The TAN function computes the tangent of X.
; Find the tangent of 0.5 radians and store the result in
; the variable T:
T = TAN(0.5)
Result = TAN(X)
Returns the tangent of the specified angle.
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.
Thread Pool Keywords
This routine is written to make use of IDLâs 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.