Description: |
Produces the arccosine of X. | ||

Class: |
Elemental function; Generic | ||

Arguments: | X must be of type real. The |X| must be less than or equal to 1. | ||

Results: |
The result type is the same as X and is expressed in radians. The value lies in the range 0 to pi. |

Specific Name | Argument Type | Result Type |
---|---|---|

ACOS | REAL(4) | REAL(4) |

DACOS | REAL(8) | REAL(8) |

QACOS | REAL(16) | REAL(16) |

**Examples**

ACOS (0.68032123) has the value .8225955.

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