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path: root/math/libm-test-round.inc
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/* Test round.
   Copyright (C) 1997-2017 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C 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 C 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 C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include "libm-test-driver.c"

static const struct test_f_f_data round_test_data[] =
  {
    TEST_f_f (round, 0, 0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, minus_zero, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, plus_infty, plus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, minus_infty, minus_infty, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -qnan_value, qnan_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),
    TEST_f_f (round, -snan_value, qnan_value, NO_INEXACT_EXCEPTION|INVALID_EXCEPTION),

    TEST_f_f (round, min_subnorm_value, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, min_value, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 1, 1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 2, 2, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p23, 0x1p23, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p24, 0x1p24, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p25, 0x1p25, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p52, 0x1p52, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p53, 0x1p53, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p54, 0x1p54, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p63, 0x1p63, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p64, 0x1p64, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p65, 0x1p65, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p105, 0x1p105, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p106, 0x1p106, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p107, 0x1p107, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p112, 0x1p112, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p113, 0x1p113, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0x1p114, 0x1p114, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, max_value, max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -min_subnorm_value, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -min_value, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -1, -1, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -2, -2, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p23, -0x1p23, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p24, -0x1p24, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p25, -0x1p25, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p52, -0x1p52, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p53, -0x1p53, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p54, -0x1p54, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p63, -0x1p63, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p64, -0x1p64, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p65, -0x1p65, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p105, -0x1p105, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p106, -0x1p106, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p107, -0x1p107, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p112, -0x1p112, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p113, -0x1p113, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0x1p114, -0x1p114, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -max_value, -max_value, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),

    TEST_f_f (round, 0.2L, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0.2L, minus_zero, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0.5, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0.5, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0.8L, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0.8L, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 1.5, 2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -1.5, -2.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0.1, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0.25, 0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0.625, 1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0.1, -0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0.25, -0.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0.625, -1.0, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 2097152.5, 2097153, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -2097152.5, -2097153, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),

#if !TEST_COND_binary32
    TEST_f_f (round, 0xffffffffffff.0p0L, 0xffffffffffff.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0xffffffffffff.4p0L, 0xffffffffffff.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0xffffffffffff.8p0L, 0x1000000000000.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 0xffffffffffff.cp0L, 0x1000000000000.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0xffffffffffff.0p0L, -0xffffffffffff.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0xffffffffffff.4p0L, -0xffffffffffff.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0xffffffffffff.8p0L, -0x1000000000000.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -0xffffffffffff.cp0L, -0x1000000000000.0p0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif

#if MANT_DIG >= 64
    /* The result can only be represented in long double.  */
    TEST_f_f (round, 4503599627370495.5L, 4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 4503599627370496.25L, 4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 4503599627370496.5L, 4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 4503599627370496.75L, 4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 4503599627370497.5L, 4503599627370498.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
# if MANT_DIG > 100
    TEST_f_f (round, 4503599627370494.5000000000001L, 4503599627370495.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 4503599627370495.5000000000001L, 4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 4503599627370496.5000000000001L, 4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
# endif

    TEST_f_f (round, -4503599627370495.5L, -4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -4503599627370496.25L, -4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -4503599627370496.5L, -4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -4503599627370496.75L, -4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -4503599627370497.5L, -4503599627370498.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
# if MANT_DIG > 100
    TEST_f_f (round, -4503599627370494.5000000000001L, -4503599627370495.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -4503599627370495.5000000000001L, -4503599627370496.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -4503599627370496.5000000000001L, -4503599627370497.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
# endif

    TEST_f_f (round, 9007199254740991.5L, 9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 9007199254740992.25L, 9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 9007199254740992.5L, 9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 9007199254740992.75L, 9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 9007199254740993.5L, 9007199254740994.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),

    TEST_f_f (round, -9007199254740991.5L, -9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -9007199254740992.25L, -9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -9007199254740992.5L, -9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -9007199254740992.75L, -9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -9007199254740993.5L, -9007199254740994.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),

# if MANT_DIG > 100
    TEST_f_f (round, 9007199254740991.0000000000001L, 9007199254740991.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 9007199254740992.0000000000001L, 9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 9007199254740993.0000000000001L, 9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 9007199254740991.5000000000001L, 9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 9007199254740992.5000000000001L, 9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 9007199254740993.5000000000001L, 9007199254740994.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),

    TEST_f_f (round, -9007199254740991.0000000000001L, -9007199254740991.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -9007199254740992.0000000000001L, -9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -9007199254740993.0000000000001L, -9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -9007199254740991.5000000000001L, -9007199254740992.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -9007199254740992.5000000000001L, -9007199254740993.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -9007199254740993.5000000000001L, -9007199254740994.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
# endif

    TEST_f_f (round, 72057594037927935.5L, 72057594037927936.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 72057594037927936.25L, 72057594037927936.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 72057594037927936.5L, 72057594037927937.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 72057594037927936.75L, 72057594037927937.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 72057594037927937.5L, 72057594037927938.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),

    TEST_f_f (round, -72057594037927935.5L, -72057594037927936.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -72057594037927936.25L, -72057594037927936.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -72057594037927936.5L, -72057594037927937.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -72057594037927936.75L, -72057594037927937.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -72057594037927937.5L, -72057594037927938.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),

    /* Check cases where first double is a exact integer higher than 2^52 and
       the precision is determined by second long double for IBM long double.  */
    TEST_f_f (round,  34503599627370498.515625L, 34503599627370499.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -34503599627370498.515625L, -34503599627370499.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
# if MANT_DIG >= 106
    TEST_f_f (round,  1192568192774434123539907640624.484375L, 1192568192774434123539907640624.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, -1192568192774434123539907640624.484375L, -1192568192774434123539907640624.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
# endif

    TEST_f_f (round, 10141204801825835211973625643007.5L, 10141204801825835211973625643008.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 10141204801825835211973625643008.25L, 10141204801825835211973625643008.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 10141204801825835211973625643008.5L, 10141204801825835211973625643009.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 10141204801825835211973625643008.75L, 10141204801825835211973625643009.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
    TEST_f_f (round, 10141204801825835211973625643009.5L, 10141204801825835211973625643010.0L, NO_INEXACT_EXCEPTION|ERRNO_UNCHANGED),
#endif
  };

static void
round_test (void)
{
  ALL_RM_TEST (round, 1, round_test_data, RUN_TEST_LOOP_f_f, END);
}

static void
do_test (void)
{
  round_test ();
}

/*
 * Local Variables:
 * mode:c
 * End:
 */