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Base SAS Functions Accessible from SAS/IML Software

You can call most functions available in Base SAS software from SAS/IML programs. If you call a Base SAS function with a matrix argument, the function will usually act elementwise on each element of teh matrix.

The following Base SAS functions are either not available from SAS/IML software, or behave differently from the Base SAS function of the same name.

Function	Comment
CALL CATS	return variable must be preinitialized
DIF $\text{[math]}$	not supported; use the SAS/IML DIF function instead.
DIM	not supported
HBOUND	not supported
LAG $\text{[math]}$	not supported; use the SAS/IML LAG function instead.
LBOUND	not supported
MOD	base function performs "fuzzing;" the SAS/IML function does not
PUT	Use the PRINT statement instead
CALL PRXNEXT	return variables must be preinitialized
CALL PRXPOSN	return variables must be preinitialized
CALL PRXSUBSTR	return variables must be preinitialized
CALL RXCHANGE	return variables must be preinitialized
CALL RXMATCH	return variables must be preinitialized
CALL RXSUBSTR	return variables must be preinitialized
CALL SCAN	return variables must be preinitialized
CALL SCANQ	return variable must be preinitialized
VVALUE	not applicable: interrogates DATA step variables
VVALUEX	not applicable: interrogates DATA step variables
VNEXT	not applicable: interrogates DATA step variables

There are also some Base SAS features that are not supported by the SAS/IML language. For example, the DATA step permits N-literals (strings that end with ’N’) to be interpreted as the name of a variable, but the SAS/IML language does not.

The following Base SAS functions can be called from SAS/IML. The functions are documented in the SAS Language Reference: Dictionary. In some cases, SAS/IML does not accept all variations in the syntax. For example, SAS/IML does not accept the OF keyword as a way to generate an argument list in a function.

The functions displayed in italics are documented elsewhere in this user’s guide. These functions operate on matrices in addition to scalar values, as do many of the mathematical and statistical functions.