s_llrint.c

来自「glibc 2.9,最新版的C语言库函数」· C语言 代码 · 共 36 行

/* Round a double value to a long long in the current rounding mode.
   Copyright (C) 1997, 2006 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <math.h>
#include <math_ldbl_opt.h>

long long int
__llrint (double x)
{
  return (long long int) __rint (x);
}
weak_alias (__llrint, llrint)
#ifdef NO_LONG_DOUBLE
strong_alias (__llrint, __llrintl)
weak_alias (__llrint, llrintl)
#endif
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
compat_symbol (libm, __llrint, llrintl, GLIBC_2_1);
#endif