diff options
Diffstat (limited to 'sysdeps/m68k/fpu/s_llrintf.c')
-rw-r--r-- | sysdeps/m68k/fpu/s_llrintf.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/s_llrintf.c b/sysdeps/m68k/fpu/s_llrintf.c new file mode 100644 index 0000000000..3c8528c4e8 --- /dev/null +++ b/sysdeps/m68k/fpu/s_llrintf.c @@ -0,0 +1,66 @@ +/* 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 +__llrintf (float x) +{ + int32_t e; + u_int32_t i, s; + long long int result; + + x = __m81_u(__rintf) (x); + + GET_FLOAT_WORD (i, x); + + e = ((i >> 23) & 0xff) - 0x7f; + if (e < 0) + return 0; + s = i; + i &= 0x7fffff; + i |= 0x800000; + + if (e < 63) + { + if (e > 55) + result = (long long int) (i << (e - 55)) << 32; + else if (e > 31) + result = (((long long int) (i >> (55 - e)) << 32) | (i << (e - 23))); + else if (e > 23) + result = i << (e - 23); + else + result = i >> (23 - 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 (__llrintf, llrintf) |