Support for MSVC compiler: Avoid division by a literal 0. * lib/math.in.h (NAN): Define through a function call also on MSVC. * m4/frexp.m4 (gl_FUNC_FREXP_WORKS): Divide by 'zero' instead of 0.0. * m4/printf.m4 (gl_PRINTF_INFINITE, gl_PRINTF_DIRECTIVE_A, gl_PRINTF_DIRECTIVE_F, gl_PRINTF_FLAG_ZERO): Likewise. (gl_PRINTF_INFINITE_LONG_DOUBLE): Divide by 'zeroL' instead of 0.0L. * tests/infinity.h: New file. * tests/nan.h (NaNf, NaNd, NaNl): Define through a function call also on MSVC. * tests/test-ceilf1.c: Include infinity.h. (main): Use Infinityf. * tests/test-ceil1.c: Include infinity.h. (main): Use Infinityd. * tests/test-ceill.c: Include infinity.h. (main): Use Infinityl. * tests/test-dprintf-posix.c: Include infinity.h. (test_function): Use Infinityd. * tests/test-floorf1.c: Include infinity.h. (main): Use Infinityf. * tests/test-floor1.c: Include infinity.h. (main): Use Infinityd. * tests/test-floorl.c: Include infinity.h. (main): Use Infinityl. * tests/test-fprintf-posix.c: Include infinity.h. (test_function): Use Infinityd. * tests/test-frexp.c: Include infinity.h. (main): Use Infinityd. * tests/test-frexpl.c: Include infinity.h. (main): Use Infinityl. * tests/test-isfinite.c: Include infinity.h. (test_isfinitef): Use Infinityf. (test_isfinited): Use Infinityd. (test_isfinitel): Use Infinityl. * tests/test-isinf.c: Include infinity.h. (test_isinff): Use Infinityf. (test_isinfd): Use Infinityd. (test_isinfl): Use Infinityl. * tests/test-isnan.c: Include infinity.h. (test_float): Use Infinityf. (test_double): Use Infinityd. (test_long_double): Use Infinityl. * tests/test-isnanf.h: Include infinity.h. (main): Use Infinityf. * tests/test-isnand.h: Include infinity.h. (main): Use Infinityd. * tests/test-isnanl.h: Include infinity.h. (main): Use Infinityl. * tests/test-ldexpl.c: Include infinity.h. (main): Use Infinityl. * tests/test-printf-posix.h: Include infinity.h. (test_function): Use Infinityd. * tests/test-roundf1.c: Include infinity.h. (main): Use Infinityf. * tests/test-round1.c: Include infinity.h. (main): Use Infinityd. * tests/test-roundl.c: Include infinity.h. (main): Use Infinityl. * tests/test-signbit.c: Include infinity.h. (test_signbitf): Use Infinityf. (test_signbitd): Use Infinityd. (test_signbitl): Use Infinityl. * tests/test-snprintf-posix.h: Include infinity.h. (test_function): Use Infinityd, Infinityl. * tests/test-sprintf-posix.h: Include infinity.h. (test_function): Use Infinityd, Infinityl. * tests/test-truncf1.c: Include infinity.h. (main): Use Infinityf. * tests/test-trunc1.c: Include infinity.h. (main): Use Infinityd. * tests/test-truncl.c: Include infinity.h. (main): Use Infinityl. * tests/test-vasnprintf-posix.c: Include infinity.h. (test_function): Use Infinityd, Infinityl. * tests/test-vasprintf-posix.c: Include infinity.h. (test_function): Use Infinityd, Infinityl. * modules/ceilf-tests (Files): Add tests/infinity.h. * modules/ceil-tests (Files): Likewise. * modules/ceill-tests (Files): Likewise. * modules/dprintf-posix-tests (Files): Likewise. * modules/floorf-tests (Files): Likewise. * modules/floor-tests (Files): Likewise. * modules/floorl-tests (Files): Likewise. * modules/fprintf-posix-tests (Files): Likewise. * modules/frexp-tests (Files): Likewise. * modules/frexp-nolibm-tests (Files): Likewise. * modules/frexpl-tests (Files): Likewise. * modules/frexpl-nolibm-tests (Files): Likewise. * modules/isfinite-tests (Files): Likewise. * modules/isinf-tests (Files): Likewise. * modules/isnan-tests (Files): Likewise. * modules/isnanf-tests (Files): Likewise. * modules/isnanf-nolibm-tests (Files): Likewise. * modules/isnand-tests (Files): Likewise. * modules/isnand-nolibm-tests (Files): Likewise. * modules/isnanl-tests (Files): Likewise. * modules/isnanl-nolibm-tests (Files): Likewise. * modules/ldexpl-tests (Files): Likewise. * modules/printf-posix-tests (Files): Likewise. * modules/roundf-tests (Files): Likewise. * modules/round-tests (Files): Likewise. * modules/roundl-tests (Files): Likewise. * modules/signbit-tests (Files): Likewise. * modules/snprintf-posix-tests (Files): Likewise. * modules/sprintf-posix-tests (Files): Likewise. * modules/truncf-tests (Files): Likewise. * modules/trunc-tests (Files): Likewise. * modules/truncl-tests (Files): Likewise. * modules/vasnprintf-posix-tests (Files): Likewise. * modules/vasprintf-posix-tests (Files): Likewise. * modules/vdprintf-posix-tests (Files): Likewise. * modules/vfprintf-posix-tests (Files): Likewise. * modules/vprintf-posix-tests (Files): Likewise. * modules/vsnprintf-posix-tests (Files): Likewise. * modules/vsprintf-posix-tests (Files): Likewise. * modules/xprintf-posix-tests (Files): Likewise.

/* Test of rounding to nearest, breaking ties away from zero.
   Copyright (C) 2007-2011 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, 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, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

/* Written by Ben Pfaff <blp@gnu.org>, 2007.
   Based heavily on Bruno Haible's test-truncf.c. */

#include <config.h>

#include <math.h>

#include "signature.h"
SIGNATURE_CHECK (roundf, float, (float));

#include "isnanf-nolibm.h"
#include "minus-zero.h"
#include "infinity.h"
#include "nan.h"
#include "macros.h"

int
main ()
{
  /* Zero.  */
  ASSERT (roundf (0.0f) == 0.0f);
  ASSERT (roundf (minus_zerof) == 0.0f);
  /* Positive numbers.  */
  ASSERT (roundf (0.3f) == 0.0f);
  ASSERT (roundf (0.5f) == 1.0f);
  ASSERT (roundf (0.7f) == 1.0f);
  ASSERT (roundf (1.0f) == 1.0f);
  ASSERT (roundf (1.5f) == 2.0f);
  ASSERT (roundf (2.5f) == 3.0f);
  ASSERT (roundf (1.999f) == 2.0f);
  ASSERT (roundf (2.0f) == 2.0f);
  ASSERT (roundf (65535.99f) == 65536.0f);
  ASSERT (roundf (65536.0f) == 65536.0f);
  ASSERT (roundf (65536.01f) == 65536.0f);
  ASSERT (roundf (2.341e31f) == 2.341e31f);
  /* Negative numbers.  */
  ASSERT (roundf (-0.3f) == 0.0f);
  ASSERT (roundf (-0.5f) == -1.0f);
  ASSERT (roundf (-0.7f) == -1.0f);
  ASSERT (roundf (-1.0f) == -1.0f);
  ASSERT (roundf (-1.5f) == -2.0f);
  ASSERT (roundf (-2.5f) == -3.0f);
  ASSERT (roundf (-1.999f) == -2.0f);
  ASSERT (roundf (-2.0f) == -2.0f);
  ASSERT (roundf (-65535.99f) == -65536.0f);
  ASSERT (roundf (-65536.0f) == -65536.0f);
  ASSERT (roundf (-65536.01f) == -65536.0f);
  ASSERT (roundf (-2.341e31f) == -2.341e31f);
  /* Infinite numbers.  */
  ASSERT (roundf (Infinityf ()) == Infinityf ());
  ASSERT (roundf (- Infinityf ()) == - Infinityf ());
  /* NaNs.  */
  ASSERT (isnanf (roundf (NaNf ())));

  return 0;
}