# Proposed update for the printFloat code of print.cpp

**URL:** <https://forum.arduino.cc/t/proposed-update-for-the-printfloat-code-of-print-cpp/162240>\
**Category:** Libraries\
**Created:** [May 12, 2013, 5:54pm UTC](https://forum.arduino.cc/t/proposed-update-for-the-printfloat-code-of-print-cpp/162240 "2013-05-12T17:54:51Z")\
**Posts on this page:** 3\
**Page:** 2

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**Author:** ![robtillaart](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/robtillaart/32/1098811_2.png) [@robtillaart](https://forum.arduino.cc/u/robtillaart)\
**Post date:** [December 9, 2017, 7:45pm UTC](https://forum.arduino.cc/t/proposed-update-for-the-printfloat-code-of-print-cpp/162240/21 "2017-12-09T19:45:09Z")

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@seradu  
You might need to stop all instances of the IDE before the new version is used.

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**Author:** ![dlcflv](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/dlcflv/32/1013044_2.png) [@dlcflv](https://forum.arduino.cc/u/dlcflv)\
**Post date:** [March 2, 2020, 3:10pm UTC](https://forum.arduino.cc/t/proposed-update-for-the-printfloat-code-of-print-cpp/162240/22 "2020-03-02T15:10:17Z")

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> robtillaart:  
> Checked compatibility with IDE 1.8.5 ==\> OK

I see that this topic is still there and the standard printFloat is not yet (after 7 years!) supporting exponential notation.  
Anyway, I tried your code posted in replay #17 with the example posted in replay #10, and I get the error:  
'SCI' was not declared in this scope  
If I use the definition suggested in replay #2, I get the error:  
no matching function for call to 'HardwareSerial::println(float&, int, int)'  
Where is the trick?  
I’m using IDE 1.8.12 and I tested the code on an Arduino Uno.  
Thank you for your suggestions

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**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\
**Post date:** [May 6, 2021, 12:09pm UTC](https://forum.arduino.cc/t/proposed-update-for-the-printfloat-code-of-print-cpp/162240/23 "2021-05-06T12:09:44Z")

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Closed on May 6, 2021, 12:09pm UTC



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