$RxpI: Difference between revisions
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==Syntax== | ==Syntax== | ||
<p class="syntax"><span class="term">%num</span><span class="literal"> = $RxpI(</span><span class="term">x</span>, <span class="term">y</span><span class="literal">)</span> </p> | <p class="syntax"><span class="term">%num</span><span class="literal"> = $RxpI(</span><span class="term">x</span>, <span class="term"></span><span class="term">y</span><span class="literal">)</span> </p> | ||
==Usage notes== | ==Usage notes== | ||
Revision as of 18:30, 12 April 2013
Real base raised to integer exponent
Most Sirius $functions have been deprecated in favor of Object Oriented methods. There is currently no direct OO equivalent for the $RxpI function.
The $RxpI function returns the value of its first argument raised to the power of its second argument. The second argument is initially rounded to the nearest integral value.
Syntax
%num = $RxpI(x, y)
Usage notes
- Omitted arguments are set to 0.
- If x equals 0, and |y| is less than or equal to 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.
Examples
$rxpi(2, 3) = 23 = 8 $rxpi(.5, 1.4) = $rxpi(.5, 1) = .5