Alphabetical list of most commonly used functions, Trigonometric functions are listed separately. Please see the other categories at the bottom of the page for less common or recently added functions.
Template  Effect 
Input(s) 
Return value 
Returns the absolute value of X 

all{X}) 
Result is true if all the elements of the array [X] or the list {X} are true 
boolean array/list 
Boolean 
any({X}) 
Result is true if any of the elements of the array [X] or the list {X} are true. 
boolean array or list 
Boolean 
at_init(X)  Returns X's value when last initialized or reset  Any  Same as input 
Causes component to get value from instance of C in a grid submodel  Any, two optional integers  Scalar as 1st argument  
binome(P, N)  Returns a value from the binomial distribution with probability P and number of trials N 
Real value from 0 to 1, Integer value 
Integer value 
Rounds up X to the next whole number 

X is an immigration, reproduction or creation channel. Returns true if this individual appeared through that channel. 

colin([X])  Returns an index to the given array, with probabilities proportional to the array's values  Array of numeric values  Integer or enumerated type member 
const_delay(X, T)  Returns the value of X as it was T time units earlier in the run, or 0 or "false" if the component did not exist at that time  Any nonarray type, numeric constant  As 1st argument 
Number of values in the array [X] or the list {X} 
scalar array/list 

Insert a material delay of order 1, 3 or n 
numerical 
numerical, numerical, integer (delayn only)  
dies_of(X)  X is a loss channel. True if channel specifies the removal of the individual this time step.  from loss channel  Boolean 
Returns the duration of the time step level I 

Picks the I'th value form the array [X] 
array of any type,integer or enumerated type member 

Returns e to the power X 

Samples an exponential distribution 
numerical[, integer]  numerical  
first(T)  Returns "true" if argument is the first member of its enumerated type  Enumerated type member  Boolean 
firsttrue([B])  Takes an array of booleans and returns the index of the first with value "true"  Array of booleans  Integer or enumerated type member 
Rounds X down to a whole number 

Returns remainder after dividing X by Y 
numeric, numeric 

following(T)  Returns next member of argument's enumerated type  Enumerated type member  Enumerated type member 
forcst(input, time, horizon [, initial])  New in v6.6: Performs simple trend extrapolation  Real, real, real [,real]  Real 
gaussian_var(X,Y)  Returns a sample from a Gauusian distribution with mean X and SD Y  Real, real  real 
greatest({X}) 
Returns the largest value from an array [X] or the list {X} 
numeric array/list 

howmanytrue([B])  Takes an array of booleans and returns the number that are true  List or array of booleans  Integer 
hypergeom(P, M, S)  Returns a deviate from a hypergeometric distribution for population, P, number of marks M, and sample size S.  integer, integer, integer  integer 
Returns length of hypotenuse of triangle with base X and height Y 
numeric, numeric 

Returns the index (instance number) of a member of a fixed membership or population submodel, for the level I of submodel nesting. 
Integer  Integer or enumerated type member  
New in v6.6: Returns the value of positive infinity. 
Real  None  
Returns the time at which this instance appeared  argument is dummy 

in_preceding(X)  New in Simile v5.7: Returns value of X in preceding submodel instance  Any scalar or array type  As argument 
in_progenitor(X)  New in Simile v5.8: Returns value of X in submodel instance that reproduced to make current one  Any scalar or array type  As argument 
Returns integer part of X 

interpolate(X, [Xarray], [Yarray])  Returns interpolated value from [Yarray] corresponding to X's place in Xarray 
Numeric, Array of numeric, Array of numeric 
Numeric 
iterations(B)  Counts executions of iterative submodel  Boolean  Integer 
Recalls value of X from previous time step 

least({X}) 
Returns the smallest value from an array [X] or the list {X} 
numeric array/list 

Returns natural logarithm of X 

Returns base10 logarithm of X 

Makes an array consisting of N lots of X 
any type, integer 
array of same type 

Returns greater of X and Y 
numeric, numeric 

Returns lesser of X and Y 
numeric, numeric 

order([X])  Returns an array holding the indices of the argument array in ascending order of their values  array of numeric  array of integer 
Returns the id of the individual whose reproduction gave rise to this one, or 0 if it immigrated or was created 

When making an array with makearray, this gives each term's position in the array  argument is nesting depth 

poidev(X)  Returns a value from the Poisson distribution with the given mean  numeric  integer 
posgreatest([X])  Returns the index of the highest value in the argument array  Array of numeric values  Integer or enumerated type member 
posleast([X])  Returns the index of the lowest value in the argument array  Array of numeric values  Integer or enumerated type member 
Returns X raised to the power Y 
numeric, numeric 
numeric  
preceding(T)  Returns previous member of argument's enumerated type  Enumerated type member  Enumerated type member 
Returns the value of this component N time steps ago 

product({X}) 
Result is the product of all elements of the array [X] or the list {X} 
numeric array/list 
numeric 
Generates a single time step pulse of magnitude M at time T, and before or after at intervals of I if I present 
numeric, numeric, numeric 
numeric  
Generate a linearly increasing or decreasing value over time with the given slope 
numeric, numeric 
numeric  
(Deprecated) Returns a random number between X and Y, which stays the same until the simulation is reset. 
numeric, numeric 

Returns a random number between X and Y, with a new value every time step. 
numeric, numeric 

rankings([X])  Returns ranking of each element in order of size  Array of numerics  Array of integers 
Rounds X up or down to the nearest whole number 

sgn(X)  Returns the size of X; 1 if negative, 1 otherwise  
Takes the name of a fixedmembership submodel and returns the number of instances that it has. 

Takes the name of a fixedmembership submodel and returns the size of one of its dimensions 
submodel, numeric 

Insert a material smoothing of order 1, 3 or n 
numerical 
numerical, numerical, integer (smthn only)  
Returns the square root of X 

Generate a step increase (or decrease) at the given time 
numeric, numeric  numeric  
Stops the simulation, displaying value of X in a popup message 

subtotals([X]) 
Returns running totals from summing the elements in the supplied array 
Numeric array  Numeric array 
Result is the sum of all elements of the argument 
numeric array/list 

Returns the current simulation time (the argument is ignored) 

trigger_magnitude()  Returns value of triggering event  As triggering event  
var_delay(X,T)  Returns value of X as it was T time units earlier in run, or 0 or "false" if this is before component existed  Any nonarray type, numeric expression  As first argument 
Returns a value from the list {X} with probabilities proportional to the corresponding values in the list {N} 
numeric list, any list 
member of second arg  
Returns the value from an array [X] or the list {X} whose position in the array or list corresponds to the largest value in the array [N] or list {N} 
numeric array/list, any array/list 


Returns the value from an array [X] or the list {X} whose position in the array or list corresponds to the smallest value in the array [N] or list {N} 
numeric array/list, any array/list 

In addition, a full range of trigonometric functions are provided.
In: Contents >> Working with equations >> Functions
Comments
Please note that these are
Please note that these are NOT all the builtin functions in Simile. Do not forget to check the links below for other functions available. Also helps to do a global search for a function that you are looking for. You might be lucky to guess how it's called.
Alphabetical list of all functions being made.
Thanks for drawing our attention to the fact that the alphabetical list is incomplete. Work is starting to bring the list up to date.