Cryptography for Intel® Integrated Performance Primitives Developer Reference

Developer Reference

Contents

Gcd_BN

Computes greatest common divisor.

Syntax

IppStatus ippsGcd_BN(IppsBigNumState*
pA
, IppsBigNumState*
pB
, IppsBigNumState*
pGCD
);
Include Files
ippcp.h
Parameters
pA
Pointer to the first integer big number of
IppsBigNumState
.
pB
Pointer to the second integer big number of
IppsBigNumState
.
pCGD
Pointer to the greatest common divisor to
pA
 and
pB
.
Description
The function computes the greatest common divisor (GCD) for two positive integer big numbers.
The following pseudocode represents this function:
pCGD
←
gcd
 (
pA
 ,
pB
).
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
.
ippStsOutOfRangeErr
Indicates an error condition if
IppsBigNumState
*pCGD
 is smaller than the length of
IppsBigNumState
*pA
 or
IppsBigNumState
*pB
.
ippStsContextMatchErr
Indicates an error condition if any of the context parameters does not match the operation.
The size of
IppsBigNumState *
pCGD
 should not be less than either the length of
IppsBigNumState *
pA
 and
IppsBigNumState *
pB
.

Product and Performance Information

1

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