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m68k: define __signbit inlines

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Andreas Schwab 2010-03-13 16:59:42 +01:00
parent dbd0094b3f
commit 326a03edf9
2 changed files with 24 additions and 1 deletions
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ChangeLog.m68k
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@ -1,5 +1,8 @@
2010-03-13 Andreas Schwab <schwab@linux-m68k.org> 2010-03-13 Andreas Schwab <schwab@linux-m68k.org>
* sysdeps/m68k/m680x0/fpu/bits/mathinline.h (__signbit)
(__signbitf, __signbitl): Define.
* sysdeps/unix/sysv/linux/m68k/sysdep.h (SYSCALL_ERROR_HANDLER): * sysdeps/unix/sysv/linux/m68k/sysdep.h (SYSCALL_ERROR_HANDLER):
Add variant for USE__THREAD. Add variant for USE__THREAD.

22
sysdeps/m68k/m680x0/fpu/bits/mathinline.h
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@ -1,5 +1,5 @@
/* Definitions of inline math functions implemented by the m68881/2. /* Definitions of inline math functions implemented by the m68881/2.
Copyright (C) 1991,92,93,94,96,97,98,99,2000,2002, 2003, 2004, 2008 Copyright (C) 1991,92,93,94,96,97,98,99,2000,2002, 2003, 2004, 2008, 2010
Free Software Foundation, Inc. Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
@ -85,6 +85,26 @@
: "=dm" (__result) : "f" (x), "f" (y)); \ : "=dm" (__result) : "f" (x), "f" (y)); \
__result != 0; }) __result != 0; })
# endif /* GCC 3.1 */ # endif /* GCC 3.1 */
/* Test for negative number. Used in the signbit() macro. */
__MATH_INLINE int
__NTH (__signbitf (float __x))
{
__extension__ union { float __f; int __i; } __u = { __f: __x };
return __u.__i < 0;
}
__MATH_INLINE int
__NTH (__signbit (double __x))
{
__extension__ union { double __d; int __i[2]; } __u = { __d: __x };
return __u.__i[0] < 0;
}
__MATH_INLINE int
__NTH (__signbitl (long double __x))
{
__extension__ union { long double __d; int __i[3]; } __u = { __d: __x };
return __u.__i[0] < 0;
}
#endif #endif