1// { dg-do compile }
2
3typedef enum { CLASS_IN = 1, CLASS_OUT = -1 } FERGUSON_KEY_CLASS, BEZIER_KEY_CLASS;
4typedef class flag_interface { } VECT3DF_SIMPLE;
5typedef struct vect3df {
6    float x,y,z;
7} VECT3DF, VECT;
8typedef struct vect4df : public vect3df {
9    float w;
10} VECT4DF, WVECT;
11typedef class llist_item { } ANIM_KEY;
12typedef class anim_track : public flag_interface, public llist_item { } ANIM_KEY_BEZ;
13typedef class anim_track_bezier : public anim_track { } ANIM_KEY_BEZ_WVECT;
14typedef class anim_track_bez_wvect : public anim_track_bezier {
15    WVECT * tangent(int kn, BEZIER_KEY_CLASS key_class, WVECT *p_tn);
16} ANIM_TRACK_BEZ_WVECT;
17WVECT * anim_track_bez_wvect::tangent(int kn, BEZIER_KEY_CLASS key_class, WVECT *p_tn)
18{
19  float bias,continuity,tension,tn1,bp1;
20  WVECT *p_p0,*p_p1,*p_p2,         t1,         g1,g2,g3;
21  g1.x = (p_p1->x - p_p0->x)*bp1;
22  g1.y = (p_p1->y - p_p0->y)*bp1;
23  g1.z = (p_p1->z - p_p0->z)*bp1;
24  g1.w = (p_p1->w - p_p0->w)*bp1;
25  bp1 = (0.5f + key_class*0.5f*continuity);
26  p_tn->x = (g1.x + g3.x*bp1)*tn1;
27  p_tn->y = (g1.y + g3.y*bp1)*tn1;
28  p_tn->z = (g1.z + g3.z*bp1)*tn1;
29  p_tn->w = (g1.w + g3.w*bp1)*tn1;
30}
31