mstohz(9) - NetBSD Manual Pages

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MSTOHZ(9)              NetBSD Kernel Developer's Manual              MSTOHZ(9)


NAME

     mstohz -- convert milliseconds to system clock ticks


SYNOPSIS

     #include <sys/param.h>

     int
     mstohz(int ms);


DESCRIPTION

     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

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


SEE ALSO

     callout(9)


BUGS

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

NetBSD 5.1                       April 4, 2002                      NetBSD 5.1