2011

DescriptionExpression
Returns T if the arguments are not numerically equal,
and nil if the arguments are numerically equal.
(/= numstr [numstr] ...) or (<>
numstr [numstr] ...)
Returns T if each argument is numerically less than
the argument to the right, and returns nil otherwise.
(< numstr [numstr] ...)
Returns T if each argument is numerically less than
or equal to the argument to the right, and returns
nil otherwise.
(<= numstr [numstr] ...)
Returns T if each argument is numerically greater
than the argument to the right, and returns nil oth-
erwise.
(> numstr [numstr] ...)
Returns T if each argument is numerically greater
than or equal to the argument to the right, and re-
turns nil otherwise.
(>= numstr [numstr] ...)
Returns the logical AND of a list of expressions.(and expr ...)
Returns the logical OR of a list of expressions.(or expr ...)
Symbol-Handling Functions
The expression evaluator supports the following symbol-handling function.
The words in italics can be replaced by an actual value or a variable.
DescriptionExpression
Verifies that the item evaluates to nil.(not item)
Conversion Functions
The expression evaluator supports the following conversion functions. The
words in italics can be replaced by an actual value or a variable.
DescriptionExpression
Converts an angular value in radians into a string.(angtos angle [mode [precision] ]
)
1544 | Chapter 12 Expression Evaluator