FreeMat
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Section: Mathematical Functions
Computes the atan
function for its argument. The general syntax for its use is
y = atan(x)
where x
is an n
-dimensional array of numerical type. Integer types are promoted to the double
type prior to calculation of the atan
function. Output y
is of the same size and type as the input x
, (unless x
is an integer, in which case y
is a double
type).
Mathematically, the atan
function is defined for all arguments x
as
For real valued variables x
, the function is computed directly using the standard C library's numerical atan
function. For both real and complex arguments x
, note that generally
due to the periodicity of tan(x)
.
The following code demonstates the atan
function over the range [-1,1]
.
--> t = linspace(-1,1); --> plot(t,atan(t))