diff options
Diffstat (limited to 'sysdeps/m68k/fpu/s_llrint.c')
-rw-r--r-- | sysdeps/m68k/fpu/s_llrint.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/s_llrint.c b/sysdeps/m68k/fpu/s_llrint.c new file mode 100644 index 0000000000..f5d0d51122 --- /dev/null +++ b/sysdeps/m68k/fpu/s_llrint.c @@ -0,0 +1,62 @@ +/* Round argument to nearest integral value according to current rounding + direction. + Copyright (C) 1997 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. */ + +#define __LIBC_M81_MATH_INLINES +#include <math.h> +#include "math_private.h" + +long long int +__llrint (long double x) +{ + int32_t se, sx; + u_int32_t h, l; + long long int result; + + x = __m81_u(__rintl) (x); + + /* We could use __fixxfdi from libgcc, but here we can take advantage of + the known floating point format. */ + GET_LDOUBLE_WORDS (se, h, l, x); + + sx = se & (1 << 15); + se = (se ^ sx) - 0x3fff; + + if (se < 64) + { + if (se > 31) + result = (((long long int) (h >> (63 - se)) << 32) + | (l >> (63 - se)) | (h << (se - 31))); + else + result = h >> (31 - se); + if (sx) + result = -result; + } + else + /* Too large. The number is either +-inf or NaN or it is too + large to be effected by rounding. 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) |