LAPACK 3.11.0
LAPACK: Linear Algebra PACKage

◆ izmax1()

integer function izmax1 ( integer  N,
complex*16, dimension(*)  ZX,
integer  INCX 
)

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

Download IZMAX1 + dependencies [TGZ] [ZIP] [TXT]

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