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/* Test file for mpfr_atanh.
Copyright 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation.
Adapted from tatan.c.
This file is part of the MPFR Library.
The 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 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 MPFR Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Place, Fifth Floor, Boston,
MA 02110-1301, USA. */
#include <stdio.h>
#include <stdlib.h>
#include "mpfr-test.h"
#define TEST_FUNCTION mpfr_atanh
#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);
tests_end_mpfr ();
return 0;
}
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