Elemental Intrinsic Function (Generic): Produces the arctangent of an argument.
result = ATAN (x)
x |
(Input) Must be of type real.
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結果
The result type and kind is the same as x and is expressed in radians. The value lies in the range -pi/2 to pi/2.
Specific Name
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Argument Type
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Result Type
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ATAN
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REAL(4)
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REAL(4)
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DATAN
|
REAL(8)
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REAL(8)
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QATAN
|
REAL(16)
|
REAL(16)
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例
ATAN (1.5874993) has the value 1.008666.