57 lines
1.6 KiB
Markdown
57 lines
1.6 KiB
Markdown
# Copying of component values
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[Русская версия / Russian version](copy-rus.md)
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## Function options
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```c
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inline void bgc_fp32_quaternion_copy(BGC_FP32_Quaternion* const destination, const BGC_FP32_Quaternion* const source);
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inline void bgc_fp64_quaternion_copy(BGC_FP64_Quaternion* const destination, const BGC_FP64_Quaternion* const source);
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```
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These functions allow to copy the component values of one quaternion to another quaternion.
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Each of these functions is equivalent to the following lines of code:
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```c
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destination->s = source->s;
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destination->x = source->x;
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destination->y = source->y;
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destination->z = source->z;
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```
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## Parameters
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| Parameter | Direction | Description |
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| ----------- | ---------- | -------------------------------------------------------------------------------- |
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| destination | out | A pointer to a quaternion to set component values from *source* |
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| source | in | A pointer to a quaternion which component values will be copied to *destination* |
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The *source* and *destination* parameters must be valid pointers. The NULL (0) value is also considered invalid.
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## Example
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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_Quaternion q1, q2;
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q1.s = 1.1f;
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q1.x = -2.0f;
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q1.y = 7.4f;
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q1.z = 1.8f;
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bgc_fp32_quaternion_copy(&q2, &q1);
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printf("s = %f, x = %f, y = %f, z = %f\n", q2.s, q2.x, q2.y, q2.z);
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return 0;
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}
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```
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[Documentation](../intro-eng.md) / [Quaternions](../quaternion-eng.md)
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