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-rw-r--r--sysdeps/powerpc/q_qtoi.c65
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diff --git a/sysdeps/powerpc/q_qtoi.c b/sysdeps/powerpc/q_qtoi.c
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+/* 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;
+}