PRNGenRDRAND_BN
PRNGenRDRAND_BN
Generates a pseudorandom positive Big Number of the specified bit length using the RDRAND instruction.
Syntax
IppStatus ippsPRNGenRDRAND_BN(IppsBigNumState*
pRand
, int
nBits
, void*
pCtx
);
Include Files
ippcp.h
Parameters
- pRand
- Pointer to the output pseudorandom Big Number.
- nBits
- The number of generated pseudorandom bits.
- pCtx
- Pointer to theIppsPRNGStatecontext. This pointer is unused and can beNULL.
Description
The function generates a pseudorandom positive Big Number of the specified
nBits
length. The generation is based on the RDRAND instruction available on latest Intel® processors [INTEL_ARCH]. Optimization Notice
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Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.
Notice revision #20110804
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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 isNULL.
- ippStsContextMatchErr
- Indicates an error condition if the context parameter does not match the operation.
- ippStsLengthErr
- Indicates an error condition ifnBitsis less than 1.
- ippStsNotSupportedModeErr
- Indicates an error condition if the RDRAND instruction is not available on the target processor.