According to this, the PERF_COUNTER_MULTI_BASE is the base required for calculations involving ERF_100NSEC_MULTI_TIMER_INV.
Ie. B = the value of PERF_COUNTER_MULTI_BASE.
However, the calculation shown here is somewhat different to the formula you have.
In reply to Re: Help on Win32::Perflib
by BrowserUk
in thread Help on Win32::Perflib
by shonorio
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