The periodic function SIN returns the trigonometric sine of X.
Result = SIN(X)
Returns the double-precision floating-point, complex or single-precision floating-point value.
The angle for which the sine 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. When applied to complex numbers:
SIN(x) = (EXP(i*x) + 1/EXP(i*x))/(2*i)
where i is defined as COMPLEX(0, 1).
If input argument X is an array, the result has the same structure, with each element containing the sine of the corresponding element of X.
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
To find the sine of 0.5 radians and print the result, enter:
The following example plots the SIN function between 0 and 2p with 100 intervals:
X = 2*!PI/100 * FINDGEN(100) PLOT, X, SIN(X)