ACOSD(X) (IBM extension)

Purpose

Arccosine (inverse cosine) function. Result in degrees.

Class

Elemental function

Argument type and attributes

X

An INTENT(IN) REAL. Its value must satisfy the inequality |X| ≤ 1.

Result type and attributes

Same as X.

Result value

• It is expressed in degrees and approximates arccos(X).
• It is in the range 0° ≤ ACOSD(X) ≤ 180°.