fix16_t
fix16_vector3_angle(const fix16_vector3_t *v0, const fix16_vector3_t *v1)
{
fix16_t v0_length;
v0_length = fix16_vector3_length(v0);
fix16_t v1_length;
v1_length = fix16_vector3_length(v1);
return fix16_acos(fix16_div(fix16_vector3_dot(v0, v1),
fix16_mul(v0_length, v1_length)));
}
Fix16 acos() { return Fix16(fix16_acos(value)); }
