gethz(S)                       6 January 1993                       gethz(S)


 Name

    gethz - return the frequency of the system clock in ticks per second

 Syntax


    cc  . . .  -lc


    int gethz()


 Description

    gethz returns the frequency of the system clock in ticks per second.

 Warning

    In the current implementation, gethz searches the environment list (see
    environ(M)) for a string of the form HZ=val, and returns val.  If HZ can-
    not be interpreted as an integer, gethz returns 0.

    If HZ is not defined in the environment, gethz makes a call to sysconf(S)
    with parameter SCCLKTCK to determine the value of CLKTCK.  gethz
    returns the value of CLKTCK.

 Note

    The implementation of gethz may change.

 See also

    environ(M)

 Standards conformance

    gethz is not part of any currently supported standard; it is an extension
    of AT&T System V provided by the Santa Cruz Operation.