Developer Reference

  • 2020
  • 07/15/2020
  • Public Content
Contents

GetCpuFreqMhz

Estimates the processor operating frequency.

Syntax

IppStatus ippGetCpuFreqMhz(int*
pMhz
);
Include Files
ippcore.h
Parameters
pMhz
Pointer to the result.
Description
This function estimates the processor operating frequency and returns its value, in MHz as an integer stored in
pMhz
. The estimated value can vary depending on the processor workload.
To improve precision of the return value, this function accumulates CPU clocks. This operation takes several seconds and may result in long execution time.
Return Values
ippStsNoErr
Indicates no error.
ippStsNullPtrErr
Indicates an error condition when the
pMhz
pointer is
NULL
.

Product and Performance Information

1

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