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-rw-r--r--sysdeps/alpha/fpu/cfloat-compat.h74
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diff --git a/sysdeps/alpha/fpu/cfloat-compat.h b/sysdeps/alpha/fpu/cfloat-compat.h
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-/* Compatibility macros for old and new Alpha complex float ABI.
- Copyright (C) 2004 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. */
-
-/* The behaviour of complex float changed between GCC 3.3 and 3.4.
-
- In 3.3 and before (below, complex version 1, or "c1"), complex float
- values were packed into one floating point register.
-
- In 3.4 and later (below, complex version 2, or "c2"), GCC changed to
- follow the official Tru64 ABI, which passes the components of a complex
- as separate parameters. */
-
-#if __GNUC_PREREQ(3,4)
- typedef union { double d; _Complex float cf; } c1_compat;
-# define c1_cfloat_decl(x) double x
-# define c1_cfloat_real(x) __real__ c1_cfloat_value (x)
-# define c1_cfloat_imag(x) __imag__ c1_cfloat_value (x)
-# define c1_cfloat_value(x) (((c1_compat *)(void *)&x)->cf)
-# define c1_cfloat_rettype double
-# define c1_cfloat_return(x) ({ c1_compat _; _.cf = (x); _.d; })
-# define c2_cfloat_decl(x) _Complex float x
-# define c2_cfloat_real(x) __real__ x
-# define c2_cfloat_imag(x) __imag__ x
-# define c2_cfloat_value(x) x
-# define c2_cfloat_rettype _Complex float
-# define c2_cfloat_return(x) x
-#else
-# define c1_cfloat_decl(x) _Complex float x
-# define c1_cfloat_real(x) __real__ x
-# define c1_cfloat_imag(x) __imag__ x
-# define c1_cfloat_value(x) x
-# define c1_cfloat_rettype _Complex float
-# define c1_cfloat_return(x) x
-# define c2_cfloat_decl(x) float x ## r, float x ## i
-# define c2_cfloat_real(x) x ## r
-# define c2_cfloat_imag(x) x ## i
-# define c2_cfloat_value(x) \
- ({ _Complex float _; __real__ _ = x##r; __imag__ _ = x##i; _; })
-# define c2_cfloat_rettype double _Complex
-# define c2_cfloat_return(x) x
-#endif
-
-/* Get the proper symbol versions defined for each function. */
-
-#include <shlib-compat.h>
-
-#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_3_4)
-#define cfloat_versions_compat(func) \
- compat_symbol (libm, __c1_##func, func, GLIBC_2_1)
-#else
-#define cfloat_versions_compat(func)
-#endif
-
-#define cfloat_versions(func) \
- cfloat_versions_compat(func); \
- versioned_symbol (libm, __c2_##func, func, GLIBC_2_3_4); \
- extern typeof(__c2_##func) __##func attribute_hidden; \
- strong_alias (__c2_##func, __##func)