1  /* Multiple versions of llrintf.
       2     Copyright (C) 2017-2023 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 lrintf/__lrintf so that the compiler won't complain about the type
      19     mismatch with the IFUNC selector in strong_alias below.  */
      20  #define lrintf __hidden_lrintf
      21  #define __lrintf __hidden___lrintf
      22  
      23  #include <math.h>
      24  #undef lrintf
      25  #undef __lrintf
      26  #include "init-arch.h"
      27  #include <libm-alias-float.h>
      28  
      29  extern __typeof (__llrintf) __llrint_ppc64 attribute_hidden;
      30  extern __typeof (__llrintf) __llrint_power6x attribute_hidden;
      31  extern __typeof (__llrintf) __llrint_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]rint and l[l]rintf return long type.  So these
      36     functions have identical signatures and functionality, and can use a
      37     single implementation.  */
      38  libc_ifunc (__llrintf,
      39  	    (hwcap2 & PPC_FEATURE2_ARCH_2_07)
      40  	    ? __llrint_power8 :
      41  	    (hwcap & PPC_FEATURE_POWER6_EXT)
      42  	    ? __llrint_power6x
      43  	    : __llrint_ppc64);
      44  
      45  libm_alias_float (__llrint, llrint)
      46  strong_alias (__llrintf, __lrintf)
      47  libm_alias_float (__lrint, lrint)