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Diffstat (limited to 'ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c')
-rw-r--r--ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c b/ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c
new file mode 100644
index 0000000000..dd5b95c730
--- /dev/null
+++ b/ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c
@@ -0,0 +1,65 @@
+/* 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <math.h>
+#include <math_private.h>
+#include "mathimpl.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)