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acos

acos

type: function (subr) 
location: built-in
source file: xlmath.c
Common LISP compatible: yes
supported on: all machines

SYNTAX

(acos <expr> )
        <expr>          -       floating point number/expression

DESCRIPTION

The acos function returns the arc cosine of the <expr>. The result is in radians.

EXAMPLES

(acos  0.0)                             ; returns 1.5708
(acos  1.0)                             ; returns 0.0
(acos -1.0)                             ; returns 3.14159
(acos    0)				; error: bad integer operation


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