    {
+      printf ("mpfr_mof failed for x=%s, rnd=%s\n",
+              xs, mpfr_print_rnd_mode(rnd_mode));
+      printf ("got fractional value: ");
+      mpfr_out_str (stdout, 10, 0, xf, GMP_RNDN);
+      printf ("\nexpected %s\n", xfs);
+      exit (1);
+    }
+  if (inexact != expected_return)
+    {
+      printf ("mpfr_mof failed for x=%s, rnd=%s\n",
+              xs, mpfr_print_rnd_mode(rnd_mode));
+      printf ("got return value: %d, expected %d\n", inexact, expected_return);
+      exit (1);
+    }
+  mpfr_clears (xi, xf, x, (mpfr_ptr) 0);
+}
+
+static void
+check_nans (void)
+{
+  mpfr_t  x, xi, xf;
+
+  mpfr_init2 (x, 123);
+  mpfr_init2 (xi, 123);
+  mpfr_init2 (xf, 123);
+
+  /* nan */
+  mpfr_set_nan (x);
+  mpfr_modf (xi, xf, x, GMP_RNDN);
+  MPFR_ASSERTN (mpfr_nan_p (xi));
+  MPFR_ASSERTN (mpfr_nan_p (xf));
+
+  /* +inf */
+  mpfr_set_inf (x, 1);
+  mpfr_modf (xi, xf, x, GMP_RNDN);
+  MPFR_ASSERTN (mpfr_inf_p (xi));
+  MPFR_ASSERTN (mpfr_sgn (xi) > 0);
+  MPFR_ASSERTN (mpfr_zero_p (xf));
+
+  /* -inf */
+  mpfr_set_inf (x, -1);
+  mpfr_modf (xi ,xf, x, GMP_RNDN);
+  MPFR_ASSERTN (mpfr_inf_p (xi));
+  MPFR_ASSERTN (mpfr_sgn (xi) < 0);
+  MPFR_ASSERTN (mpfr_zero_p (xf));
+
+  mpfr_clear (x);
+  mpfr_clear (xi);
+  mpfr_clear (xf);
+}
+
+int
+main (int argc, char *argv[])
+{
+  tests_start_mpfr ();
+
+  check_nans ();
+
+  check ("61680","3.52935791015625e-1", "61680.352935791015625",
+         53, 53, 53, 0, GMP_RNDZ);
+  check ("-53968","-3.529052734375e-1", "-53970.352935791015625",
+         13, 13, 53, 2, GMP_RNDZ);
+  check ("61632","3.525390625e-1",      "61648.352935791015625",
+         10, 10, 53, -2, GMP_RNDZ);
+  check ("61680", "0", "61680",  53, 53, 53, 0, GMP_RNDZ);
+  check ("-53968","0", "-53970", 13, 13, 53, 1, GMP_RNDZ);
+  check ("-43392","0", "-43399", 13, 13, 53, 1, GMP_RNDU);
+  check ("-52720","0", "-52719", 13, 13, 53, -1, GMP_RNDD);
+  check ("61632", "0", "61648",  10, 10, 53, -1, GMP_RNDZ);
+
+  tests_end_mpfr ();
+  return 0;
+}
+
+#else
+
+int
+main (void)
+{
+  printf ("Warning! Test disabled for this MPFR version.\n");
+  return 0;
+}
+
+#endif