$Log2 or $Log 2: Difference between revisions

From m204wiki
Jump to navigation Jump to search
(Created page with " <span class="pageSubtitle">Log base 2 function</span> <p class="warning">Most Sirius $functions have been deprecated in favor of Object Oriented methods. The OO equivalent for t...")
 
m (1 revision: from DME w/ love)
(No difference)

Revision as of 20:57, 4 January 2012

Log base 2 function

Most Sirius $functions have been deprecated in favor of Object Oriented methods. The OO equivalent for the $Log2 function is the Log2 function.

The $Log2 function returns the base-2 logarithm of the number x.

Syntax

%num = $Log2(x)

If x is not greater than 0, an error message is printed and a 0 is returned.

See the SIRFUNC EXEC parameter for an explanation of when this high-performance, high-precision version of the IBM mathematical function from the Sirius Mods is used, as opposed to the version of the $function in the Model 204 FUND or FUNDLE CSECT.