Viamax ( x -- max-i )
Basic Linear Algebra Subroutines (BLAS) interface » BLAS interface vector operations

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Vocabulary
math.blas.vectors

Inputs

x	a blas-vector-base

Outputs

max-i

an integer

Word description
Return the index of the element in x with the largest norm-1. If more than one element has the same norm-1, returns the smallest index. Corresponds to the IxAMAX routines in BLAS.

See also
Vamax

Definition

IN: math.blas.vectors

GENERIC: Viamax ( x -- max-i )

Methods

USING: math math.blas.ffi math.blas.vectors
math.blas.vectors.private ;

M: complex-double-blas-vector Viamax (prepare-nrm2) IZAMAX 1 - ;


USING: math math.blas.ffi math.blas.vectors
math.blas.vectors.private ;

M: complex-float-blas-vector Viamax (prepare-nrm2) ICAMAX 1 - ;


USING: math math.blas.ffi math.blas.vectors
math.blas.vectors.private ;

M: double-blas-vector Viamax (prepare-nrm2) IDAMAX 1 - ;


USING: math math.blas.ffi math.blas.vectors
math.blas.vectors.private ;

M: float-blas-vector Viamax (prepare-nrm2) ISAMAX 1 - ;

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Factor 0.99 x86.64 (2168, heads/master-c0150244ae, Jun 20 2022 14:04:16)