from math import pi
from math import sqrt
from math import pow


var1 = abs(-12)
var1 = math.fabs(-12.5)
var1 = min([1,2,3])
var1 = max([1,2,3])
var1 = math.exp(1)
var1 = math.pow(2,3)
var1 = math.log10(11)
var1 = math.log(100,10)   # 		var1 = math.log(11)	  ln(11) ==> 2.3978952727983707

var1 = math.sqrt(2)

var1 = math.floor(-12.2)	  => -13
var1 = math.floor(12.2)	  => 12
var1 = math.floor(-12.2)	  => -12
var1 = math.floor(12.2)	  => 12

var1 = round(12.2)	  => 12
var1 = round(12.5)	  => 12
var1 = round(12.6)	  => 13
var1 = round(12.66,1)	  => 12.7
var1 = round(123.445,n)   # Anzahl der Nachkommastellen