IDL

TAN

TAN

The TAN function computes the tangent of X.

Examples


; Find the tangent of 0.5 radians and store the result in 
; the variable T:
T = TAN(0.5)

Syntax


Result = TAN(X)

Return Value


Returns the tangent of the specified angle.

Arguments


X

The angle for which the tangent is desired, specified in radians. If X is double-precision floating or complex, the result is of the same type. All other types are converted to single-precision floating-point and yield floating-point results. If X is an array, the result has the same structure, with each element containing the tangent of the corresponding element of X.

Keywords


Thread Pool Keywords

This routine is written to make use of IDL’s thread pool, which can increase execution speed on systems with multiple CPUs. The values stored in the !CPU system variable control whether IDL uses the thread pool for a given computation. In addition, you can use the thread pool keywords TPOOL_MAX_ELTS, TPOOL_MIN_ELTS, and TPOOL_NOTHREAD to override the defaults established by !CPU for a single invocation of this routine. See Thread Pool Keywords for details.

Version History


Original

Introduced

See Also


ATAN, TANH

Notes


This page has no user notes yet. Be the first one!


This information is not subject to the controls of the International Traffic in Arms Regulations (ITAR) or the Export Administration Regulations (EAR). However, it may be restricted from transfer to various embargoed countries under U.S. laws and regulations.
© 2014 Exelis Visual Information Solutions