Content-type: text/html Man page of mlib_MatrixTranspose_U8

mlib_MatrixTranspose_U8

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
Index Return to Main Contents
 

NAME

mlib_MatrixTranspose_U8, mlib_MatrixTranspose_U8C, mlib_MatrixTranspose_S8, mlib_MatrixTranspose_S8C, mlib_MatrixTranspose_S16, mlib_MatrixTranspose_S16C, mlib_MatrixTranspose_S32, mlib_MatrixTranspose_S32C - matrix transpose, in place  

SYNOPSIS

cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>

mlib_status mlib_MatrixTranspose_U8(mlib_u8 *xz, mlib_s32 mn);

mlib_status mlib_MatrixTranspose_U8C(mlib_u8 *xz, mlib_s32 mn);

mlib_status mlib_MatrixTranspose_S8(mlib_s8 *xz, mlib_s32 mn);

mlib_status mlib_MatrixTranspose_S8C(mlib_s8 *xz, mlib_s32 mn);

mlib_status mlib_MatrixTranspose_S16(mlib_s16 *xz, mlib_s32 mn);

mlib_status mlib_MatrixTranspose_S16C(mlib_s16 *xz, mlib_s32 mn);

mlib_status mlib_MatrixTranspose_S32(mlib_s32 *xz, mlib_s32 mn);

mlib_status mlib_MatrixTranspose_S32C(mlib_s32 *xz, mlib_s32 mn);

 

DESCRIPTION

Each of these functions performs an in-place transpose of a square matrix.

For real data, the following pseudo code applies:

for (i = 1; i < mn; i++) {
   for (j = 0; j < i; i++) {
       tmp          = xz[i*mn + j];
       xz[i*mn + j] = xz[j*mn + i];
       xz[j*mn + i] = tmp;
   }
}

For complex data, the following pseudo code applies:

for (i = 1; i < mn; i++) {
   for (j = 0; j < i; i++) {
       tmp0                 = xz[2*(i*mn + j)];
       tmp1                 = xz[2*(i*mn + j) + 1];
       xz[2*(i*mn + j)]     = xz[2*(j*mn + i)];
       xz[2*(i*mn + j) + 1] = xz[2*(j*mn + i) + 1];
       xz[2*(j*mn + i)]     = tmp0;
       xz[2*(j*mn + i) + 1] = tmp1;
   }
}

 

PARAMETERS

Each of the functions takes the following arguments:

xz

Pointer to the source and destination matrix.

mn

Number of rows and columns in the matrix.

 

RETURN VALUES

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

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

mlib_MatrixTranspose_U8(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:37:56 GMT, October 02, 2010