◆ vec_diff()

void vec_diff	(	struct vector *	vdest,
		const struct vector	v1,
		const struct vector	v2
	)

Returns the difference of two vectors in the first parameter. $\vec{vdest} = \vec{v1} - \vec{v2}$

struct vector vdest;

vec_diff(&vdest, v1,v2);

Parameters

[out]	vdest	Difference vector $\vec{vdest} = \vec{v1}-\vec{v2}$ .
[in]	v1	vector.
[in]	v2	vector.

                                                                                   {
 
   vdest->x=v1.x-v2.x;
   vdest->y=v1.y-v2.y;
   vdest->z=v1.z-v2.z;
 
 }