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38 lines
990 B
Plaintext
38 lines
990 B
Plaintext
{{QBDLDATE:07-31-2022}}
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{{QBDLTIME:23:39:16}}
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{{DISPLAYTITLE: _PI}}
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The [[_PI]] function returns '''ã''' as a [[_FLOAT]] value with an optional multiplier parameter.
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{{PageSyntax}}
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: {{Parameter|circumference}} = [[_PI]][({{Parameter|multiplier}})]
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{{Parameters}}
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* Optional {{Parameter|multiplier}} (''2 * radius'' in above syntax) allows multiplication of the π value.
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{{PageDescription}}
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* Function can be used in to supply π or multiples in a program.
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* Accuracy is determined by the return variable type [[AS]] [[SINGLE]], [[DOUBLE]] or [[_FLOAT]].
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* The ã value can also be derived using 4 * [[ATN]](1) for a [[SINGLE]] value.
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{{PageExamples}}
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''Example:'' Calculating the area of a circle using a [[SINGLE]] variable in this case.
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{{CodeStart}}radius = 5
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circlearea = {{Cl|_PI}}(radius ^ 2)
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PRINT circlearea
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{{CodeEnd}}
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{{OutputStart}} 78.53982
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{{OutputEnd}}
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{{PageSeeAlso}}
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* [[_ATAN2]], [[TAN]]
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* [[ATN]] {{text|(arctangent)}}
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* [[SIN]], [[COS]]
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{{PageNavigation}}
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