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/* test file for digamma function
Copyright 2009-2020 Free Software Foundation, Inc.
Contributed by the AriC and Caramba 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 3 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.LESSER. If not, see
https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
#include "mpfr-test.h"
#define TEST_FUNCTION mpfr_digamma
#include "tgeneric.c"
static void
special (void)
{
mpfr_t x, y;
mpfr_init (x);
mpfr_init (y);
mpfr_set_inf (y, -1);
mpfr_set_inf (x, 1);
mpfr_digamma (y, x, MPFR_RNDN);
if (mpfr_inf_p (y) == 0 || mpfr_sgn (y) < 0)
{
printf ("error for Psi(+Inf)\n");
printf ("expected +Inf\n");
printf ("got ");
mpfr_dump (y);
exit (1);
}
mpfr_clear (x);
mpfr_clear (y);
}
int
main (int argc, char *argv[])
{
tests_start_mpfr ();
special ();
test_generic (MPFR_PREC_MIN, 200, 20);
data_check ("data/digamma", mpfr_digamma, "mpfr_digamma");
tests_end_mpfr ();
return 0;
}
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