Man page - imax1(3)

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Manual

imax1

NAME
SYNOPSIS
Functions
Detailed Description
Function Documentation
integer function icmax1 (integer n, complex, dimension(*) cx, integer incx)
integer function izmax1 (integer n, complex*16, dimension(*) zx, integerincx)
Author

NAME

imax1 - imax1: argmax_i | x_i | (in LAPACK)

SYNOPSIS

Functions

integer function icmax1 (n, cx, incx)
ICMAX1
finds the index of the first vector element of maximum absolute value.
integer function izmax1 (n, zx, incx)
IZMAX1
finds the index of the first vector element of maximum absolute value.

Detailed Description

Function Documentation

integer function icmax1 (integer n, complex, dimension(*) cx, integer incx)

ICMAX1 finds the index of the first vector element of maximum absolute value.

Purpose:

ICMAX1 finds the index of the first vector element of maximum absolute value.

Based on ICAMAX from Level 1 BLAS.
The change is to use the ’genuine’ absolute value.

Parameters

N

N is INTEGER
The number of elements in the vector CX.

CX

CX is COMPLEX array, dimension (N)
The vector CX. The ICMAX1 function returns the index of its first
element of maximum absolute value.

INCX

INCX is INTEGER
The spacing between successive values of CX. INCX >= 1.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Contributors:

Nick Higham for use with CLACON.

integer function izmax1 (integer n, complex*16, dimension(*) zx, integerincx)

IZMAX1 finds the index of the first vector element of maximum absolute value.

Purpose:

IZMAX1 finds the index of the first vector element of maximum absolute value.

Based on IZAMAX from Level 1 BLAS.
The change is to use the ’genuine’ absolute value.

Parameters

N

N is INTEGER
The number of elements in the vector ZX.

ZX

ZX is COMPLEX*16 array, dimension (N)
The vector ZX. The IZMAX1 function returns the index of its first
element of maximum absolute value.

INCX

INCX is INTEGER
The spacing between successive values of ZX. INCX >= 1.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Contributors:

Nick Higham for use with ZLACON.

Author

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