scipy.linalg.lapack.zlantr

scipy.linalg.lapack.zlantr(norm, a, uplo='U', diag='N') = <flapack function zlantr>

Norm of a triangular or trapezoidal matrix (LAPACK zlantr).

Parameters:

normstr

Which norm: 'M' for the largest absolute entry, '1' or 'O' for the 1-norm, 'I' for the infinity norm, 'F' or 'E' for the Frobenius norm. Lowercase is accepted.

andarray

Matrix of shape (m, n); only the triangle named by uplo is read.

uplostr, optional

'U' if a is upper triangular, 'L' if lower. Default is 'U'.

diagstr, optional

'U' if the matrix has a unit diagonal, 'N' otherwise. Default is 'N'.

Returns:

n2float

The norm. Real for every flavor.