51 lines
1 KiB
Markdown
51 lines
1 KiB
Markdown
# Resetting the state of a Quaternion
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[Русская версия / Russian version](reset-rus.md)
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These functions set all parts of a quaternion to 0.
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Function for **BGC_FP32_Quaternion**:
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```c
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inline void bgc_fp32_quaternion_reset(BGC_FP32_Quaternion* const quaternion);
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```
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Function for **BGC_FP64_Quaternion**:
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```c
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inline void bgc_fp64_quaternion_reset(BGC_FP64_Quaternion* const quaternion);
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```
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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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vector->s = 0;
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vector->x = 0;
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vector->y = 0;
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vector->z = 0;
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```
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You should pass valid pointers to these functions. The NULL (0) value is also
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considered invalid.
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This function is good for setting up the initial state of a quaternion.
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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_FP64_Quaternion q;
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bgc_fp64_quaternion_reset(&q);
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printf("s = %lf, x = %lf, y = %lf, z = %lf\n", q.s, q.x, q.y, q.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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