IZMAX1 (3lapack)

find the index of the element whose real part has maximum absolute value

SYNOPSIS

  INTEGER FUNCTION IZMAX1( N, CX, INCX )

      INTEGER      INCX, N

      COMPLEX*16   CX( * )

PURPOSE

  IZMAX1 finds the index of the element whose real part has maximum absolute
  value.

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

  Contributed by Nick Higham for use with ZLACON.

ARGUMENTS

  N       (input) INTEGER
          The number of elements in the vector CX.

  CX      (input) COMPLEX*16 array, dimension (N)
          The vector whose elements will be summed.

  INCX    (input) INTEGER
          The spacing between successive values of CX.  INCX >= 1.