[数值计算] [已解决]批处理命令set /a 小数点怎么运算？求方式求原理

@echo off&setlocal enabledelayedexpansion
set "k=00000000"
set a=0.32
set b=0.002
for %%a in (a b) do (
    set "len_%%a="
    if "!%%a:*.=!" neq "!%%a!" (
       set .%%a=!%%a:*.=!
       for /l %%i in (9 -1 1) do if "!.%%a:~%%i!" == "" set "len_%%a=%%i"
    )
    for /f "tokens=* delims=0." %%i in ("!%%a:.=!") do set "%%a=%%i"
)
set /a len=len_a+len_b,n=a*b
if !len! neq 0 for %%i in (!len!) do (
   set n=!k!!n!
   for /f "tokens=* delims=0" %%j in ("!n:~,-%%i!.!n:~-%%i!") do set "n=%%j"
   if "!n:~,1!" == "." set n=0!n!
)
echo !n!
pause
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set aa=abcde
set aa=%aa:~,2%F%aa:~2%
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