$Log10 or $Log_10

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Log base 10 function

Most Sirius $functions have been deprecated in favor of Object Oriented methods. The OO equivalent for the $Log10 function is the Log10 function.

The $Log10 function (or its alias, $Log_10) returns the base-10 logarithm of the number x.

Syntax

%num = $Log10(x)

%num = $Log_10(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.

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