BLAS Level 1: iamax

iamax (defined in namespace flens::blas) finds the index of the element with maximum absolute value, i.e. find \(i\) such that \(|x_i| = \max\limits_k |x_k|\)

template <typename X>
typename DenseVector<X>::IndexType
iamax(const DenseVector<X> &x);

x	`(input) real or complex valued DenseVector` Vector \(x\).

Return value:

Index \(i\) such that \(|x_i| = \max\limits_k |x_k|\).