mlib_VectorMulMShift_S16_SmediaLibMLibrmlib_VectorMulMShift_S16_S16_Mod(3MLIB)NAME
mlib_VectorMulMShift_S16_S16_Mod, mlib_VectorMulMShift_S16_S16_Sat,
mlib_VectorMulMShift_S16C_S16C_Mod, mlib_VectorMulMShift_S16C_S16C_Sat
- multiplication of vector by matrix with shifting
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VectorMulMShift_S16_S16_Mod(mlib_s16 *z,
const mlib_s16 *x, const mlib_s16 *y, mlib_s32 m,
mlib_s32 n, mlib_s32 shift);
mlib_status mlib_VectorMulMShift_S16_S16_Sat(mlib_s16 *z,
const mlib_s16 *x, const mlib_s16 *y, mlib_s32 m,
mlib_s32 n, mlib_s32 shift);
mlib_status mlib_VectorMulMShift_S16C_S16C_Mod(mlib_s16 *z,
const mlib_s16 *x, const mlib_s16 *y, mlib_s32 m,
mlib_s32 n, mlib_s32 shift);
mlib_status mlib_VectorMulMShift_S16C_S16C_Sat(mlib_s16 *z,
const mlib_s16 *x, const mlib_s16 *y, mlib_s32 m,
mlib_s32 n, mlib_s32 shift);
DESCRIPTION
Each of these functions multiplies a vector by a matrix and shifts the
results.
For real data, the following equation is used:
m-1
z[i] = { SUM (x[j] * y[j*m + i]) } * 2**(-shift)
j=0
where i = 0, 1, ..., (n - 1).
For complex data, the following equation is used:
m-1
z[2*i ] = { SUM (xR*yR - xI*yI) } * 2**(-shift)
j=0
m-1
z[2*i + 1] = { SUM (xR*yI + xI*yR) } * 2**(-shift)
j=0
where i = 0, 1, ..., (n - 1), and
xR = x[2*j]
xI = x[2*j + 1]
yR = y[2*(j*m + i)]
yI = y[2*(j*m + i) + 1]
PARAMETERS
Each of the functions takes the following arguments:
z Pointer to the first element of the destination vector.
x Pointer to the first element of the source vector.
y Pointer to the first element of the source matrix.
m Number of rows in the matrix, and number of elements in the
source vector.
n Number of columns in the matrix, and number of elements in the
destination vector.
shift Right shifting factor.
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 TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Committed │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOmlib_VectorMulM_U8_U8_Mod(3MLIB), attributes(5)SunOS 5.10 2 Marmlib_VectorMulMShift_S16_S16_Mod(3MLIB)
