ATN2
(Function)
Obtains the arc tangent of expression 1 divided by expression 2.
ATN2 (<Expression1>, <Expression2>)
This statement obtains the arc tangent value of <Expression1> divided by <Expression2>.
The unit of the obtained value is degrees and its range is from -180 to 180.
If <Expression> includes a double precision real numeral, the obtained value becomes double precision. Otherwise, a single precision value is obtained.
The following is a value range of ATN2.
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First quadrant
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Second quadrant
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Third quadrant
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Fourth quadrant
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Lower limit value
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0
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90
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-180
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-90
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Upper limit value
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90
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180
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90
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- 0
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DEFSNG lf1, lf2, lf3, lf4, lf5, lf6, lf7, lf8
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lf1 = ATN2(1, 2)
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'Assigns the arc tangent value of (1, 2) to lf1.
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lf2 = ATN2(lf4, lf5)
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'Assigns the arc tangent value of (lf4, lf5) to lf2.
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lf3 = ATN2(lf6, lf7) * lf8
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'Assigns the arc tangent value of (lf6, lf7)
'multiplied by lf8 to lf3.
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