GFpSub_PE¶
Subtracts an element of the finite field from an element of its parent field.
Syntax¶
IppStatus ippsGFpSub_PE(const IppsGFpElement* pA, const IppsGFpElement* pParentB, IppsGFpElement* pR, IppsGFpState* pGFp);
Include Files¶
ippcp.h
Parameters¶
pA |
Pointer to the context of the minuend, an element of the finite field. |
pParentB |
Pointer to the context of the subtrahend, an element of the parent 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 specified by the context pGFp and its ground finite 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. |
ippStsContextMatchErr |
Indicates an error condition if any of IppsGFpState and IppsGFpElement context parameters does not match the operation. |
ippStsOutOfRangeErr |
Indicates an error condition in the following cases:
|
ippStsBadArgErr |
Indicates an error condition if the context pGFp does not specify a prime field. |