PNG_ARM_NEON_IMPLEMENTATION   29 arm/filter_neon.S #if PNG_ARM_NEON_IMPLEMENTATION == 2 /* hand-coded assembler */
PNG_ARM_NEON_IMPLEMENTATION   18 arm/filter_neon_intrinsics.c #if PNG_ARM_NEON_IMPLEMENTATION == 1 /* intrinsics code from pngpriv.h */
PNG_ARM_NEON_IMPLEMENTATION  154 pngpriv.h      #  ifndef PNG_ARM_NEON_IMPLEMENTATION
PNG_ARM_NEON_IMPLEMENTATION  177 pngpriv.h      #  ifndef PNG_ARM_NEON_IMPLEMENTATION