man pages section 3: Multimedia Library Functions

Exit Print View

Updated: July 2014
 
 

mlib_VectorAng_S8C (3MLIB)

Name

mlib_VectorAng_U8C, mlib_VectorAng_S8C, mlib_VectorAng_S16C, mlib_VectorAng_S32C - vector complex phase (angle)

Synopsis

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

mlib_status mlib_VectorAng_U8C(mlib_d64 *a, 
     const mlib_u8 *x, mlib_s32 n);
mlib_status mlib_VectorAng_S8C(mlib_d64 *a, 
     const mlib_s8 *x, mlib_s32 n);
mlib_status mlib_VectorAng_S16C(mlib_d64 *a, 
     const mlib_s16 *x, mlib_s32 n);
mlib_status mlib_VectorAng_S32C(mlib_d64 *a, 
     const mlib_s32 *x, mlib_s32 n);

Description

Each of these functions computes the phase vector of a complex vector.

The following equation is used:

a[i] = atan(x[2*i + 1] / x[2*i])

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

Parameters

Each of the functions takes the following arguments:

a

Pointer to the destination phase vector.

x

Pointer to the source vector

n

Number of elements in the vector.

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 also

attributes(5)