gaussd (x, m, s)  Gaussian distribution ("Bell Curve") with meanvalue = m and standarddeviation = s.  

min (a, b)  Returns the lesser of the two values  
max (a, b)  Returns the greater of the two values  
round (x)  Rounds x up or down to the closest integer  
floor (x)  Rounds x down  
ceil (x)  Rounds x up  
abs (x)  Absolute value of x (also x)  
sgn (x) 
