TANH scalar function

The TANH function returns the hyperbolic tangent of the argument, where the argument is an angle, expressed in radians.

Read syntax diagramSkip visual syntax diagramTANH( numeric-expression)

The schema is SYSIBM.

The TANH and ATANH functions are inverse operations.

The argument must be an expression that returns the value of any built-in numeric data type that is not DECFLOAT. If the argument is not a double precision floating-point number, it is converted to one 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.

Example: Assume that host variable HTANGENT is DECIMAL(2,1) with a value of 1.5. The following statement returns a double precision floating-point number with an approximate value of 0.90. 
   SELECT TANH(:HTANGENT)
     FROM SYSIBM.SYSDUMMY1;