mediaLib Library Functions         mlibImageDivConstShift(3MLIB)



NAME
     mlibImageDivConstShift  -  division  by  a  constant,  with
     shifting

SYNOPSIS
     cc [ flag... ] file... -lmlib [ library... ]
     #include 

     mlibstatus mlibImageDivConstShift(mlibimage *dst, const mlibimage *src,
          const mlibs32 *c, mlibs32 shift);


DESCRIPTION
     The mlibImageDivConstShift() function divides each pixel in
     an  image  by a constant value on a pixel-by-pixel basis. It
     scales the result by a left shift and writes the  result  to
     the destination image on a pixel-by-pixel basis.


     It uses the following equation:

       dst[x][y][i] = src[x][y][i] / c[i] * 2**shift



     In the case of c[i] = 0,

       dst[x][y][i] = 0              if src[x][y][i] = 0
       dst[x][y][i] = DATATYPEMAX  if src[x][y][i] > 0
       dst[x][y][i] = DATATYPEMIN  if src[x][y][i] < 0



     where DATATYPE is MLIBU8, MLIBS16, MLIBU16, or  MLIBS32
     for  an image of type MLIBYTE, MLIBSHORT, MLIBUSHORT, or
     MLIBINT, respectively.

PARAMETERS
     The function takes the following arguments:

     dst      Pointer to destination image.


     src      Pointer to source image.


     c        Constant by which each pixel is divided. c[i]  con-
              tains the constant for channel i.


     shift    Left shifting factor. 0 < shift < 31.




SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions         mlibImageDivConstShift(3MLIB)



RETURN VALUES
     The function returns MLIBSUCES if  successful.  Otherwise
     it returns MLIBFAILURE.

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface Stability          Committed                   
    
     MT-Level                     MT-Safe                     
    


SEE ALSO
     mlibImageDivConstShiftInp(3MLIB), attributes(5)


































SunOS 5.11           Last change: 2 Mar 2007                    2