27     float x, y, z;  member
31     float x, y, z, w;  member
35 static inline void initVec3(struct Vec3 *v, float x, float y, float z) {  in initVec3()  argument
38     v->z = z;  in initVec3()
44     v->z += w->z;  in vec3Add()
50     v->z -= w->z;  in vec3Sub()
56     v->z *= c;  in vec3ScalarMul()
60     return v->x * w->x + v->y * w->y + v->z * w->z;  in vec3Dot()
75     v->z *= invNorm;  in vec3Normalize()
79     u->x = v->y * w->z - v->z * w->y;  in vec3Cross()
80     u->y = v->z * w->x - v->x * w->z;  in vec3Cross()
81     u->z = v->x * w->y - v->y * w->x;  in vec3Cross()
84 static inline void initVec4(struct Vec4 *v, float x, float y, float z, float w) {  in initVec4()  argument
87     v->z = z;  in initVec4()