atan

atan calculates the arctangent.

r = atan(m)

Return Value

r is the arctangent of m.

Parameters

m

m is a real or complex matrix.

Comment

Algorithm: (1 ./ 2i) .* log((1 + 1i .* x) ./ (1 - 1i .* x)).

Example

* printf("%.17f\n", atan(1)*4);
3.14159265358979310

See also

Overview Mathematic, atan2, tan

_id-1320956