acos

Type:	-	function (subr)
Source:	-	xlmath.c

Syntax

(acos expr)

expr - floating point number/expression
returns - the arccosine of the number

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

See the acos function in the XLISP 2.0 manual.

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