cupy.linalg.slogdet¶

cupy.linalg.slogdet(a)[source]¶

Returns sign and logarithm of the determinant of an array.

It calculates the natural logarithm of the determinant of a given value.

Parameters:	a (cupy.ndarray) – The input matrix with dimension `(..., N, N)`.
Returns:	It returns a tuple `(sign, logdet)`. `sign` represents each sign of the determinant as a real number `0`, `1` or `-1`. ‘logdet’ represents the natural logarithm of the absolute of the determinant. If the determinant is zero, `sign` will be `0` and `logdet` will be `-inf`. The shapes of both `sign` and `logdet` are equal to `a.shape[:-2]`.
Return type:	tuple of `ndarray`