mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
61 lines
2.4 KiB
C
61 lines
2.4 KiB
C
/* Compatibility macros for old and new Alpha complex float ABI.
|
|
Copyright (C) 2004-2020 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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* 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. */
|
|
|
|
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
|
|
|
|
/* Get the proper symbol versions defined for each function. */
|
|
|
|
#include <shlib-compat.h>
|
|
#include <libm-alias-float.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##f); \
|
|
versioned_symbol (libm, __c2_##func##f, func##f, GLIBC_2_3_4); \
|
|
extern typeof(__c2_##func##f) __##func##f attribute_hidden; \
|
|
strong_alias (__c2_##func##f, __##func##f); \
|
|
libm_alias_float_other (__##func, func)
|