Return the arc tangent of a floating-point number
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WSupported on Windows
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USupported on Unix
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VSupported on OpenVMS
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xcall FP_ARCTAN(result, operand)
Arguments
result
Returned with the arc tangent of operand. (a8)
operand
The radian value whose arc tangent will be returned. (a8)
Discussion
The FP_ARCTAN subroutine returns the arc tangent of a floating-point number.
The following operation is performed:
result = arctan(operand)
Result and operand are native floating-point numbers represented as a8 variables.
