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<, > , <=, >= (PREDICATES)

Format: (< <num1> <num2> ... ) (> <num1> <num2> ... ) (<= <num1> <num2> ... ) (>= <num1> <num2> ... )

Required arguments: 1

<num1> <num2> ... must evaluate to numbers.

Returns T if the sequence of arguments is ordered (<: ascending, > : descending) or partially ordered (<=: less than or equal, >=: greater than or equal). Otherwise returns nil.

Examples:

> (< 2 67)
T

> (< 67 2)
NIL

> (>  67 2)
T

> (< 3 6 9)
T

> (< 4)
T

> (< 2 2 6)
NIL

> (<= 2 2 6)
T

> (>= 2 2 6)
NIL

> (< 6/2 3.0)
NIL