Developer Reference for Intel® oneAPI Math Kernel Library for C

ID 766684
Date 3/22/2024
Public

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Document Table of Contents

mkl_get_clocks_frequency

Returns the frequency value in GHz based on constant-rate Time Stamp Counter.

Syntax

double mkl_get_clocks_frequency (void);

Include Files

  • mkl.h

Description

The function mkl_get_clocks_frequency returns the CPU frequency value (in GHz) based on constant-rate Time Stamp Counter (TSC). Use of the constant-rate TSC ensures that each clock tick is constant even if the CPU frequency changes. Therefore, the returned frequency is constant.

NOTE:

Obtaining the frequency may take some time when mkl_get_clocks_frequency is called for the first time. The same holds for functions second/dsecnd, which call mkl_get_clocks_frequency.

Return Values

Name

Type

Description

freq

double

Frequency value in GHz

See Also