NAME    [Toc]    [Back]

     mstohz - convert milliseconds to system clock ticks

SYNOPSIS    [Toc]    [Back]

     #include <sys/param.h>

     int
     mstohz(int ms);

DESCRIPTION    [Toc]    [Back]

     mstohz can be used to convert time in milliseconds to system clock ticks,
     as used by the callout(9) facility, in an integer-overflow safe way.

     This function is implemented as a define in the <sys/param.h> header.
     Individual ports can have a processor-specific, more efficient version
     implemented in their <machine/param.h> header as a define.

RETURN VALUES    [Toc]    [Back]

     The return value is the number of clock ticks for the specified value.

SEE ALSO    [Toc]    [Back]

     callout(9)

BUGS    [Toc]    [Back]

     The machine-independent function does not make use of expensive 64-bit
     integer arithmetic, so the result will be rounded down to one second if
     the parameter is larger than 131072 milliseconds.

BSD                              April 4, 2002                             BSD