verilog运算符及表达式

基本运算符：+ - * / %
        位运算符：~ & | ^ ^~
        逻辑运算符：&& || !
&#160; &#160; &#160; &#160; 关系运算符：< > <= >=
&#160; &#160; &#160; &#160; 等式运算符：== != (不管x、z，结果可能是不定值)
&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; === !==(对参数的x、z都进行比较)
&#160; &#160; &#160; &#160; 移位运算符：<< >>
&#160; &#160; &#160; &#160; 位拼接运算符：{ }，将几个信号拼接起来，例如{a,b[3:0],w,3'b100}
&#160; &#160; &#160; &#160; 缩减运算符：C =&B;C =|B;C =^B;
&#160; &#160; &#160; &#160; 优先级别：和c语言差不多，加括号
&#160; &#160; 赋值语句：
&#160; &#160; &#160; &#160; 1)非阻塞赋值方式(b <= a)
&#160; &#160; &#160; &#160; &#160; &#160; a.块结束才完成赋值
&#160; &#160; &#160; &#160; &#160; &#160; b.b的值不是立刻就改变的
&#160; &#160; &#160; &#160; &#160; &#160; c.在可综合的模块中常用
&#160; &#160; &#160; &#160; 2)阻塞赋值方式(b = a)
&#160; &#160; &#160; &#160; &#160; &#160; a.赋值语句执行完成后，块才结束
&#160; &#160; &#160; &#160; &#160; &#160; b.b的值在赋值语句执行后立刻改变
&#160; &#160; &#160; &#160; &#160; &#160; c.可能会产生意想不到的结果
&#160; &#160; &#160; &#160; 简单理解：
&#160; &#160; &#160; &#160; &#160; &#160; 非阻塞赋值用了多个触发器，每次时钟到达，所有触发器都触发一次
&#160; &#160; &#160; &#160; &#160; &#160; 阻塞赋值连到同一个触发器上，时钟到达，导致所有寄存器被赋值
————————————————

verilog运算符及表达式