Imported gcc-4.4.3

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

diff --git a/mpfr/tests/ttanh.c b/mpfr/tests/ttanh.c
new file mode 100644 (file)
index 0000000..42edf29
--- /dev/null
+++ b/mpfr/tests/ttanh.c
@@ -0,0 +1,138 @@
+/* Test file for mpfr_tanh.
+
+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"
+
+#define TEST_FUNCTION mpfr_tanh
+#define TEST_RANDOM_EMIN -36
+#define TEST_RANDOM_EMAX 36
+#include "tgeneric.c"
+
+static void
+special (void)
+{
+  mpfr_t x;
+
+  mpfr_init (x);
+
+  mpfr_set_nan (x);
+  mpfr_tanh (x, x, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_nan_p (x));
+
+  mpfr_set_inf (x, 1);
+  mpfr_tanh (x, x, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_cmp_ui (x, 1) == 0);
+
+  mpfr_set_inf (x, -1);
+  mpfr_tanh (x, x, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_cmp_si (x, -1) == 0);
+
+  mpfr_set_prec (x, 10);
+  mpfr_set_str_binary (x, "-0.1001011001");
+  mpfr_tanh (x, x, GMP_RNDN);
+  MPFR_ASSERTN(mpfr_cmp_si_2exp (x, -135, -8) == 0);
+
+  mpfr_clear (x);
+}
+
+static void
+special_overflow (void)
+{
+  mpfr_t x, y;
+  int i;
+  mp_exp_t emin, emax;
+
+  emin = mpfr_get_emin ();
+  emax = mpfr_get_emax ();
+
+  mpfr_clear_overflow ();
+  set_emin (-125);
+  set_emax (128);
+  mpfr_init2 (x, 24);
+  mpfr_init2 (y, 24);
+
+  mpfr_set_str_binary (x, "0.101100100000000000110100E7");
+  i = mpfr_tanh (y, x, GMP_RNDN);
+  if (mpfr_cmp_ui (y, 1) || i != 1)
+    {
+      printf("Overflow error (1). i=%d\ny=", i);
+      mpfr_dump (y);
+      exit (1);
+    }
+  MPFR_ASSERTN (!mpfr_overflow_p ());
+
+  i = mpfr_tanh (y, x, GMP_RNDZ);
+  if (mpfr_cmp_str (y, "0.111111111111111111111111E0", 2, GMP_RNDN)
+      || i != -1)
+    {
+      printf("Overflow error (2).i=%d\ny=", i);
+      mpfr_dump (y);
+      exit (1);
+    }
+  MPFR_ASSERTN (!mpfr_overflow_p ());
+
+  set_emin (emin);
+  set_emax (emax);
+
+  mpfr_set_str_binary (x, "0.1E1000000000");
+  i = mpfr_tanh (y, x, GMP_RNDN);
+  if (mpfr_cmp_ui (y, 1) || i != 1)
+    {
+      printf("Overflow error (3). i=%d\ny=", i);
+      mpfr_dump (y);
+      exit (1);
+    }
+  MPFR_ASSERTN (!mpfr_overflow_p ());
+  mpfr_set_str_binary (x, "-0.1E1000000000");
+  i = mpfr_tanh (y, x, GMP_RNDU);
+  if (mpfr_cmp_str (y, "-0.111111111111111111111111E0", 2, GMP_RNDN)
+      || i != 1)
+    {
+      printf("Overflow error (4). i=%d\ny=", i);
+      mpfr_dump (y);
+      exit (1);
+    }
+
+  mpfr_clear (y);
+  mpfr_clear (x);
+}
+
+int
+main (int argc, char *argv[])
+{
+  tests_start_mpfr ();
+
+  special_overflow ();
+  special ();
+
+  test_generic (2, 100, 100);
+
+  data_check ("data/tanh", mpfr_tanh, "mpfr_tanh");
+  bad_cases (mpfr_tanh, mpfr_atanh, "mpfr_tanh", 256, -128, 0,
+             4, 128, 800, 100);
+
+  tests_end_mpfr ();
+  return 0;
+}