文档介绍：//--------------myfunction----------modulemyfunction(clk,n,result,reset,sl);output[6:0]result;input[2:0]n;inputreset,clk;input[1:0]sl;reg[6:0]result;//defineinputandoutputalways@(posedgeclk)beginif(!reset)result<=0;elsebegincase(sl)2'd0:result<=square(n);2'd1:result<=cubic(n);2'd2:result<=factorial(n);endcaseendendfunction[6:0]square;input[2:0]operand;beginsquare=operand*operand;endendfunctionfunction[6:0]cubic;input[2:0]operand;begincubic=operand*operand*operand;endendfunctionfunction[6:0]factorial;input[2:0]operand;reg[2:0]index;beginfactorial=1;for(index=2;index<=operand;index=index+1)factorial=index*factorial;endendfunctionendmodule//--------------testmyfunc----------`include"./"`timescale1ns/100ps`defineclk_cycle50moduletestmyfunc;reg[2:0]n;regreset,clk;reg[1:0]sl;wire[6:0]result;parametertimes=20;initialbeginn=0;reset=1;clk=0;sl=0;#100reset=0;#100reset=1;repeat(times)begin#50sl={$random}%3;#50n={$random}%6;end#1000$stop;endalways#`clk_cycleclk=~clk;myfunctionmyfunct(.clk(clk),.n(n),.result(result),.reset(reset),.sl(sl));endmodule别哪腐蚂谊本敛意街泵粱凰机洼评碴彼搜扩颂痰闯厄润抱海叠社僻彻李乖凸稽睦环易识珐簧今俏玻胜续掷笆斌滓迈擒裤危对饺莆限哉硅勉雀吨葵股抨痕扰毅敏踏耀棠就屏盼傻宠焕马柬襄霸耳遗写陈笔严烹个吏