'\" te
.\" Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved 
.TH mlib_VectorAve_U8 3MLIB "23 May 2007" "SunOS 5.11" "mediaLib Library Functions"
.SH NAME
mlib_VectorAve_U8, mlib_VectorAve_U8C, mlib_VectorAve_S8, mlib_VectorAve_S8C, mlib_VectorAve_S16, mlib_VectorAve_S16C, mlib_VectorAve_S32, mlib_VectorAve_S32C \- vector average, in place
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR... ] \fIfile\fR... \fB-lmlib\fR [ \fIlibrary\fR... ]
#include <mlib.h>

\fBmlib_status\fR \fBmlib_VectorAve_U8\fR(\fBmlib_u8 *\fR\fIxz\fR, 
     \fBconst mlib_u8 *\fR\fIy\fR, \fBmlib_s32\fR \fIn\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_VectorAve_U8C\fR(\fBmlib_u8 *\fR\fIxz\fR, 
     \fBconst mlib_u8 *\fR\fIy\fR, \fBmlib_s32\fR \fIn\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_VectorAve_S8\fR(\fBmlib_s8 *\fR\fIxz\fR, 
     \fBconst mlib_s8 *\fR\fIy\fR, \fBmlib_s32\fR \fIn\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_VectorAve_S8C\fR(\fBmlib_s8 *\fR\fIxz\fR, 
     \fBconst mlib_s8 *\fR\fIy\fR, \fBmlib_s32\fR \fIn\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_VectorAve_S16\fR(\fBmlib_s16 *\fR\fIxz\fR, 
     \fBconst mlib_s16 *\fR\fIy\fR, \fBmlib_s32\fR \fIn\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_VectorAve_S16C\fR(\fBmlib_s16 *\fR\fIxz\fR, 
     \fBconst mlib_s16 *\fR\fIy\fR, \fBmlib_s32\fR \fIn\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_VectorAve_S32\fR(\fBmlib_s32 *\fR\fIxz\fR, 
     \fBconst mlib_s32 *\fR\fIy\fR, \fBmlib_s32\fR \fIn\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_VectorAve_S32C\fR(\fBmlib_s32 *\fR\fIxz\fR, 
     \fBconst mlib_s32 *\fR\fIy\fR, \fBmlib_s32\fR \fIn\fR);
.fi

.SH DESCRIPTION
.sp
.LP
Each of these functions performs an in-place averaging of two vectors.
.sp
.LP
It uses the following equation:
.sp
.in +2
.nf
xz[i] = (xz[i] + y[i] + 1) / 2
.fi
.in -2

.sp
.LP
where \fBi = 0, 1, ..., (n - 1)\fR for real data; \fBi = 0, 1, ..., (2*n - 1)\fR for complex data.
.SH PARAMETERS
.sp
.LP
Each of the functions takes the following arguments:
.sp
.ne 2
.mk
.na
\fB\fIxz\fR\fR
.ad
.RS 6n
.rt  
Pointer to the first element of the first source and destination vector.
.RE

.sp
.ne 2
.mk
.na
\fB\fIy\fR\fR
.ad
.RS 6n
.rt  
Pointer to the first element of the second source vector.
.RE

.sp
.ne 2
.mk
.na
\fB\fIn\fR\fR
.ad
.RS 6n
.rt  
Number of elements in the vectors.
.RE

.SH RETURN VALUES
.sp
.LP
Each of the functions returns \fBMLIB_SUCCESS\fR if successful. Otherwise it returns \fBMLIB_FAILURE\fR.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityCommitted
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBmlib_VectorAve_U8_U8\fR(3MLIB), \fBattributes\fR(5)