Intel® Integrated Performance Primitives Developer Reference

Developer Reference

  • 2021
  • 01/15/2021
  • Public Content
Contents

ZeroCrossing

Computes specific zero crossing measure.

Syntax

IppStatus ippsZeroCrossing_16s32f(const Ipp16s*
pSrc
, Ipp32u
len
, Ipp32f*
pValZCR
, IppsZCType
zcType
);
IppStatus ippsZeroCrossing_32f(const Ipp32f*
pSrc
, Ipp32u
len
, Ipp32f*
pValZCR
, IppsZCType
zcType
);
Include Files
ipps.h
Domain Dependencies
Headers:
ippcore.h
,
ippvm.h
Libraries:
ippcore.lib
,
ippvm.lib
Parameters
pSrc
Pointer to the source vector.
len
Number of elements in the vector.
pValZCR
Pointer to the output value of the zero crossing measure.
zcType
Type of the zero crossing measure, possible values are
ippsZCR
,
ippsZCXor
 or
ippsZCC
.
Description
This function computes specific zero crossing measure according to the parameter
zcType
. The result of zero crossing measurement is stored in
pValZCR
. The calculations are performed in accordance with the formulas below.
If
zcType
= ippZCR
, the function uses the following formula:
If
zcType
= ippZCXor
, the function uses the following formula:
If
zcType
= ippZCC
, the function uses the following formula:
Return Values
ippStsNoErr
Indicates no error.
ippStsNullPtrErr
Indicates an error when the
pSrc
 or
pValZCR
 pointer is
NULL
.
ippStsRangeErr
Indicates an error when
zcType
 has an invalid value.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.