Content-type: text/html Man page of mlib_VectorMulSShift_U8_U8_Mod

mlib_VectorMulSShift_U8_U8_Mod

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
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NAME

mlib_VectorMulSShift_U8_U8_Mod, mlib_VectorMulSShift_U8_U8_Sat, mlib_VectorMulSShift_U8C_U8C_Mod, mlib_VectorMulSShift_U8C_U8C_Sat, mlib_VectorMulSShift_S8_S8_Mod, mlib_VectorMulSShift_S8_S8_Sat, mlib_VectorMulSShift_S8C_S8C_Mod, mlib_VectorMulSShift_S8C_S8C_Sat, mlib_VectorMulSShift_S16_S16_Mod, mlib_VectorMulSShift_S16_S16_Sat, mlib_VectorMulSShift_S16C_S16C_Mod, mlib_VectorMulSShift_S16C_S16C_Sat, mlib_VectorMulSShift_S32_S32_Mod, mlib_VectorMulSShift_S32_S32_Sat, mlib_VectorMulSShift_S32C_S32C_Mod, mlib_VectorMulSShift_S32C_S32C_Sat - vector multiplication by scalar plus shifting  

SYNOPSIS

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

mlib_status mlib_VectorMulSShift_U8_U8_Mod(mlib_u8 *z, 
    const mlib_u8 *x, const mlib_u8 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_U8_U8_Sat(mlib_u8 *z, 
    const mlib_u8 *x, const mlib_u8 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_U8C_U8C_Mod(mlib_u8 *z,
    const mlib_u8 *x, const mlib_u8 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_U8C_U8C_Sat(mlib_u8 *z,
    const mlib_u8 *x, const mlib_u8 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S8_S8_Mod(mlib_s8 *z,
    const mlib_s8 *x, const mlib_s8 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S8_S8_Sat(mlib_s8 *z, 
    const mlib_s8 *x,const mlib_s8 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S8C_S8C_Mod(mlib_s8 *z,
    const mlib_s8 *x, const mlib_s8 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S8C_S8C_Sat(mlib_s8 *z,
    const mlib_s8 *x, const mlib_s8 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S16_S16_Mod(mlib_s16 *z, 
    const mlib_s16 *x, const mlib_s16 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S16_S16_Sat(mlib_s16 *z, 
    const mlib_s16 *x, const mlib_s16 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S16C_S16C_Mod(mlib_s16 *z, 
    const mlib_s16 *x, const mlib_s16 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S16C_S16C_Sat(mlib_s16 *z, 
    const mlib_s16 *x, const mlib_s16 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S32_S32_Mod(mlib_s32 *z, 
    const mlib_s32 *x, const mlib_s32 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S32_S32_Sat(mlib_s32 *z, 
    const mlib_s32 *x, const mlib_s32 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S32C_S32C_Mod(mlib_s32 *z, 
    const mlib_s32 *x, const mlib_s32 *c, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulSShift_S32C_S32C_Sat(mlib_s32 *z,
    const mlib_s32 *x, const mlib_s32 *c, mlib_s32 n, mlib_s32 shift);

 

DESCRIPTION

Each of these functions performs a multiplication of a vector by a scalar and shifts the result.

For real data, the following equation is used:

z[i] = x[i] * c[0] * 2**(-shift)

where i = 0, 1, ..., (n - 1).

For complex data, the following equation is used:

z[2*i]     = (x[2*i]*c[0] - x[2*i + 1]*c[1]) * 2**(-shift)
z[2*i + 1] = (x[2*i]*c[1] + x[2*i + 1]*c[0]) * 2**(-shift)

where i = 0, 1, ..., (n - 1).  

PARAMETERS

Each of the functions takes the following arguments:

z

Pointer to the first element of the result vector.

x

Pointer to the first element of the source vector.

c

Pointer to the source scalar. When the function is used with complex data types, c[0] contains the real part of the scalar, and c[1] contains the imaginary part of the scalar.

n

Number of elements in each vector.

shift

Right shifting factor. The ranges of valid shift are:

1 ≤ shift ≤ 8   for U8, S8, U8C, S8C types
1 ≤ shift ≤ 16  for S16, S16C types
1 ≤ shift ≤ 31  for S32, S32C types

 

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_VectorMulSShift_U8_Mod(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:04 GMT, October 02, 2010