Man page - iamax(3)

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Manual

iamax

NAME
SYNOPSIS
Functions
Detailed Description
Function Documentation
integer function icamax (integer n, complex, dimension(*) cx, integer incx)
integer function idamax (integer n, double precision, dimension(*) dx,integer incx)
integer function isamax (integer n, real, dimension(*) sx, integer incx)
integer function izamax (integer n, complex*16, dimension(*) zx, integerincx)
Author

NAME

iamax - iamax: argmax_i | real( x_i ) | + | imag( x_i ) |

SYNOPSIS

Functions

integer function icamax (n, cx, incx)
ICAMAX

integer function idamax (n, dx, incx)
IDAMAX

integer function isamax (n, sx, incx)
ISAMAX

integer function izamax (n, zx, incx)
IZAMAX

Detailed Description

Function Documentation

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

ICAMAX

Purpose:

ICAMAX finds the index of the first element having maximum |Re(.)| + |Im(.)|

Parameters

N

N is INTEGER
number of elements in input vector(s)

CX

CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

INCX is INTEGER
storage spacing between elements of CX

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

jack dongarra, linpack, 3/11/78.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)

integer function idamax (integer n, double precision, dimension(*) dx,integer incx)

IDAMAX

Purpose:

IDAMAX finds the index of the first element having maximum absolute value.

Parameters

N

N is INTEGER
number of elements in input vector(s)

DX

DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

INCX is INTEGER
storage spacing between elements of DX

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

jack dongarra, linpack, 3/11/78.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)

integer function isamax (integer n, real, dimension(*) sx, integer incx)

ISAMAX

Purpose:

ISAMAX finds the index of the first element having maximum absolute value.

Parameters

N

N is INTEGER
number of elements in input vector(s)

SX

SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

INCX is INTEGER
storage spacing between elements of SX

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

jack dongarra, linpack, 3/11/78.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)

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

IZAMAX

Purpose:

IZAMAX finds the index of the first element having maximum |Re(.)| + |Im(.)|

Parameters

N

N is INTEGER
number of elements in input vector(s)

ZX

ZX is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

INCX is INTEGER
storage spacing between elements of ZX

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

jack dongarra, 1/15/85.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)

Author

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