58 lines
1.5 KiB
Markdown
58 lines
1.5 KiB
Markdown
# Swapping
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[Ðóññêàÿ âåðñèÿ / Russian version](swap-rus.md)
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The exchange functions allow two vectors of the same type to exchange coordinate
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values.
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Function for **BGC_FP32_Vector3**:
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```c
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inline void bgc_fp32_vector3_swap(BGC_FP32_Vector3* const vector1, BGC_FP32_Vector3* const vector2);
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```
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Function for **BGC_FP64_Vector3**:
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```c
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inline void bgc_fp64_vector3_swap(BGC_FP64_Vector3* const vector1, BGC_FP64_Vector3* const vector2);
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```
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The **vector1** and **vector2** parameters must be valid pointers.
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The NULL (0) value is considered invalid.
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Vector **vector1** after calling this function will have the coordinate values
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that vector **vector3** had before calling the function.
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And vector **vector3** after calling this function will have the same coordinate
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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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BGC_FP32_Vector3 my_vector1, my_vector2;
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bgc_fp32_vector3_set_values(&my_vector1, -2, 7, 5);
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bgc_fp32_vector3_set_values(&my_vector2, 10, -1, -3);
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bgc_fp32_vector3_swap(&my_vector1, &my_vector2);
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printf("Vector #1: x = %f, y = %f, z = %f\n", my_vector1.x, my_vector1.y, my_vector1.z);
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printf("Vector #2: x = %f, y = %f, z = %f\n", my_vector2.x, my_vector2.y, my_vector2.z);
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return 0;
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}
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```
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Result:
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```
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Vector #1: x = 10.000000, y = -1.000000, z = -3.000000
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Vector #2: x = -2.000000, y = 7.000000, z = 5.000000
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```
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[Documentation](../intro-eng.md) / [3D vectors](../vector3-eng.md)
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