*--- Constants ---* |

true |
logical true (or -1, if used as number) |

false |
logical false (or 0, if used as number) |

pi |
the number Pi (3.14159...) |

*--- Arithmetic Operators ---* |

+ |
sum: x+y |

- |
difference: x-y |

* |
product: x*y |

/ |
division: x/y |

# |
modulo: round(x) mod round(y) |

^ |
power: exponentiation x^y , x>0, y..any real values |

*--- Logic Operators ---* |

> |
greater than |

>= |
greater than or equal |

= |
equal |

>< |
not equal |

< |
less than |

<= |
less than or equal |

and |
boolean or bitwise *and* |

not |
boolean or bitwise *not* |

or |
boolean or bitwise *or* |

xor |
boolean or bitwise *exclusive or* |

*--- Functions ---* |

abs |
absolute value: abs(x), x..any real value |

arccos |
inverse cosine: arccos(x), x..angle in radians |

arcsin |
inverse sine: arcsin(x), x..angle in radians |

arctan |
inverse tangens: arctan(x), x..angle in radians |

cos |
cosine: cos(x), x..angle in radians |

exp |
exponential function: exp(x) |

frac |
fraction: frac(x) = x - int(x) |

gauss |
gauss creates normally distributed random numbers with zero mean and unit standard deviation |

int |
round towards zero: int(x) |

lg |
decadic logarithm: lg(x) |

ln |
natural logarithm: ln(x) |

mean |
returns the mean of a list of variables: mean(*list*), with *list* containing a list of variables reparated by commas; a range of numbered variables may be abbreviated by the ':' sign (i.e. "xx8:11" expands to "xx8, xx9, xx10, xx11"). |

nddens |
density of the standard normal distribution: nddens(x) |

ndint |
integral of the standard normal distribution from -infinity to x: ndint(x) |

ndquant |
quantile of the standard normal distribution for a probability x: ndquant(x) |

rand |
uniformly distributed random numbers: random(x), x..amplitude of noise (mean = 0.0) |

round |
round to the nearest integer: round(x) |

sign |
sign of x: sign(x) |

sin |
sinus: sin(x) |

sqr |
square: sqr(x) |

sqrt |
square root: sqrt(x) |

sum |
returns the sum of a list of variables: sum(*list*), with *list* containing a list of variables reparated by commas; a range of numbered variables may be abbreviated by the ':' sign (i.e. "zz1:3" expands to "zz1, zz2, zz3"). |

tan |
tangens: tan(x) |

var |
returns the variance of a list of variables: var(*list*), with *list* containing a list of variables reparated by commas; a range of numbered variables may be abbreviated by the ':' sign (i.e. "xx8:10,aux4,y1:3" expands to "xx8, xx9, xx10, aux4, y1, y2, y3"). |