45 lines
1.3 KiB
Markdown
45 lines
1.3 KiB
Markdown
# Swapping
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The exchange functions allow two vectors of the same type to exchange coordinate values.
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Function for **BgcVector2FP32**:
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```c
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inline void bgc_vector2_swap_fp32(BgcVector2FP32* vector1, BgcVector2FP32* vector2);
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```
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Function for **BgcVector2FP32**:
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```c
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inline void bgc_vector2_swap_fp64(BgcVector2FP64* vector1, BgcVector2FP64* vector2);
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```
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The **vector1** and **vector2** parameters must not be invalid pointers. The NULL (0) value is also considered invalid.
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Vector **vector1** after calling this function will have the coordinate values that vector **vector2** had before calling the function.
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And vector **vector2** after calling this function will have the same coordinate values that vector **vector1** had before calling the function.
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Example of use:
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```c
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#include <stdio.h>
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#include <basic-geometry.h>
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int main()
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{
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BgcVector2FP32 my_vector1, my_vector2;
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bgc_vector2_set_values_fp32(-2, 7, &my_vector1);
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bgc_vector2_set_values_fp32(10, -1, &my_vector2);
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bgc_vector2_swap_fp32(&my_vector1, &my_vector2);
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printf("Vector #1: x1 = %f, x2 = %f\n", my_vector1.x1, my_vector1.x2);
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printf("Vector #2: x1 = %f, x2 = %f\n", my_vector2.x1, my_vector2.x2);
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return 0;
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}
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```
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[Documentation](../intro-eng.md) / [2D vectors](../vector2-eng.md)
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