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9e42ca8f | 1 | /* Compatibility macros for old and new Alpha complex float ABI. |
04277e02 | 2 | Copyright (C) 2004-2019 Free Software Foundation, Inc. |
9e42ca8f RH |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
9e42ca8f | 18 | |
5556231d | 19 | /* The behaviour of complex float changed between GCC 3.3 and 3.4. |
9e42ca8f RH |
20 | |
21 | In 3.3 and before (below, complex version 1, or "c1"), complex float | |
22 | values were packed into one floating point register. | |
23 | ||
24 | In 3.4 and later (below, complex version 2, or "c2"), GCC changed to | |
25 | follow the official Tru64 ABI, which passes the components of a complex | |
26 | as separate parameters. */ | |
27 | ||
c0b21b69 | 28 | typedef union { double d; _Complex float cf; } c1_compat; |
9e42ca8f RH |
29 | # define c1_cfloat_decl(x) double x |
30 | # define c1_cfloat_real(x) __real__ c1_cfloat_value (x) | |
31 | # define c1_cfloat_imag(x) __imag__ c1_cfloat_value (x) | |
32 | # define c1_cfloat_value(x) (((c1_compat *)(void *)&x)->cf) | |
33 | # define c1_cfloat_rettype double | |
34 | # define c1_cfloat_return(x) ({ c1_compat _; _.cf = (x); _.d; }) | |
c0b21b69 | 35 | |
9e42ca8f RH |
36 | # define c2_cfloat_decl(x) _Complex float x |
37 | # define c2_cfloat_real(x) __real__ x | |
38 | # define c2_cfloat_imag(x) __imag__ x | |
39 | # define c2_cfloat_value(x) x | |
40 | # define c2_cfloat_rettype _Complex float | |
41 | # define c2_cfloat_return(x) x | |
9e42ca8f RH |
42 | |
43 | /* Get the proper symbol versions defined for each function. */ | |
44 | ||
45 | #include <shlib-compat.h> | |
f433d0b3 | 46 | #include <libm-alias-float.h> |
9e42ca8f | 47 | |
2de6922e | 48 | #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_3_4) |
9e42ca8f RH |
49 | #define cfloat_versions_compat(func) \ |
50 | compat_symbol (libm, __c1_##func, func, GLIBC_2_1) | |
51 | #else | |
52 | #define cfloat_versions_compat(func) | |
53 | #endif | |
54 | ||
55 | #define cfloat_versions(func) \ | |
f433d0b3 JM |
56 | cfloat_versions_compat(func##f); \ |
57 | versioned_symbol (libm, __c2_##func##f, func##f, GLIBC_2_3_4); \ | |
58 | extern typeof(__c2_##func##f) __##func##f attribute_hidden; \ | |
59 | strong_alias (__c2_##func##f, __##func##f); \ | |
60 | libm_alias_float_other (__##func, func) |