Developer Reference

  • 2020
  • 10/21/2020
  • Public Content
Contents

SubC

Subtracts a constant value from each element of a vector.

Syntax

Case 1. Not-in-place operations on floating point data.
IppStatus ippsSubC_32f(const Ipp32f*
pSrc
, Ipp32f
val
, Ipp32f*
pDst
, int
len
);
IppStatus ippsSubC_32fc(const Ipp32fc*
pSrc
, Ipp32fc
val
, Ipp32fc*
pDst
, int
len
);
IppStatus ippsSubC_64f(const Ipp64f*
pSrc
, Ipp64f
val
, Ipp64f*
pDst
, int
len
);
IppStatus ippsSubC_64fc(const Ipp64fc*
pSrc
, Ipp64fc
val
, Ipp64fc*
pDst
, int
len
);
Case 2. Not-in-place operations on integer data.
IppStatus ippsSubC_8u_Sfs(const Ipp8u*
pSrc
, Ipp8u
val
, Ipp8u*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_16u_Sfs(const Ipp16u*
pSrc
, Ipp16u
val
, Ipp16u*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_16s_Sfs(const Ipp16s*
pSrc
, Ipp16s
val
, Ipp16s*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_32s_Sfs(const Ipp32s*
pSrc
, Ipp32s
val
, Ipp32s*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_16sc_Sfs(const Ipp16sc*
pSrc
, Ipp16sc
val
, Ipp16sc*
pDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_32sc_Sfs(const Ipp32sc*
pSrc
, Ipp32sc
val
, Ipp32sc*
pDst
, int
len
, int
scaleFactor
);
Case 3. In-place operations on floating point data.
IppStatus ippsSubC_16s_I(Ipp16s
val
, Ipp16s*
pSrcDst
, int
len
);
IppStatus ippsSubC_32f_I(Ipp32f
val
, Ipp32f*
pSrcDst
, int
len
);
IppStatus ippsSubC_64f_I(Ipp64f
val
, Ipp64f*
pSrcDst
, int
len
);
IppStatus ippsSubC_32fc_I(Ipp32fc
val
, Ipp32fc*
pSrcDst
, int
len
);
IppStatus ippsSubC_64fc_I(Ipp64fc
val
, Ipp64fc*
pSrcDst
, int
len
);
Case 4. In-place operations on integer data.
IppStatus ippsSubC_8u_ISfs(Ipp8u
val
, Ipp8u*
pSrcDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_16u_ISfs(Ipp16u
val
, Ipp16u*
pSrcDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_16s_ISfs(Ipp16s
val
, Ipp16s*
pSrcDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_32s_ISfs(Ipp32s
val
, Ipp32s*
pSrcDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_16sc_ISfs(Ipp16sc
val
, Ipp16sc*
pSrcDst
, int
len
, int
scaleFactor
);
IppStatus ippsSubC_32sc_ISfs(Ipp32sc
val
, Ipp32sc*
pSrcDst
, int
len
, int
scaleFactor
);
Include Files
ipps.h
Domain Dependencies
Headers:
ippcore.h
,
ippvm.h
Libraries:
ippcore.lib
,
ippvm.lib
Parameters
pSrc
Pointer to the source vector.
val
Scalar value used to decrement each element of the source vector.
pDst
Pointer to the destination vector.
pSrcDst
Pointer to the source and destination vector for in-place operation.
len
Number of elements in the vector
scaleFactor
Scale factor, refer to Integer Scaling.
Description
This function subtracts a value
val
from each element of the vector
pSrc
, and stores the result in
pDst
.
The in-place flavors of
ippsSubC
subtract a value
val
from each element of the vector
pSrcDst
and store the result in
pSrcDst
.
Functions with
Sfs
suffixes perform scaling of the result value in accordance with the
scaleFactor
value. If the output value exceeds the data range, the result becomes saturated.
Return Values
ippStsNoErr
Indicates no error.
ippStsNullPtrErr
Indicates an error when the
pSrc
,
pDst
, or
pSrcDst
pointer is
NULL
.
ippStsSizeErr
Indicates an error when
len
is less than or equal to 0.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804