# PI()

Returns Pi, the perimeter-to-diameter-ratio of a circle

Syntax

  PI () -> nPi

Returns

  <nPi> the math constant Pi with maximum precision available

Description

  The function PI() can be used if the constant Pi is needed with maximum precision. One of the most known interpretations of this number is the constant perimeter-to-diameter-ratio of circles.

Examples

          // the diameter of a circle-like swimming pool is 3.4 meters, how
          // long is the perimeter ?

          ? str(PI()*3.4,5,3)+" meters"   --> 10.681 meters

Status

  Ready

Compliance

  PI() is compatible with CT3's PI().

Platforms

  All

Files

  Source is trig.c, library is libct.

See Also

- SIN()
- COS()
- TAN()
- COT()
- ASIN()
- ACOS()
- ATAN()
- ATN2()
- SINH()
- COSH()
- TANH()
- RTOD()
- DTOR()