#include "blaswrap.h"
#include "f2c.h"

/* Subroutine */ int caxpy_(integer *n, complex *ca, complex *cx, integer *
	incx, complex *cy, integer *incy)
{
    /* System generated locals */
    integer i__1, i__2, i__3, i__4;
    complex q__1, q__2;
    /* Local variables */
    static integer i__, ix, iy;
    extern doublereal scabs1_(complex *);
/*  Purpose   
    =======   
       CAXPY constant times a vector plus a vector.   
    Further Details   
    ===============   
       jack dongarra, linpack, 3/11/78.   
       modified 12/3/93, array(1) declarations changed to array(*)   
       Parameter adjustments */
    --cy;
    --cx;
    /* Function Body */
    if (*n <= 0) {
	return 0;
    }
    if (scabs1_(ca) == 0.f) {
	return 0;
    }
    if (*incx == 1 && *incy == 1) {
	goto L20;
    }
/*        code for unequal increments or equal increments   
            not equal to 1 */
    ix = 1;
    iy = 1;
    if (*incx < 0) {
	ix = (-(*n) + 1) * *incx + 1;
    }
    if (*incy < 0) {
	iy = (-(*n) + 1) * *incy + 1;
    }
    i__1 = *n;
    for (i__ = 1; i__ <= i__1; ++i__) {
	i__2 = iy;
	i__3 = iy;
	i__4 = ix;
	q__2.r = ca->r * cx[i__4].r - ca->i * cx[i__4].i, q__2.i = ca->r * cx[
		i__4].i + ca->i * cx[i__4].r;
	q__1.r = cy[i__3].r + q__2.r, q__1.i = cy[i__3].i + q__2.i;
	cy[i__2].r = q__1.r, cy[i__2].i = q__1.i;
	ix += *incx;
	iy += *incy;
/* L10: */
    }
    return 0;
/*        code for both increments equal to 1 */
L20:
    i__1 = *n;
    for (i__ = 1; i__ <= i__1; ++i__) {
	i__2 = i__;
	i__3 = i__;
	i__4 = i__;
	q__2.r = ca->r * cx[i__4].r - ca->i * cx[i__4].i, q__2.i = ca->r * cx[
		i__4].i + ca->i * cx[i__4].r;
	q__1.r = cy[i__3].r + q__2.r, q__1.i = cy[i__3].i + q__2.i;
	cy[i__2].r = q__1.r, cy[i__2].i = q__1.i;
/* L30: */
    }
    return 0;
} /* caxpy_ */