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-rw-r--r--sysdeps/m68k/fpu/s_llrint.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/s_llrint.c b/sysdeps/m68k/fpu/s_llrint.c
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+/* 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 Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; 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)