Intel® Integrated Performance Primitives Developer Guide and Reference

ID 790148
Date 11/07/2023
Public

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Document Table of Contents

IIRGetDlyLine

Retrieves the delay line contents from the IIR filter state.

Syntax

IppStatus ippsIIRGetDlyLine32f_16s(const IppsIIRState32f_16s* pState, Ipp32f* pDlyLine);

IppStatus ippsIIRGetDlyLine64f_16s(const IppsIIRState64f_16s* pState, Ipp64f* pDlyLine);

IppStatus ippsIIRGetDlyLine64f_32s(const IppsIIRState64f_32s* pState, Ipp64f* pDlyLine);

IppStatus ippsIIRGetDlyLine32fc_16sc(const IppsIIRState32fc_16sc* pState, Ipp32fc* pDlyLine);

IppStatus ippsIIRGetDlyLine64fc_16sc(const IppsIIRState64fc_16sc* pState, Ipp64fc* pDlyLine);

IppStatus ippsIIRGetDlyLine64fc_32sc(const IppsIIRState64fc_32sc* pState, Ipp64fc* pDlyLine);

IppStatus ippsIIRGetDlyLine_32f(const IppsIIRState_32f* pState, Ipp32f* pDlyLine);

IppStatus ippsIIRGetDlyLine64f_32f(const IppsIIRState64f_32f* pState, Ipp64f* pDlyLine);

IppStatus ippsIIRGetDlyLine_64f(const IppsIIRState_64f* pState, Ipp64f* pDlyLine);

IppStatus ippsIIRGetDlyLine_32fc(const IppsIIRState_32fc* pState, Ipp32fc* pDlyLine);

IppStatus ippsIIRGetDlyLine64fc_32fc(const IppsIIRState64fc_32fc* pState, Ipp64fc* pDlyLine);

IppStatus ippsIIRGetDlyLine_64fc(const IppsIIRState_64fc* pState, Ipp64fc* pDlyLine);

IppStatus ippsIIRGetDlyLine64f_DF1_32s(const IppsIIRState64f_32s* pState, Ipp32s* pDlyLine);

Include Files

ipps.h

Domain Dependencies

Headers: ippcore.h, ippvm.h

Libraries: ippcore.lib, ippvm.lib

Parameters

pState

Pointer to the IIR filter state structure.

pDlyLine

Pointer to the array containing the delay line values. The number of elements in the array is order for arbitrary filters and 2*numBq for BQ filters.

Description

This function copies the delay line values from the corresponding state structure pState and stores them into the pDlyLine array. If the pointer is NULL, then the delay line values in the state structure are initialized to zero.

The corresponding filter state must be initialized beforehand by one of the initialization functions.

Return Values

ippStsNoErr

Indicates no error.

ippStsNullPtrErr

Indicates an error when the pState pointer is NULL.

ippStsContextMatchErr

Indicates an error when the state identifier is incorrect.