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Diffstat (limited to 'sysdeps/m68k/fpu/s_rinttoll.c')
-rw-r--r--sysdeps/m68k/fpu/s_rinttoll.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/s_rinttoll.c b/sysdeps/m68k/fpu/s_rinttoll.c
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+/* 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
+__rinttoll (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 (__rinttoll, rinttoll)