ch2_3_num_compare
Number comparison operators
Comparison between numbers, return T or NIL. Accept mix of integers and floats. Accept any number of arguments, but for trivial zero or single argument always return T.
=
Tests if all arguments are equal.
>(= 1 1.0 (- 2 1)) ; all are 1 T
/=
Tests if no argument is equal to another.
>(/= 1 2 3 1.0 4) ; there is 1 twice NIL
<
Tests if arguments are ordered from smallest to largest.
>(< 1 2 3 3.0 4) ; there is 3 twice NIL
>
Tests if arguments are ordered from largest to smallest.
>(> 4 3 2) T
<=
Tests if arguments are ordered so the next argument is at least the same or larger than previous.
>(<= 1 2 3 3.0 3 4) T
>=
Tests if arguments are ordered so the next argument is at most the same or smaller than previous.
>(>= 1 2 3 3.0 3 4) NIL
ch2_3_num_compare.txt · Last modified: 2021/04/23 02:03 by admin