| /* Round double value to long long int. |
| Copyright (C) 1997-2014 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 <math.h> |
| #include <math_ldbl_opt.h> |
| |
| /* Round to the nearest integer, with values exactly on a 0.5 boundary |
| rounded away from zero, regardless of the current rounding mode. |
| If (long long)x, when x is out of range of a long long, clips at |
| LLONG_MAX or LLONG_MIN, then this implementation also clips. */ |
| |
| long long int |
| __llround (double x) |
| { |
| long long xr = (long long) x; |
| double xrf = (double) xr; |
| |
| if (x >= 0.0) |
| { |
| if (x - xrf >= 0.5) |
| xr += (long long) ((unsigned long long) xr + 1) > 0; |
| } |
| else |
| { |
| if (xrf - x >= 0.5) |
| xr -= (long long) ((unsigned long long) xr - 1) < 0; |
| } |
| return xr; |
| } |
| weak_alias (__llround, llround) |
| #ifdef NO_LONG_DOUBLE |
| strong_alias (__llround, __llroundl) |
| weak_alias (__llround, llroundl) |
| #endif |
| #if LONG_DOUBLE_COMPAT (libm, GLIBC_2_1) |
| compat_symbol (libm, __llround, llroundl, GLIBC_2_1); |
| #endif |
