From 46d6a24872b7fa2717f8f71b5e0598a14d38e1f6 Mon Sep 17 00:00:00 2001 From: Aurelien Jacquiot Date: Wed, 23 Feb 2011 13:04:59 +0100 Subject: The C6X port This adds support for the TI C6X family of processors. Signed-off-by: Mark Salter Signed-off-by: Aurelien Jacquiot Signed-off-by: Bernd Schmidt --- libc/sysdeps/linux/c6x/bits/nan.h | 57 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 libc/sysdeps/linux/c6x/bits/nan.h (limited to 'libc/sysdeps/linux/c6x/bits/nan.h') diff --git a/libc/sysdeps/linux/c6x/bits/nan.h b/libc/sysdeps/linux/c6x/bits/nan.h new file mode 100644 index 000000000..85225da9f --- /dev/null +++ b/libc/sysdeps/linux/c6x/bits/nan.h @@ -0,0 +1,57 @@ +/* `NAN' constant for IEEE 754 machines. + Copyright (C) 1992,1996,1997,1999,2004,2006 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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. */ + +#ifndef _MATH_H +# error "Never use directly; include instead." +#endif + +/* IEEE Not A Number. */ + +/* + * Copied from the common code and modified for TI tool wrapper. + * Copyright (C) 2010 Texas Instruments Incorporated + */ + +#if __GNUC_PREREQ(3,3) + +# define NAN (__builtin_nanf ("")) + +#elif defined __GNUC__ && ! defined __TI_TOOL_WRAPPER__ + +# define NAN \ + (__extension__ \ + ((union { unsigned __l __attribute__ ((__mode__ (__SI__))); float __d; }) \ + { __l: 0x7fc00000UL }).__d) + +#else + +# include + +# if __BYTE_ORDER == __BIG_ENDIAN +# define __nan_bytes { 0x7f, 0xc0, 0, 0 } +# endif +# if __BYTE_ORDER == __LITTLE_ENDIAN +# define __nan_bytes { 0, 0, 0xc0, 0x7f } +# endif + +static union { unsigned char __c[4]; float __d; } __nan_union + = { __nan_bytes }; +# define NAN (__nan_union.__d) + +#endif /* GCC. */ -- cgit v1.2.3