mediaLib Library Functions     mlibImageDivConstShiftInp(3MLIB)



NAME
     mlibImageDivConstShiftInp - division by a  constant,  with
     shifting

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

     mlibstatus mlibImageDivConstShiftInp(mlibimage *srcdst,
          const mlibs32 *c, mlibs32 shift);


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


     It uses the following equation:

       srcdst[x][y][i] = srcdst[x][y][i] / c[i] * 2**shift



     In the case of c[i] = 0,

       srcdst[x][y][i] = 0              if srcdst[x][y][i] = 0
       srcdst[x][y][i] = DATATYPEMAX  if srcdst[x][y][i] > 0
       srcdst[x][y][i] = DATATYPEMIN  if srcdst[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:

     srcdst    Pointer to source and destination 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.


RETURN VALUES




SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions     mlibImageDivConstShiftInp(3MLIB)



     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
     mlibImageDivConstShift(3MLIB), attributes(5)



































SunOS 5.11           Last change: 2 Mar 2007                    2