1 /* Multiple versions of llroundf. 2 Copyright (C) 2017-2022 Free Software Foundation, Inc. 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 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 /* Redefine lroundf/__lroundf so that the compiler won't complain about 19 the type mismatch with the IFUNC selector in strong_alias below. */ 20 #define lroundf __hidden_lroundf 21 #define __lroundf __hidden___lroundf 22 23 #include <math.h> 24 #undef lroundf 25 #undef __lroundf 26 #include "init-arch.h" 27 #include <libm-alias-float.h> 28 29 extern __typeof (__llroundf) __llroundf_ppc64 attribute_hidden; 30 extern __typeof (__llroundf) __llround_power6x attribute_hidden; 31 extern __typeof (__llroundf) __llround_power8 attribute_hidden; 32 33 /* The ppc64 ABI passes float and double parameters in 64bit floating point 34 registers (at least up to a point) as IEEE binary64 format, so effectively 35 of "double" type. Both l[l]round and l[l]roundf return long type. So these 36 functions have identical signatures and functionality, and can use a 37 single implementation. */ 38 libc_ifunc (__llroundf, 39 (hwcap2 & PPC_FEATURE2_ARCH_2_07) 40 ? __llround_power8 : 41 (hwcap & PPC_FEATURE_POWER6_EXT) 42 ? __llround_power6x 43 : __llroundf_ppc64); 44 45 libm_alias_float (__llround, llround) 46 strong_alias (__llroundf, __lroundf) 47 libm_alias_float (__lround, lround) 48