stm8l051f3可以做浮动操作?

我有一个问题是，是否可以做/计算浮动操作，...
那是什么 ？
还没有ST STM8william hill官网 吗？
从内存来看，我认为没有STM8有FPU，所以你需要使用浮点仿真。这需要一个合适的库，通常意味着几千字节。



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I have a question as to whether  can do/calculate the floating operation or not, ...
What is that ?
Doesn't have ST a STM8 forum anymore ?
From memory, I think no STM8 has a FPU, so you would need to use floating point emulation. That requires an appropriate library, and usually means a few kilobytes more.

大多数微控制器都可以在软件中做浮点运算，甚至是40年前的8位微控制器。
如果空间不足，则库可能超出设备中的程序空间。使用更大的设备，或考虑使用其他方法，如定点和缩放。
也许系统支持ftoa（）
http://www.ars-informatica.ca/eclectic/ftoa-convert-a-floating-point-number-to-a-character-array-on-the-arduino/
 或者您可以缩放到整数并打印
float f = 12.345f;
int i =（int）（f * 1000.0f）;
printf（'％d。％03d  n'，i / 1000，i％1000）; //为正值



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Most micro-controllers can do floating point in software, even the 8-bit ones from 40 year ago.
If it runs out of space then likely the library exceeds the program space in your device. Use a bigger device, or consider using other methods, like fixed point and scaling.
Perhaps the system supports ftoa()

http://www.ars-informatica.ca/eclectic/ftoa-convert-a-floating-point-number-to-a-character-array-on-the-arduino/
Or you can scale to an integer and print
float f = 12.345f;
int i = (int)(f * 1000.0f);
printf('%d.%03dn', i/1000, i%1000); // for positive values

您好，AvaTar，
感谢快速回复，
我需要更多关于您的意见的信息，请帮助我告诉我并使用我的项目，
1.如何在库中使用浮点仿真？也许需要通过详细的例子来了解程序，
能否请您详细提供相关信息？
我正在使用IAR嵌入式工作台进行编译，
感谢你的支持，
谢谢。



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Hello, AvaTar,
thankful for rapid reply,
I need more information as to your opinion, please help to let me know it and to use for my project,
1. how can I use floating point emulation with library ? maybe need to know the procedure with detailed example,
Could you please kindly help to provide the information in detail ?
I am using IAR embedded workbench for compile,
thankful for your support in advance,
thanks.

我需要更多关于您的意见的信息，请帮助我告诉我并用于我的项目，......
我想我无法帮助你，我不使用STM8，也没有STM8设备的IDE。
或者你使用另一个MCU，并错误拼写它的名字？
对于IAR，我会参考相当广泛的程序帮助/文档。



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I need more information as to your opinion, please help to let me know it and to use for my project, ...
I think I can't help you, I don't work with the STM8, nor do I have an IDE for STM8 devices.
Or do you use another  MCU, and mis-spelled it's name ?
For IAR, I would consult the quite extensive program help / documentation.

STM8的所有编译器都带有软件浮点实现。它们都支持C float数据类型，但它们都不支持double或long double（参见
http://www.colecovision.eu/stm8/compilers.shtml
 ）.IAR往往是标准合规性和实现完整性的更好的编译器之一，所以你不应该在功能上遇到任何问题。在优化速度时，IAR还具有最快的浮点实现（即获得比当前Cosmic，Raisonance或SDCC更高的Whetstone分数，再次看到
http://www.colecovision.eu/stm8/compilers.shtml
）.Philipp



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All compilers for the STM8 come with a software floating-point implementation. They all support the C float datatype, but none of them support double or long double (see
http://www.colecovision.eu/stm8/compilers.shtml
).IAR tends to be one of the better compilers when it comes to standard compliance and completeness of the implementation, so you shouldn't run into any problems functionality-wise. When optimizing for speed, IAR also has the fastest floating-point implementation (i.e. achieves higher Whetstone scores than current Cosmic, Raisonance or SDCC, see again
http://www.colecovision.eu/stm8/compilers.shtml
).Philipp