使用sprint而不包括浮点库代码

我一直认为程序中未使用的部分在项目-gt；构建设置-gt；keil 8051 & gt；链接器中，“删除未使用的段”选项设置为true。
鲍勃



     以下为原文
  I always thought that unused parts of a program are optimized-out when in Project -> Build settings -> Keil 8051 -> Linker the option "Remove unused Segments" is set to true.
     
    Bob

这是一个新的转折点。我注释了所有的SaveTFF调用，看看FP例程实际使用了多少空间。代码大小下降了大约1K，但我注意到在地图文件中，FP模块仍在链接。唯一使用FP的其他地方是ADC，它具有使用浮点的两个功能，但是这些功能在不使用时被优化。通过交叉引用LST和MAP文件来验证，LST文件中的FP例程调用的所有发生在显示在MAP文件中的函数中。此外，在地图文件的顶部附近，它陈述了以下内容：“内存模型：浮点运算大”。
这里是另一个拷贝和粘贴从地图文件：
公共符号模块：.DP8051 KEILY903发布（项目）OMF（LCD）
值类类型公共符号名
事业单位
…
01000 243H代码？C？FCASTC
01000？C？FCASTI
01000？C？FCASTL
01000 1C2H代码？C？FPCMP
代码？C？FPCMP3
01000 123H代码？C？FPDI
01000？C？FPGETOPN2
010001AH代码？C？FPMUL
01000 2E3H代码？C？FPNA结果
01000 2EDH代码？C？贫困流
01000 2C5H代码？C？砰砰声
01000 2D9H代码？C？FPROULT2
01000 2EAH代码？C？流下流动
…



     以下为原文
   Here's a new twist.  I commented out all of my sprintf calls to see how much space the FP routines were actually using.  The code size dropped by about 1k, but I noticed in the MAP file that the FP modules were still being linked.  The only other place that uses any FP is the ADC which has two functions that use floats, but those functions are optimized out as they are not being used.  I verified by cross referencing the LST and MAP files that all occurences of a FP routine call in the LST file were in functions that were shown as being deleted in the MAP file.  Also, right near the top of the MAP file it states the following: "MEMORY MODEL: LARGE WITH FLOATING POINT ARITHMETIC".
     
    Here are another copy and paste from the MAP file:
     PUBLIC SYMBOLS OF MODULE:  .DP8051_Keil_903Release(project).omf (LCD)
          VALUE       CLASS    TYPE      PUBLIC SYMBOL NAME
          =================================================
         ...
          01000243H   CODE     ---       ?C?FCASTC
          0100023EH   CODE     ---       ?C?FCASTI
          01000239H   CODE     ---       ?C?FCASTL
          010001C2H   CODE     ---       ?C?FPCMP
          010001C0H   CODE     ---       ?C?FPCMP3
          01000123H   CODE     ---       ?C?FPDIV
          010002AEH   CODE     ---       ?C?FPGETOPN2
          0100001AH   CODE     ---       ?C?FPMUL
          010002E3H   CODE     ---       ?C?FPNANRESULT
          010002EDH   CODE     ---       ?C?FPOVERFLOW
          010002C5H   CODE     ---       ?C?FPRESULT
          010002D9H   CODE     ---       ?C?FPRESULT2
          010002EAH   CODE     ---       ?C?FPUNDERFLOW
           ...

我刚刚创建了一个新的空项目。地图文件中没有浮动。当我插入一个浮点并给它分配一个值时，我得到了与.map文件中一样的标题，结果文件只是代码中的12位。
鲍勃



     以下为原文
  I just created a new empty project. There was no float in the map-file. When I inserted a float and assigned it a value, I got the same header as you in the .Map-file, the resulting file was just 12 bits larger in code.
     
    Bob

我尝试了NoDebug库链接器指令，然后添加了C51 LIB，但由于ADC API中的FP使用，它不会链接。我猜想链接发生在未使用段的优化和删除之前。如果优化被扩展到库例程以及API，那就太好了。看起来无论我是否使用FP程序，我都被困在FP程序中。还有人有这个问题的经验吗？



     以下为原文
   I tried the NODEFAULTLIBRARY linker directive and then added the C51L.LIB, but it wouldn't link because of the FP usage in the ADC API.  I guess the linking happens prior to the optimization and deletion of unused segments.  It would be nice if that optimization was extended to the library routines as well as the APIs.  It looks like I'm stuck with the FP routines whether I use them or not.  Anyone else have any experience with this issue?