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/* Test of j0() function.
   Copyright (C) 2010-2025 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */

#include <config.h>

#include <math.h>

#include "signature.h"
SIGNATURE_CHECK (j0, double, (double));

#include "macros.h"

volatile double x;
double y;

int
main ()
{
  /* A particular value.  */
  x = 3.8;
  y = j0 (x);
  ASSERT (y >= -0.4025564102 && y <= -0.4025564101);

  return test_exit_status;
}
kc3-lang/gnulib/tests/test-j0.c

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tests/test-j0.c
