# Pi Times

(Redirected from Pi times)
 ○

Pi Times (○) is a monadic scalar function which gives the argument times the mathematical constant pi ${\displaystyle \pi }$. Its glyph ○, which is shared with the dyadic arithmetic function Circular, alludes to pi being the ratio of a circle's circumference to its diameter. The phrase "some value times ${\displaystyle \pi }$" appears frequently in mathematical formulas related to a circle or trigonometric functions while ${\displaystyle \pi }$ raised to some power is rare, which explains the design decision behind this function.

A circular apple pie

## Examples

The value of ${\displaystyle \pi }$ can be obtained by giving the argument of 1.

      ○1
3.141592654


As a pun, ○1 is often called apple pie, jokingly using an unconventional pronunciation of the name APL in conjunction with the homophones pi/pie.