zl:1 - FTP

3 zl:+$
I
zl:+$ &rest args Function
Returns the sum of its arguments. If there are no arguments, it returns 0,
which is the identity for this operation.
The following functions are synonyms of zl:+$ :
zl:plus
+
number &rest more-numbers
Function
With only one argument, - returns the negative of its argument. With
more than one argument, - returns its first argument minus all of the rest
of its arguments.
If the arguments are of different numeric types they are converted to a
common type, which is also the type of the result. See the section
II Coercion Rules for Numbers II in Symbolics Common Lisp: Language Concepts.
Examples:
(- 8) => -8
(- 9 3) => 6
(- 9 4 2 1) => 2
(- #C(3 4) 4) => #C(-1 4)
(- 9 5/6) => 49/6
The following function is a synonym of - :
zl:-$
For a table of related items: See the section II Arithmetic Functions II in
Symbolics Common Lisp: Language Concepts.
zl:-$ arg &rest args Function
With only one argument, z1:-$ returns the negative of its argument. With
more than one argument, zl:-$ returns its first argument minus all of the
rest of its arguments.
The following function is a synonym of zl:-$ :
/ number &rest more-numbers Function
With more than one argument / successively divides the first argument by
all the others and returns the result. With one argument, / returns the
reciprocal of the argument: (I x) is the same as (/ 1 x). Arguments can be
of any numeric type; the rules of coe;rcion are applied to arguments of dissimilar
numeric types.