diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/s_round.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_round.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_round.c b/sysdeps/ieee754/dbl-64/s_round.c deleted file mode 100644 index 390e3f7180..0000000000 --- a/sysdeps/ieee754/dbl-64/s_round.c +++ /dev/null @@ -1,83 +0,0 @@ -/* Round double to integer away from zero. - Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. - - 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 <math.h> - -#include <math_private.h> - - -double -__round (double x) -{ - int32_t i0, j0; - u_int32_t i1; - - EXTRACT_WORDS (i0, i1, x); - j0 = ((i0 >> 20) & 0x7ff) - 0x3ff; - if (j0 < 20) - { - if (j0 < 0) - { - i0 &= 0x80000000; - if (j0 == -1) - i0 |= 0x3ff00000; - i1 = 0; - } - else - { - u_int32_t i = 0x000fffff >> j0; - if (((i0 & i) | i1) == 0) - /* X is integral. */ - return x; - - i0 += 0x00080000 >> j0; - i0 &= ~i; - i1 = 0; - } - } - else if (j0 > 51) - { - if (j0 == 0x400) - /* Inf or NaN. */ - return x + x; - else - return x; - } - else - { - u_int32_t i = 0xffffffff >> (j0 - 20); - if ((i1 & i) == 0) - /* X is integral. */ - return x; - - u_int32_t j = i1 + (1 << (51 - j0)); - if (j < i1) - i0 += 1; - i1 = j; - i1 &= ~i; - } - - INSERT_WORDS (x, i0, i1); - return x; -} -weak_alias (__round, round) -#ifdef NO_LONG_DOUBLE -strong_alias (__round, __roundl) -weak_alias (__round, roundl) -#endif |