$Log2 or $Log 2: Difference between revisions
Jump to navigation
Jump to search
mNo edit summary |
m (moved $Log2 to $Log2 or $Log 2) |
(No difference)
| |
Revision as of 20:11, 10 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 (or its alias, $Log_2) returns the base-2 logarithm of the number x.
Syntax
%num = $Log2(x)
%num = $Log_2(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.