m68k: define __signbit inlines
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@ -1,5 +1,8 @@
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2010-03-13 Andreas Schwab <schwab@linux-m68k.org>
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* sysdeps/m68k/m680x0/fpu/bits/mathinline.h (__signbit)
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(__signbitf, __signbitl): Define.
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* sysdeps/unix/sysv/linux/m68k/sysdep.h (SYSCALL_ERROR_HANDLER):
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Add variant for USE__THREAD.
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@ -1,5 +1,5 @@
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/* Definitions of inline math functions implemented by the m68881/2.
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Copyright (C) 1991,92,93,94,96,97,98,99,2000,2002, 2003, 2004, 2008
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Copyright (C) 1991,92,93,94,96,97,98,99,2000,2002, 2003, 2004, 2008, 2010
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@ -85,6 +85,26 @@
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: "=dm" (__result) : "f" (x), "f" (y)); \
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__result != 0; })
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# endif /* GCC 3.1 */
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/* Test for negative number. Used in the signbit() macro. */
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__MATH_INLINE int
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__NTH (__signbitf (float __x))
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{
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__extension__ union { float __f; int __i; } __u = { __f: __x };
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return __u.__i < 0;
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}
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__MATH_INLINE int
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__NTH (__signbit (double __x))
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{
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__extension__ union { double __d; int __i[2]; } __u = { __d: __x };
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return __u.__i[0] < 0;
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}
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__MATH_INLINE int
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__NTH (__signbitl (long double __x))
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{
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__extension__ union { long double __d; int __i[3]; } __u = { __d: __x };
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return __u.__i[0] < 0;
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}
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#endif
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