IDESCALE          157 3rdparty/libjpeg/jidctfst.c #define IDESCALE(x,n)  ((int) IRIGHT_SHIFT((x) + (1 << ((n)-1)), n))
IDESCALE          159 3rdparty/libjpeg/jidctfst.c #define IDESCALE(x,n)  ((int) IRIGHT_SHIFT(x, n))