1 /* contrib/powerpc-vsx/linux_aux.c
3 * Copyright (c) 2017 Glenn Randers-Pehrson
4 * Written by Vadim Barkov, 2017.
5 * Last changed in libpng 1.6.29 [March 16, 2017]
7 * This code is released under the libpng license.
8 * For conditions of distribution and use, see the disclaimer
12 * BUG REPORTS: png-mng-implement@sourceforge.net
14 * png_have_vsx implemented for Linux by using the auxiliary vector mechanism.
16 * This code is strict ANSI-C and is probably moderately portable; it does
17 * however use <stdio.h> and it assumes that /proc/cpuinfo is never localized.
24 png_have_vsx(png_structp png_ptr)
26 unsigned long auxv = getauxval(AT_HWCAP);
30 if(auxv & (PPC_FEATURE_HAS_ALTIVEC|PPC_FEATURE_HAS_VSX))