mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 10:20:06 +00:00
5da9d1244a
definitions... * sysdeps/m68k/fpu/mathimpl.h: ... here. New file. * sysdeps/m68k/fpu/e_acos.c: Include "mathimpl.h". * sysdeps/m68k/fpu/e_atan2.c: Likewise. * sysdeps/m68k/fpu/e_fmod.c: Likewise. * sysdeps/m68k/fpu/e_pow.c: Likewise. * sysdeps/m68k/fpu/e_scalb.c: Likewise. * sysdeps/m68k/fpu/s_ccos.c: Likewise. * sysdeps/m68k/fpu/s_ccosh.c: Likewise. * sysdeps/m68k/fpu/s_cexp.c: Likewise. * sysdeps/m68k/fpu/s_csin.c: Likewise. * sysdeps/m68k/fpu/s_csinh.c: Likewise. * sysdeps/m68k/fpu/s_ilogb.c: Likewise. * sysdeps/m68k/fpu/s_llrint.c: Likewise. * sysdeps/m68k/fpu/s_llrintf.c: Likewise. * sysdeps/m68k/fpu/s_llrintl.c: Likewise. * sysdeps/m68k/fpu/s_modf.c: Likewise.
77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
/* Round argument to nearest integral value according to current rounding
|
|
direction.
|
|
Copyright (C) 1997, 1999 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <math.h>
|
|
#include "math_private.h"
|
|
#include "mathimpl.h"
|
|
|
|
long long int
|
|
__llrint (double x)
|
|
{
|
|
int32_t e;
|
|
u_int32_t h, l, s;
|
|
long long int result;
|
|
|
|
x = __m81_u(__rint) (x);
|
|
|
|
/* We could use __fixxfdi from libgcc, but here we can take advantage of
|
|
the known floating point format. */
|
|
EXTRACT_WORDS (h, l, x);
|
|
|
|
e = ((h >> 20) & 0x7ff) - 0x3ff;
|
|
if (e < 0)
|
|
return 0;
|
|
s = h;
|
|
h &= 0xfffff;
|
|
h |= 0x100000;
|
|
|
|
if (e < 63)
|
|
{
|
|
if (e > 52)
|
|
{
|
|
h <<= e - 52;
|
|
h |= l >> (84 - e);
|
|
l <<= e - 52;
|
|
result = ((long long int) h << 32) | l;
|
|
}
|
|
else if (e > 20)
|
|
{
|
|
l >>= 52 - e;
|
|
l |= h << (e - 20);
|
|
h >>= 52 - e;
|
|
result = ((long long int) h << 32) | l;
|
|
}
|
|
else
|
|
result = h >> (20 - e);
|
|
if (s & 0x80000000)
|
|
result = -result;
|
|
}
|
|
else
|
|
/* The number is too large or not finite. The standard leaves it
|
|
undefined what to return when the number is too large to fit in a
|
|
`long long int'. */
|
|
result = -1LL;
|
|
|
|
return result;
|
|
}
|
|
|
|
weak_alias (__llrint, llrint)
|