diff options
Diffstat (limited to 'sysdeps/powerpc/q_qtoi.c')
-rw-r--r-- | sysdeps/powerpc/q_qtoi.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/sysdeps/powerpc/q_qtoi.c b/sysdeps/powerpc/q_qtoi.c deleted file mode 100644 index a2b1b3fe56..0000000000 --- a/sysdeps/powerpc/q_qtoi.c +++ /dev/null @@ -1,65 +0,0 @@ -/* 128-bit floating point to 32-bit fixed point signed integer. - Copyright (C) 1997 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 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 <quad_float.h> - -/* int _q_qtoi(const long double *a); - Convert 'a' to signed int by truncation. - - Special cases: - NaN: raise VXCVI, return 0x80000000 - SNaN: raise VXSNAN, VXCVI, and return 0x80000000 - >= 2^32: raise VXCVI, return 0x7fffffff - <= -2^32: raise VXCVI, return 0x80000000 - */ - -int -__q_qtoi(const unsigned long long a[2]) -{ - int ax, sgn; - unsigned long long a0; - - a0 = a[0]; - /* 'sgn' is -1 if 'a' is negative, 0 if positive. */ - sgn = (long long)a0 >> 63; - ax = (a0 >> 48 & 0x7fff) - 16383; - /* Deal with non-special cases. */ - if (ax <= 30) - /* If we had a '>>' operator that behaved properly with respect to - large shifts, we wouldn't need the '& -(ax >> 31)' term, which - clears 'result' if ax is negative. The '^ sgn) - sgn' part is - equivalent in this case to multiplication by 'sgn', but usually - faster. */ - return (((unsigned)(a0 >> 17 | 0x80000000) >> 31-ax & -(ax >> 31)) - ^ sgn) - sgn; - - /* Check for SNaN, if so raise VXSNAN. */ - if ((a0 >> 32 & 0x7fff8000) == 0x7fff0000 - && (a[1] | a0 & 0x00007fffffffffffULL) != 0) - set_fpscr_bit(FPSCR_VXSNAN); - - /* Treat all NaNs as large negative numbers. */ - sgn |= -cntlzw(~(a0 >> 32) & 0x7fff0000) >> 5; - - /* All the specials raise VXCVI. */ - set_fpscr_bit(FPSCR_VXCVI); - - /* Return 0x7fffffff (if a < 0) or 0x80000000 (otherwise). */ - return sgn ^ 0x7fffffff; -} |