trader_acos

    (PECL trader >= 0.2.0)

    trader_acos — Vector Trigonometric ACos

    说明

    trader_acos(array $real): array

    Calculates the arc cosine for each value in real and returns the resulting array.

    参数

    real

    浮点数数组。

    返回值

    Returns an array with calculated data or false on failure.

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