PNG_ARM_NEON_IMPLEMENTATION  167 pngpriv.h      #              define PNG_ARM_NEON_IMPLEMENTATION 2
PNG_ARM_NEON_IMPLEMENTATION  173 pngpriv.h      #        define PNG_ARM_NEON_IMPLEMENTATION 2
PNG_ARM_NEON_IMPLEMENTATION  179 pngpriv.h      #     define PNG_ARM_NEON_IMPLEMENTATION 1