Gets the mathematical constant p, accurate to 15 digits.
The number 3.14159265358979.
Pi()
<h3>Pi Example</h3> <!--- By default, ColdFusion displays only 11 significant digits. Use NumberFormat to display all 15. ---> The Pi function Returns the number <cfoutput> #NumberFormat(Pi(), "_._______________")#, </cfoutput> the mathematical constant pi, accurate to 15 digits.