**Supported operators:**

+ - * / % | addition, subtraction, multiplication, division, modulo |

E | E = 2.7182818284590452353602874 |

abs(a) | the absolute value of a |

acos(a) | arc cosine of a |

asin(a) | arc sine of a |

atan(a) | arc tangent of a |

atan2(a,b) | arc tangent of a/b |

ceil(a) | integer closest to a and not less than a |

cos(a) | cosine of a |

exp(a) | exponent of a (E to the power a) |

floor(a) | integer closest to a, not greater than a |

log(a) | log of a base E |

max(a,b) | the maximum of a and b |

min(a,b) | the minimum of a and b |

pow(a,b) | a to the power b |

random() | pseudorandom number 0 to 1 |

round(a) | integer closest to a |

sin(a) | sine of a |

sqrt(a) | square root of a |

tan(a) | tangent |