Imported gcc-4.4.3

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

diff --git a/mpfr/tests/tatanh.c b/mpfr/tests/tatanh.c
new file mode 100644 (file)
index 0000000..08b2715
--- /dev/null
+++ b/mpfr/tests/tatanh.c
@@ -0,0 +1,189 @@
+/* Test file for mpfr_atanh.
+
+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_atanh
+#define TEST_RANDOM_EMAX 7
+#include "tgeneric.c"
+
+static void
+special (void)
+{
+  mpfr_t x, y, z;
+  int i;
+
+  mpfr_init (x);
+  mpfr_init (y);
+
+  MPFR_SET_INF(x);
+  mpfr_set_ui (y, 0, GMP_RNDN);
+  mpfr_atanh (x, y, GMP_RNDN);
+  if (MPFR_IS_INF(x) || MPFR_IS_NAN(x) )
+    {
+      printf ("Inf flag not clears in atanh!\n");
+      exit (1);
+    }
+
+  MPFR_SET_NAN(x);
+  mpfr_atanh (x, y, GMP_RNDN);
+  if (MPFR_IS_NAN(x) || MPFR_IS_INF(x))
+    {
+      printf ("NAN flag not clears in atanh!\n");
+      exit (1);
+    }
+
+  /* atanh(+/-x) = NaN if x > 1 */
+  for (i = 3; i <= 6; i++)
+    {
+      mpfr_set_si (x, i, GMP_RNDN);
+      mpfr_div_2ui (x, x, 1, GMP_RNDN);
+      mpfr_atanh (y, x, GMP_RNDN);
+      if (!mpfr_nan_p (y))
+        {
+          printf ("Error: mpfr_atanh(%d/2) <> NaN\n", i);
+          exit (1);
+        }
+      mpfr_neg (x, x, GMP_RNDN);
+      mpfr_atanh (y, x, GMP_RNDN);
+      if (!mpfr_nan_p (y))
+        {
+          printf ("Error: mpfr_atanh(-%d/2) <> NaN\n", i);
+          exit (1);
+        }
+    }
+
+  /* atanh(+0) = +0, atanh(-0) = -0 */
+  mpfr_set_ui (x, 0, GMP_RNDN);
+  mpfr_atanh (y, x, GMP_RNDN);
+  if (mpfr_cmp_ui (y, 0) || mpfr_sgn (y) < 0)
+    {
+      printf ("Error: mpfr_atanh(+0) <> +0\n");
+      exit (1);
+    }
+  mpfr_neg (x, x, GMP_RNDN);
+  mpfr_atanh (y, x, GMP_RNDN);
+  if (mpfr_cmp_ui (y, 0) || mpfr_sgn (y) > 0)
+    {
+      printf ("Error: mpfr_atanh(-0) <> -0\n");
+      exit (1);
+    }
+
+  MPFR_SET_NAN(x);
+  mpfr_atanh (y, x, GMP_RNDN);
+  if (!mpfr_nan_p (y))
+    {
+      printf ("Error: mpfr_atanh(NaN) <> NaN\n");
+      exit (1);
+    }
+
+  mpfr_set_inf (x, 1);
+  mpfr_atanh (y, x, GMP_RNDN);
+  if (!mpfr_nan_p (y))
+    {
+      printf ("Error: mpfr_atanh(+Inf) <> NaN\n");
+      mpfr_print_binary (y); printf ("\n");
+      exit (1);
+    }
+
+  mpfr_set_inf (x, -1);
+  mpfr_atanh (y, x, GMP_RNDN);
+  if (!mpfr_nan_p (y))
+    {
+      printf ("Error: mpfr_atanh(-Inf) <> NaN\n");
+      exit (1);
+    }
+
+  mpfr_set_ui (x, 1, GMP_RNDN);
+  mpfr_atanh (y, x, GMP_RNDN);
+  if (!mpfr_inf_p (y) || mpfr_sgn (y) < 0)
+    {
+      printf ("Error: mpfr_atanh(1) <> +Inf\n");
+      exit (1);
+    }
+
+  mpfr_set_si (x, -1, GMP_RNDN);
+  mpfr_atanh (y, x, GMP_RNDN);
+  if (!mpfr_inf_p (y) || mpfr_sgn (y) > 0)
+    {
+      printf ("Error: mpfr_atanh(-1) <> -Inf\n");
+      exit (1);
+    }
+
+  mpfr_set_prec (x, 32);
+  mpfr_set_prec (y, 32);
+
+  mpfr_set_str_binary (x, "0.10001000001001011000100001E-6");
+  mpfr_atanh (x, x, GMP_RNDN);
+  mpfr_set_str_binary (y, "0.10001000001001100101010110100001E-6");
+  if (mpfr_cmp (x, y))
+    {
+      printf ("Error: mpfr_atanh (1)\n");
+      exit (1);
+    }
+
+  mpfr_set_str_binary (x, "-0.1101011110111100111010011001011E-1");
+  mpfr_atanh (x, x, GMP_RNDN);
+  mpfr_set_str_binary (y, "-0.11100110000100001111101100010111E-1");
+  if (mpfr_cmp (x, y))
+    {
+      printf ("Error: mpfr_atanh (2)\n");
+      exit (1);
+    }
+
+  mpfr_set_prec (x, 33);
+  mpfr_set_prec (y, 43);
+  mpfr_set_str_binary (x, "0.111001101100000110011001010000101");
+  mpfr_atanh (y, x, GMP_RNDZ);
+  mpfr_init2 (z, 43);
+  mpfr_set_str_binary (z, "1.01111010110001101001000000101101011110101");
+  if (mpfr_cmp (y, z))
+    {
+      printf ("Error: mpfr_atanh (3)\n");
+      mpfr_print_binary (y); printf ("\n");
+      exit (1);
+    }
+
+  mpfr_clear (x);
+  mpfr_clear (y);
+  mpfr_clear (z);
+}
+
+int
+main (int argc, char *argv[])
+{
+  tests_start_mpfr ();
+
+  special ();
+
+  test_generic (2, 100, 25);
+
+  data_check ("data/atanh", mpfr_atanh, "mpfr_atanh");
+  bad_cases (mpfr_atanh, mpfr_tanh, "mpfr_atanh", 256, -128, 9,
+             4, 128, 800, 100);
+
+  tests_end_mpfr ();
+  return 0;
+}