| /* Compatibility macros for old and new Alpha complex float ABI. |
| Copyright (C) 2004-2014 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 |
| <http://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> |
| |
| #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) |
