05-20-2011
sa+=($2<0)?-$2:$2
could also be
sa+=sqrt($2^2)
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LEARN ABOUT OPENSOLARIS
mlib_vectorsumabs_s32_sat
mlib_VectorSumAbs_U8_Sat(3MLIB) mediaLib Library Functions mlib_VectorSumAbs_U8_Sat(3MLIB)
NAME
mlib_VectorSumAbs_U8_Sat, mlib_VectorSumAbs_S8_Sat, mlib_VectorSumAbs_S16_Sat, mlib_VectorSumAbs_S32_Sat - sum of the absolute values of a
vector
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_VectorSumAbs_U8_Sat(mlib_d64 *z, const mlib_u8 *x,
mlib_s32 n);
mlib_status mlib_VectorSumAbs_S8_Sat(mlib_d64 *z, const mlib_s8 *x,
mlib_s32 n);
mlib_status mlib_VectorSumAbs_S16_Sat(mlib_d64 *z, const mlib_s16 *x,
mlib_s32 n);
mlib_status mlib_VectorSumAbs_S32_Sat(mlib_d64 *z, const mlib_s32 *x,
mlib_s32 n);
DESCRIPTION
Each of these functions computes the sum of the absolute values of a vector.
The following equation is used:
n-1
z[0] = SUM |x[i]|
i=0
PARAMETERS
Each of the functions takes the following arguments:
z Pointer to the sum of the absolute values of the vector.
x Pointer to the first element of the first source vector.
n Number of elements in the vectors.
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)
SunOS 5.11 2 Mar 2007 mlib_VectorSumAbs_U8_Sat(3MLIB)