ACOS(X)

Purpose

Arccosine (inverse cosine) function.

Class

Elemental function

Argument Type and Attributes

X
must be of type real with a value that satisfies the inequality |X| <= 1.

Result Type and Attributes

Same as X.

Result Value

Examples

ACOS (1.0) has the value 0.0.


Specific Name Argument Type Result Type Pass As Arg?
ACOS default real default real yes
DACOS double precision real double precision real yes
QACOS (1) REAL(16) REAL(16) yes
QARCOS (1) REAL(16) REAL(16) yes

Notes:

  1. IBM Extension.

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