kc3-lang/libpng/contrib/powerpc-vsx/linux_aux.c

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• Hash : 77c3a392
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  Date : 2022-11-20T21:23:33
  

  Clean up comments and whitespace characters in source files
  
  Remove all remaining "last changed" version info from source comments.
  (The version control system maintains this information automatically.)
  
  Delete the trailing whitespace characters.
  

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• contrib/powerpc-vsx/linux_aux.c

• /* contrib/powerpc-vsx/linux_aux.c
   *
   * Copyright (c) 2017 Glenn Randers-Pehrson
   * Written by Vadim Barkov, 2017.
   *
   * This code is released under the libpng license.
   * For conditions of distribution and use, see the disclaimer
   * and license in png.h
   *
   * STATUS: TESTED
   * BUG REPORTS: png-mng-implement@sourceforge.net
   *
   * png_have_vsx implemented for Linux by using the auxiliary vector mechanism.
   *
   * This code is strict ANSI-C and is probably moderately portable; it does
   * however use <stdio.h> and it assumes that /proc/cpuinfo is never localized.
   */
  
  #include "sys/auxv.h"
  #include "png.h"
  
  static int
  png_have_vsx(png_structp png_ptr)
  {
     unsigned long auxv = getauxval(AT_HWCAP);
  
     PNG_UNUSED(png_ptr)
  
     if(auxv & (PPC_FEATURE_HAS_ALTIVEC|PPC_FEATURE_HAS_VSX))
        return 1;
     else
        return 0;
  }
  

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