SQL Reference

ATAN

>>-ATAN--(--expression--)--------------------------------------><
 

The schema is SYSFUN.

Returns the arctangent of the argument as an angle expressed in radians.

The argument can be of any built-in numeric data type. It is converted to a &dpfpn; for processing by the function.

The result of the function is a double-precision floating-point number. The result can be null; if the argument is null, the result is the null value.


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