#Scala RPN Calculator

Scala-calculator with operator precedence and parentheses.

Operations perform with BigDecimal numbers.

###Supported operations:

1. +, -, *, /, ^, !
2. sin, cos

###Input examples:

1. 12 + 45.0 - 0.34
2. 1 + 2 * 3 / 4.4 - 2 ^ 3
3. -(23 + 1/4) * 2! + sin(cos(1 + 2^4))