Returns the hyperbolic arc tangent of an arithmetic expression.
ATANH(x)
x is a floating-point value such that -1 < x < 1.
ATANH(0.5) /* returns 0.54930 */
An ATANH operation on floating-point decimal data is actually performed using the floating-point binary operation. Thus, the range of the operands and the result of the operation are limited to the ranges for floating-point binary numbers.
Description
The ATANH(x) function returns the hyperbolic arc tangent of x. The result has the same data type as x.