Supported Vensim Functions

The following table lists the Vensim functions that are currently supported by SDEverywhere. (If you are a Stella user, refer to the Supported XMILE and Stella Functions page.)

Notes:

• This is a subset of the full list of Vensim functions that can be found in the Vensim help documentation.
• The "C" column shows which functions are supported when C is the code generation target.
• The "JS" column shows which functions are supported when JavaScript is the code generation target.
• If you have a model that uses a function that is not currently supported, contributions are welcome! Consult with the maintainers on the SDEverywhere discussion board for assistance.
• Refer to the Sample Models page for more details on sample models included in this repository that are used to validate SDEverywhere's handling of these functions.

Function	C	JS	Notes
ABS	✅	✅
ACTIVE INITIAL	✅	✅
ALLOCATE AVAILABLE	✅	❌	See caveats for SDEverywhere's implementation of this function.
ARCCOS	✅	✅
ARCSIN	✅	✅
ARCTAN	✅	✅
COS	✅	✅
DELAY1	✅	✅
DELAY1I	✅	✅
DELAY3	✅	✅
DELAY3I	✅	✅
DELAY FIXED	✅	❌
DEPRECIATE STRAIGHTLINE	⚠️	❌	The fisc (fiscal period) argument is not currently supported.
ELMCOUNT	✅	✅
EXP	✅	✅
GAME	✅	✅	Full support for the GAME function was added in August 2024. See #483 for more details.
GAMMA LN	✅	❌
GET DATA BETWEEN TIMES	✅	✅
GET DIRECT CONSTANTS	✅	✅
GET DIRECT DATA	✅	✅
GET DIRECT LOOKUPS	✅	✅
GET DIRECT SUBSCRIPT	⚠️	⚠️	Currently only csv files are supported for this function (no xlsx support yet).
GET XLS CONSTANTS	✅	✅	This is treated as synonymous with GET DIRECT CONSTANTS; see #402.
GET XLS DATA	✅	✅	This is treated as synonymous with GET DIRECT DATA; see #402.
GET XLS LOOKUPS	✅	✅	This is treated as synonymous with GET DIRECT LOOKUPS; see #402.
IF THEN ELSE	✅	✅
INITIAL	✅	✅
INTEG	✅	✅
INTEGER	✅	✅
LN	✅	✅
LOOKUP BACKWARD	✅	✅
LOOKUP FORWARD	✅	✅
LOOKUP INVERT	✅	✅
MAX	✅	✅
MIN	✅	✅
MODULO	✅	✅
NPV	✅	✅
POWER	✅	✅
PULSE	✅	✅
PULSE TRAIN	✅	✅
QUANTUM	✅	✅
RAMP	✅	✅
SAMPLE IF TRUE	✅	✅
SIN	✅	✅
SMOOTH	✅	✅
SMOOTHI	✅	✅
SMOOTH3	✅	✅
SMOOTH3I	✅	✅
SQRT	✅	✅
STEP	✅	✅
TAN	✅	✅
TREND	✅	✅
VECTOR ELM MAP	✅	✅
VECTOR SELECT	⚠️	⚠️	Currently the only supported numerical_action values are 0 (sum) and 3 (max).
VECTOR SORT ORDER	✅	✅
VMAX	✅	✅
VMIN	✅	✅
WITH LOOKUP	✅	✅
XIDZ	✅	✅
ZIDZ	✅	✅