mlib_VectorMulShift_U8_Mod

, mlib_VectorMulShift_U8_Sat

, mlib_VectorMulShift_U8C_Mod

, mlib_VectorMulShift_U8C_Sat

, mlib_VectorMulShift_S8_Mod

, mlib_VectorMulShift_S8_Sat

, mlib_VectorMulShift_S8C_Mod

, mlib_VectorMulShift_S8C_Sat

, mlib_VectorMulShift_S16_Mod

, mlib_VectorMulShift_S16_Sat

, mlib_VectorMulShift_S16C_Mod

, mlib_VectorMulShift_S16C_Sat

, mlib_VectorMulShift_S32_Mod

, mlib_VectorMulShift_S32_Sat

, mlib_VectorMulShift_S32C_Mod

, mlib_VectorMulShift_S32C_Sat

- vector multiplication with shifting, in place

Synopsis

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

mlib_status mlib_VectorMulShift_U8_Mod(mlib_u8 *xz, 
     const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_U8_Sat(mlib_u8 *xz, 
     const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_U8C_Mod(mlib_u8 *xz,
     const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_U8C_Sat(mlib_u8 *xz,
     const mlib_u8 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S8_Mod(mlib_s8 *xz, 
     const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S8_Sat(mlib_s8 *xz, 
     const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S8C_Mod(mlib_s8 *xz, 
     const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S8C_Sat(mlib_s8 *xz, 
     const mlib_s8 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S16_Mod(mlib_s16 *xz, 
     const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S16_Sat(mlib_s16 *xz, 
     const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S16C_Mod(mlib_s16 *xz,
     const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S16C_Sat(mlib_s16 *xz, 
     const mlib_s16 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S32_Mod(mlib_s32 *xz, 
     const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S32_Sat(mlib_s32 *xz, 
     const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S32C_Mod(mlib_s32 *xz, 
     const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

mlib_status mlib_VectorMulShift_S32C_Sat(mlib_s32 *xz, 
     const mlib_s32 *y, mlib_s32 n, mlib_s32 shift);

Description

Each of these functions performs an in-place multiplication of two vectors and shifts the result.

For real data, the following equation is used:

xz[i] = xz[i] * y[i] * 2**(-shift)

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

For complex data, the following equation is used:

tmp         = xz[2*i]
xz[2*i]     = (tmp*y[2*i] - xz[2*i + 1]*y[2*i + 1]) * 2**(-shift)
xz[2*i + 1] = (tmp*y[2*i + 1] + xz[2*i + 1]*y[2*i]) * 2**(-shift)

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

Parameters

Each of the functions takes the following arguments:

xz

Pointer to the first element of the first source and result vector.

y

Pointer to the first element of the second source vector.

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:

See Also

mlib_VectorMulShift_U8_U8_Mod(3MLIB), attributes(5)