#include "f2c.h"

integer icamax_(integer *n, complex *cx, integer *incx)

{

    /* System generated locals */

    integer ret_val, i__1, i__2;

    real r__1, r__2;

    /* Builtin functions */

    double r_imag(complex *);

    /* Local variables */

    static real smax;

    static integer i, ix;

/*     finds the index of element having max. absolute value.   

       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(*)   

   Parameter adjustments   

       Function Body */

#define CX(I) cx[(I)-1]

    ret_val = 0;

    if (*n < 1 || *incx <= 0) {

	return ret_val;

    }

    ret_val = 1;

    if (*n == 1) {

	return ret_val;

    }

    if (*incx == 1) {

	goto L20;

    }

/*        code for increment not equal to 1 */

    ix = 1;

    smax = (r__1 = CX(1).r, dabs(r__1)) + (r__2 = r_imag(&CX(1)), dabs(r__2));

    ix += *incx;

    i__1 = *n;

    for (i = 2; i <= *n; ++i) {

	i__2 = ix;

	if ((r__1 = CX(ix).r, dabs(r__1)) + (r__2 = r_imag(&CX(ix)), dabs(

		r__2)) <= smax) {

	    goto L5;

	}

	ret_val = i;

	i__2 = ix;

	smax = (r__1 = CX(ix).r, dabs(r__1)) + (r__2 = r_imag(&CX(ix)), 

		dabs(r__2));

L5:

	ix += *incx;

/* L10: */

    }

    return ret_val;

/*        code for increment equal to 1 */

L20:

    smax = (r__1 = CX(1).r, dabs(r__1)) + (r__2 = r_imag(&CX(1)), dabs(r__2));

    i__1 = *n;

    for (i = 2; i <= *n; ++i) {

	i__2 = i;

	if ((r__1 = CX(i).r, dabs(r__1)) + (r__2 = r_imag(&CX(i)), dabs(

		r__2)) <= smax) {

	    goto L30;

	}

	ret_val = i;

	i__2 = i;

	smax = (r__1 = CX(i).r, dabs(r__1)) + (r__2 = r_imag(&CX(i)), dabs(

		r__2));

L30:

	;

    }

    return ret_val;

} /* icamax_ */