GFPXSub

Subtracts one element of the GF(p^d) field from another.

Syntax

IppStatus ippsGFPXSub(const IppsGFPXElement *pGFpxElementA, const IppsGFPXElement *pGFpxElementB, IppsGFPXElement *pGFpxElementR, IppsGFPXState *pGFpx);

Parameters

pGFpxElementA	Pointer to the context of the minuend element of the GF(`p^d`) field.
pGFpxElementB	Pointer to the context of the subtrahend element of the GF(`p^d`) field.
pGFpxElementR	Pointer to the context of the resulting element of the GF(`p^d`) field.
pGFpx	Pointer to the context of the GF(`p^d`) field.

Description

This function is declared in the ippcp.h file. The function computes the difference of the two elements of the GF(p^d) field. The following pseudocode represents this operation: R = A - B.

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.
ippContextMatchErr	Indicates an error condition if any of the IppsGFPXState or IppsGFPXElement context parameters does not match the operation.