# Swapping The exchange functions allow two vectors of the same type to exchange coordinate values. Function for **BgcVector3FP32**: ```c inline void bgc_vector3_swap_fp32(BgcVector3FP32* vector1, BgcVector3FP32* vector2); ``` Function for **BgcVector3FP32**: ```c inline void bgc_vector3_swap_fp64(BgcVector3FP64* vector1, BgcVector3FP64* vector2); ``` The **vector1** and **vector2** parameters must not be invalid pointers. The NULL (0) value is also considered invalid. Vector **vector1** after calling this function will have the coordinate values that vector **vector3** had before calling the function. And vector **vector3** after calling this function will have the same coordinate values that vector **vector1** had before calling the function. Example of use: ```c #include #include int main() { BgcVector3FP32 my_vector1, my_vector2; bgc_vector3_set_values_fp32(-2, 7, 5, &my_vector1); bgc_vector3_set_values_fp32(10, -1, -3, &my_vector2); bgc_vector3_swap_fp32(&my_vector1, &my_vector2); printf("Vector #1: x1 = %f, x2 = %f, x3 = %f\n", my_vector1.x1, my_vector1.x2, my_vector1.x3); printf("Vector #2: x1 = %f, x2 = %f, x3 = %f\n", my_vector2.x1, my_vector2.x2, my_vector2.x3); return 0; } ``` Result: ``` Vector #1: x1 = 10.000000, x2 = -1.000000, x3 = -3.000000 Vector #2: x1 = -2.000000, x2 = 7.000000, x3 = 5.000000 ``` [Documentation](../intro-eng.md) / [3D vectors](../vector3-eng.md)