terse

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@echo off
setlocal enabledelayedexpansion
for %%a in (5 -5) do (
    for %%b in (3 -3) do (
        set/a "a=%%a-%%b,b=%%b-%%a,a=(a ^ (a >> 31)) - (a >> 31)"
        if !a! equ !b!  echo a=%%a b=%%b
    )
)
pause
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terse

回复 6# netdzb
这是位运算

set x=-5
set/a "y=x >> 31, x=(x ^ y) - y"
echo;%x%
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terse

回复 8# netdzb
”^“ 异或运算符  “>>” 右移
set /a 了解一下