vec_scale()

vec_scale	(	struct vector *	v,
		DOUBLE	d
	)

Scales the vector with a scalar. Input vector is overwritten.

Parameters

[in,out]	v	Scaled vector
[in]	d	scalar factor.

                                          {
  v->x = v->x*d;
  v->y = v->y*d;
  v->z = v->z*d;
}