bundles / scipy 2.0.0.dev0+git20260907.41eeb59 / scipy / linalg / _fblas / idamax

blas_function

`scipy.linalg._fblas:idamax`

source: build-install/usr/lib/python3.14/site-packages/scipy/linalg/_fblas.cpython-314-x86_64-linux-gnu.so

Signature

def idamax(x, n = None, offx = 0, incx = 1)

Summary

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

Parameters

x : ndarray: Input vector.
n : int, optional: Number of elements to process. Default is the whole vector.
offx : int, optional: Index of the first element of x to use. Default is 0.
incx : int, optional: Stride between successive elements of x. Default is 1.

Returns

k : int: Index of the element with the largest absolute value. This is a 0-based index into x; the underlying BLAS routine returns a 1-based index, which SciPy shifts by one.

Aliases

scipy.linalg._fblas.idamax