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 5.0 April 4, 2002 NetBSD 5.0
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