# Libcanard v0 about float16 to float

**URL:** <https://forum.opencyphal.org/t/libcanard-v0-about-float16-to-float/1169>\
**Category:** Libcanard\
**Created:** [March 29, 2021, 9:43am UTC](https://forum.opencyphal.org/t/libcanard-v0-about-float16-to-float/1169 "2021-03-29T09:43:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![newcomer](https://forum.opencyphal.org/letter_avatar_proxy/v4/letter/n/e5b9ba/32.png) [@newcomer](https://forum.opencyphal.org/u/newcomer)\
**Post date:** [March 29, 2021, 9:43am UTC](https://forum.opencyphal.org/t/libcanard-v0-about-float16-to-float/1169/1 "2021-03-29T09:43:02Z")

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1. When i use static\_air\_temperature in RawAirData,I find that the fractional part of the temperature always varies at.0,.25,.50, and.75,just like :

static\_air\_temperature: 320.0000  
static\_air\_temperature: 320.2500  
static\_air\_temperature: 320.5000  
static\_air\_temperature: 320.7500

 ![image](https://forum.opencyphal.org/uploads/default/original/1X/5c82cb4d5fbd7389e79e920b865e1527039f41a4.png)

1. I find that the problem is canardConvertFloat16ToNativeFloat, this function seems to cause the above problem .  
Has anyone come across it?

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**Author:** ![pavel.kirienko](https://forum.opencyphal.org/user_avatar/forum.opencyphal.org/pavel.kirienko/32/9_2.png) [@pavel.kirienko](https://forum.opencyphal.org/u/pavel.kirienko)\
**Post date:** [March 29, 2021, 9:48am UTC](https://forum.opencyphal.org/t/libcanard-v0-about-float16-to-float/1169/2 "2021-03-29T09:48:00Z")

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This is not a problem, you are just witnessing the normal quantization effects of floating point numbers. If you need higher resolution, use float32.

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<div class="post-metadata">

**Author:** ![newcomer](https://forum.opencyphal.org/letter_avatar_proxy/v4/letter/n/e5b9ba/32.png) [@newcomer](https://forum.opencyphal.org/u/newcomer)\
**Post date:** [March 29, 2021, 9:51am UTC](https://forum.opencyphal.org/t/libcanard-v0-about-float16-to-float/1169/3 "2021-03-29T09:51:38Z")

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Got it .Thanks!