_PI

The _PI function returns π as a _FLOAT value with an optional multiplier parameter.

Syntax

circumference = _PI[(multiplier)]

Parameters

• Optional multiplier (2 * radius in above syntax) allows multiplication of the π value.

Description

• Function can be used in to supply π or multiples in a program.
• Accuracy is determined by the return variable type AS SINGLE, DOUBLE or _FLOAT.
• The π value can also be derived using 4 * ATN(1) for a SINGLE value.

Examples

Example: Calculating the area of a circle using a SINGLE variable in this case.

radius = 5 circlearea = _PI(radius ^ 2) PRINT circlearea

78.53982

See also

• _ATAN2, TAN
• ATN
• SIN, COS

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