scipy.linalg.blas.izamax

scipy.linalg.blas.izamax(x, n=None, offx=0, incx=1) = <fblas function izamax>

Return the index of the element of x with the largest absolute value (BLAS izamax).

Parameters:

xndarray

Input vector.

nint, optional

Number of elements to process. Default is the whole vector.

offxint, optional

Index of the first element of x to use. Default is 0.

incxint, optional

Stride between successive elements of x. Default is 1.

Returns:

kint

Index of the element maximizing abs(x.real) + abs(x.imag). This is a 0-based index into x; the underlying BLAS routine returns a 1-based index, which SciPy shifts by one.