mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 04:50:07 +00:00
75 lines
2.9 KiB
C
75 lines
2.9 KiB
C
|
/* 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_3)
|
||
|
|
#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_3); \
|
||
|
|
extern typeof(__c2_##func) __##func attribute_hidden; \
|
||
|
|
strong_alias (__c2_##func, __##func)
|