Equality and Conditional Functions
The following table provides summary descriptions of the AutoLISP equality and conditional functions.
|
Equality and conditional functions |
|
|---|---|
|
Function |
Description |
|
(= (equal to)numstr [numstr] ...) |
Returns T if all arguments are numerically equal, and returns nil otherwise |
|
(/= (not equal to)numstr [numstr] ...) |
Returns T if the arguments are not numerically equal, and nil if the arguments are numerically equal |
|
(< (less than)numstr [numstr] ...) |
Returns T if each argument is numerically less than the argument to its right, and returns nil otherwise |
|
(<=(less than or equal to)numstr [numstr] ...) |
Returns T if each argument is numerically less than or equal to the argument to its right, and returns nil otherwise |
|
(> (greater than)numstr [numstr] ...) |
Returns T if each argument is numerically greater than the argument to its right, and returns nil otherwise |
|
(>=(greater than or equal to)numstr [numstr] ...) |
Returns T if each argument is numerically greater than or equal to the argument to its right, and returns nil otherwise |
|
(and [expr ...]) |
Returns the logical AND of a list of expressions |
|
(Boolefunc int1 [int2 ...]) |
Serves as a general bitwise Boolean function |
|
(cond [(test result ...) ...]) |
Serves as the primary conditional function for AutoLISP |
|
(eqexpr1 expr2) |
Determines whether two expressions are identical |
|
(equalexpr1 expr2 [fuzz]) |
Determines whether two expressions are equal |
|
(iftestexpr thenexpr [elseexpr]) |
Conditionally evaluates expressions |
|
(or [expr ...]) |
Returns the logical OR of a list of expressions |
|
(repeatint [expr ...]) |
Evaluates each expression a specified number of times, and returns the value of the last expression |
|
(whiletestexpr [expr ...]) |
Evaluates a test expression, and if it is not nil, evaluates other expressions; repeats this process until the test expression evaluates to nil |