imax1(3) LAPACK imax1(3)
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, integer
incx)
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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