Constants?

[fdncred]

Are there plans to add constants such as these found in Leptonica's pix.h?

#define   PIX_SRC      (0xc)                      /*!< use source pixels      */
#define   PIX_DST      (0xa)                      /*!< use destination pixels */
#define   PIX_NOT(op)  ((op) ^ 0x0f)              /*!< invert operation %op   */
#define   PIX_CLR      (0x0)                      /*!< clear pixels           */
#define   PIX_SET      (0xf)                      /*!< set pixels             */

#define   PIX_PAINT    (PIX_SRC | PIX_DST)        /*!< paint = src | dst      */
#define   PIX_MASK     (PIX_SRC & PIX_DST)        /*!< mask = src & dst       */
#define   PIX_SUBTRACT (PIX_DST & PIX_NOT(PIX_SRC)) /*!< subtract =           */
                                                    /*!<    src & !dst        */
#define   PIX_XOR      (PIX_SRC ^ PIX_DST)        /*!< xor = src ^ dst        */

static const l_int32  L_RED_SHIFT =
       8 * (sizeof(l_uint32) - 1 - COLOR_RED);           /* 24 */
static const l_int32  L_GREEN_SHIFT =
       8 * (sizeof(l_uint32) - 1 - COLOR_GREEN);         /* 16 */
static const l_int32  L_BLUE_SHIFT =
       8 * (sizeof(l_uint32) - 1 - COLOR_BLUE);          /*  8 */
static const l_int32  L_ALPHA_SHIFT =
       8 * (sizeof(l_uint32) - 1 - L_ALPHA_CHANNEL);     /*  0 */

static const l_float32 L_RED_WEIGHT =   0.3f; /*!< Percept. weight for red   */
static const l_float32 L_GREEN_WEIGHT = 0.5f; /*!< Percept. weight for green */
static const l_float32 L_BLUE_WEIGHT =  0.2f; /*!< Percept. weight for blue  */

[kaby76]

Yes, but it may be a while. There was someone who may have PP definitions into Clang ASTs, at least mentioned it. Will look into this.