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 |
(Boole func int1 [ int2 ...]) |
Serves as a general bitwise Boolean function |
(cond [( test result ...) ...]) |
Serves as the primary conditional function for AutoLISP |
(eq expr1 expr2) |
Determines whether two expressions are identical |
(equal expr1 expr2 [fuzz]) |
Determines whether two expressions are equal |
(if testexpr thenexpr [elseexpr]) |
Conditionally evaluates expressions |
(or [ expr ...]) |
Returns the logical OR of a list of expressions |
(repeat int [ expr ...]) |
Evaluates each expression a specified number of times, and returns the value of the last expression |
(while testexpr [ expr ...]) |
Evaluates a test expression, and if it is not nil, evaluates other expressions; repeats this process until the test expression evaluates to nil |
