Cryptography for Intel(R) Integrated Performance Primitives Developer Reference

ID 768738
Date 12/16/2022
Public
Document Table of Contents

GFpSub

Subtracts two elements of the finite field.

Syntax

IppStatus ippsGFpSub(const IppsGFpElement* pA, const IppsGFpElement* pB, IppsGFpElement* pR, IppsGFpState* pGFp);

Include Files

ippcp.h

Parameters

pA

Pointer to the context of the minuend element of the finite field.

pB

Pointer to the context of the subtrahend element of the finite field.

pR

Pointer to the context of the resulting element of the finite field.

pGFp

Pointer to the context of the finite field.
Description

This function computes the difference of the elements of the finite field. The following pseudocode represents this operation: R = A - B. The finite field is specified by the context pGFp.

Return Values

ippStsNoErr

Indicates no error. Any other value indicates an error or warning.

ippStsNullPtrErr

Indicates an error condition if any of the specified pointers is NULL.

ippStsContextMatchErr

Indicates an error condition if any of the IppsGFpState and IppsGFpElement context parameters does not match the operation.

ippStsOutOfRangeErr

Indicates an error condition if pA or pB does not belong to the finite field specified by the context pGFp.

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