uint8_t vector_magnitude(expression **result, expression *source, bool persistent)
uint8_t vector_cross_product(expression **result, expression *source_1, expression *source_2, bool persistent)
uint8_t vector_triple_product(expression **result, expression *source_1, expression *source_2, expression *source_3, bool persistent)
uint8_t vector_angle(expression **result, expression *source_1, expression *source_2, bool persistent)
uint8_t vector_dot_product(expression **result, expression *source_1, expression *source_2, bool persistent)
uint8_t vector_normalized(expression **result, expression *source, expression *magnitude, bool persistent)