3.6.6. let - evaluate arithmetic expressions

3.6.6.1. Usage

let EXPR [EXPR ...]

3.6.6.2. Synopsis

Supported operations are in order of decreasing precedence:
X++, X--
++X, --X
+X, -X
!X, ~X
X**Y
X*Y, X/Y, X%Y
X+Y, X-Y
X<<Y, X>>Y
X<Y, X<=Y, X>=Y, X>Y
X==Y, X!=Y
X&Y
X^Y
X|Y
X&&Y
X||Y
X?Y:Z
X*=Y, X/=Y, X%=Y
X=Y, X&=Y, X|=Y, X^=Y, X+=Y, X-=Y, X<<=Y, X>>=Y