Source code in the wren programming language

var e = 1.exp

System.print("e         = %(e)")
System.print("pi        = %(Num.pi)")
System.print("sqrt(2)   = %(2.sqrt)")
System.print("ln(3)     = %(3.log)")    // log base e
System.print("exp(2)    = %(2.exp)")
System.print("abs(-e)   = %((-e).abs)")
System.print("floor(e)  = %(e.floor)")
System.print("ceil(e)   = %(e.ceil)")
System.print("pow(e, 2) = %(e.pow(2))")