numpy.lib.scimath.logn

lib.scimath.logn(n, x) [source]

Take log base n of x.

If x contains negative inputs, the answer is computed and returned in the complex domain.

Parameters

narray_like

The integer base(s) in which the log is taken.

xarray_like

The value(s) whose log base n is (are) required.

Returns

outndarray or scalar

The log base n of the x value(s). If x was a scalar, so is out, otherwise an array is returned.

Examples

>>> np.set_printoptions(precision=4)

>>> np.lib.scimath.logn(2, [4, 8])
array([2., 3.])
>>> np.lib.scimath.logn(2, [-4, -8, 8])
array([2.+4.5324j, 3.+4.5324j, 3.+0.j    ])