CALL TANH Routine

Returns the hyperbolic tangent.

Category:	Mathematical
Restriction:	This function is not valid on the CAS server.
Note:	Argument types for arguments that are updated must match in CALL routines. All argument types must be CHAR, VARCHAR, or NUMERIC. If the argument types do not match, a warning is issued to the log.

Table of Contents

Syntax

CALL TANH(argument <, argument, ...>);

Required Argument

argument

is numeric.

Restriction

The CALL TANH routine accepts only variables as valid arguments. Do not use a constant or a SAS expression, because the CALL routine is unable to update these arguments.

Details

The subroutine TANH replaces each argument by the tanh of that argument. For example,

is replaced by

multiline equation line 1 t a n h left-parenthesis x Subscript j Baseline right-parenthesis equals StartFraction epsilon Superscript x Super Subscript j Superscript Baseline minus epsilon Superscript minus x Super Subscript j Superscript Baseline Over epsilon Superscript x Super Subscript j Superscript Baseline plus epsilon Superscript minus x Super Subscript j Superscript Baseline EndFraction

If any argument contains a missing value, then CALL TANH returns missing values for all the arguments.

Example

The following SAS statements produce these results:

SAS Statement	Result
x=0.5; y=-0.5; call tanh(x, y); put x= y=;	x=0.4621171573 y=-0.462117157

CALL TANH Routine

Syntax

Required Argument

argument

Details

Example

See Also