Manual Pages for UNIX Operating System command usage for man mlib_MatrixMulShift_S16_S16_Sat

mediaLib Library Functions
                           mlib_MatrixMulShift_S16_S16_Mod(3MLIB)



NAME
     mlib_MatrixMulShift_S16_S16_Mod,
     mlib_MatrixMulShift_S16_S16_Sat,
     mlib_MatrixMulShift_S16C_S16C_Mod,
     mlib_MatrixMulShift_S16C_S16C_Sat  -  matrix  multiplication
     plus shifting

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

     mlib_status mlib_MatrixMulShift_S16_S16_Mod(mlib_s16 *z,
         const mlib_s16 *x, const mlib_s16 *y, mlib_s32 m,
         mlib_s32 l, mlib_s32 n, mlib_s32 shift);


     mlib_status mlib_MatrixMulShift_S16_S16_Sat(mlib_s16 *z,
          const mlib_s16 *x, const mlib_s16 *y, mlib_s32 m,
          mlib_s32 l, mlib_s32 n, mlib_s32 shift);


     mlib_status mlib_MatrixMulShift_S16C_S16C_Mod(mlib_s16 *z,
          const mlib_s16 *x, const mlib_s16 *y, mlib_s32 m,
          mlib_s32 l, mlib_s32 n, mlib_s32 shift);


     mlib_status mlib_MatrixMulShift_S16C_S16C_Sat(mlib_s16 *z,
          const mlib_s16 *x, const mlib_s16 *y, mlib_s32 m,
          mlib_s32 l, mlib_s32 n, mlib_s32 shift);


DESCRIPTION
     Each of these functions performs  a  multiplication  of  two
     matrices and shifts the result.


     For real data, the following equation is used:

                     l-1
       z[i*n + j] = {SUM (x[i*l + k] * y[k*n + j])} * 2**(-shift)
                     k=0



     where i = 0, 1, ..., (m - 1); j = 0, 1, ..., (n - 1).


     For complex data, the following equation is used:

                             l-1
       z[2*(i*n + j)]     = {SUM (xR*yR - xI*yI)} * 2**(-shift)



SunOS 5.11           Last change: 2 Mar 2007                    1






mediaLib Library Functions
                           mlib_MatrixMulShift_S16_S16_Mod(3MLIB)



                             k=0

                             l-1
       z[2*(i*n + j) + 1] = {SUM (xR*yI + xI*yR)} * 2**(-shift)
                             k=0



     where

       xR = x[2*(i*l + k)]
       xI = x[2*(i*l + k) + 1]
       yR = y[2*(k*n + j)]
       yI = y[2*(k*n + j) + 1]
       i = 0, 1, ..., (m - 1)
       j = 0, 1, ..., (n - 1)


PARAMETERS
     Each of the functions takes the following arguments:

     z        Pointer to the first element of the result  matrix,
              in row major order.


     x        Pointer to the first element of the  first  matrix,
              in row major order.


     y        Pointer to the first element of the second  matrix,
              in row major order.


     m        Number of rows in the first matrix. m > 0.


     l        Number of columns in  the  first  matrix,  and  the
              number of rows in the second matrix. l > 0.


     n        Number of columns in the second matrix. n > 0.


     shift    Right shifting factor. 1 < shift < 16.


RETURN VALUES
     Each of the functions returns  MLIB_SUCCESS  if  successful.
     Otherwise it returns MLIB_FAILURE.





SunOS 5.11           Last change: 2 Mar 2007                    2






mediaLib Library Functions
                           mlib_MatrixMulShift_S16_S16_Mod(3MLIB)



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



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     mlib_MatrixMul_U8_U8_Mod(3MLIB), attributes(5)





































SunOS 5.11           Last change: 2 Mar 2007                    3






mediaLib Library Functions
                           mlib_MatrixMulShift_S16_S16_Mod(3MLIB)






















































SunOS 5.11           Last change: 2 Mar 2007                    4