user82675: I have a project plan in which there are calculations that require high precision, which later will have calculations with numbers after commas such as 245.5431657288. from some of the information that I read to make the project a success it must use 32 bytes, initially I wanted to use arduino due, but for some reasons I was more interested in using STM32 but my knowledge of STM32 is not much, especially in terms of the level of precision calculation, therefore I ask is STM32 suitable for my project? I hope my question can be understood, thank you.

user4143: The hardware makes no difference to the accuracy of calculations. That is purely down to the software - whether you use single or double precision floats, whether the compiler flags disable double precision to save space (as some 8 bit configurations do), etc.
The choice of hardware only affects the efficiency of the processing at different precisions, such as if there is an FPU, or what precision the FPU can operate at (using precisions outside the range of the FPU will only affect speed not precision).
Both the stm32 and due are ARM based MCUs, so any differences will be down to what additions there are in any specific chip (such as FPU).

82675: <p>I have a project plan in which there are calculations that require high precision, which later will have calculations with numbers after commas such as 245.5431657288. from some of the information that I read to make the project a success it must use 32 bytes, initially I wanted to use arduino due, but for some reasons I was more interested in using STM32 but my knowledge of STM32 is not much, especially in terms of the level of precision calculation, therefore I ask is STM32 suitable for my project? I hope my question can be understood, thank you.</p>
 4143: <p>The hardware makes no difference to the accuracy of calculations. That is purely down to the software - whether you use single or double precision floats, whether the compiler flags disable double precision to save space (as some 8 bit configurations do), etc.</p>
<p>The choice of hardware only affects the efficiency of the processing at different precisions, such as if there is an FPU, or what precision the FPU can operate at (using precisions outside the range of the FPU will only affect speed not precision).</p>
<p>Both the stm32 and due are ARM based MCUs, so any differences will be down to what additions there are in any specific chip (such as FPU).</p>
