PNG_U32            95 contrib/libtests/pngunknown.c #define PNG_U32(b1, b2, b3, b4)\
PNG_U32           105 contrib/tools/pngfix.c #define PNG_U32(b1,b2,b3,b4) \
PNG_U32           726 pngpriv.h      #define PNG_U32(b1,b2,b3,b4) \