$RxpR: Difference between revisions

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  $rxpr(64, .5) = 8
  $rxpr(64, .5) = 8


  $RXPR(256, .25) = 4
  $rxpr(256, .25) = 4
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{{Template:Math $functions note}}
{{Template:Math $functions note}}

Revision as of 18:52, 7 January 2012

Real base raised to real exponent

Most Sirius $functions have been deprecated in favor of Object Oriented methods. There is currently no direct OO equivalent for the $RxpR function.

The $RxpR function returns the value of its first argument raised to the power of its second argument.

Syntax

%num = $RxpR(x)

If either of the following is true, an error message is printed and a 0 is returned:

  • x is less than zero.
  • x equals 0, and y is less than or equal to 0.

For example:

$rxpr(9, 2) = 92 = 81 $rxpr(64, .5) = 8 $rxpr(256, .25) = 4

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.