enum类型的变量,赋值时只能用枚举项。 //状态机 typedef enum logic [1:0] { STATE_0, STATE_1, STATE_2 } state_t; state_t state, state_nxt; always_ff @(posedge clk) begin if (~resetn) begin // state <= '0;//此处是枚举类型,会出错 state <= state_t'(0);//state_t'(0)此处...
```systemverilog typedefenumlogic[1:0]{RED,GREEN,BLUE}my_color;```这将创建一个名为`my_color`的新枚举类型，它包含了三种颜色。通过使用typedef，你可以使代码更加清晰和易于理解，同时提供更高的抽象级别，使得代码更具可维护性。这对于SystemVerilog中定义复杂数据结构或自定义寄存器映射等情况特别有用。
typedef enum logic [2:0] { RED = 3'b000, GREEN = 3'b001, BLUE = 3'b010, YELLOW = 3'b011 } color_t; 这个定义定义了一个名为color_t的枚举类型,其中包括四个常量值:RED、GREEN、BLUE和YELLOW。每个常量值都用3位逻辑型表示。可以使用color_t类型来定义枚举变量。例如: color_t my_color; 这...
typedef enum {NO, YES} boolean; boolean myvar1, myvar2; // user-defned type 等价于 enum {NO, YES} myvar1,myvar2; 下面是一个简单的例子: module tdef; typedef integer unsigned u_integer; typedef enum {RED, GREEN, BLUE} rgb; typedef bit [7:0] ubyte; u_integer uI = 32'h face...
enum mips_special_regs { gp(28), fp(30), sp(29), ra(31); private final int register; mips_special_regs(int r) { register = r; } public int reg() { return register; } } … int n = mips_special_regs.fp.reg(); As noted inSection 3.5.2, Pascal and C do not allow the ...
typedef enum {NO, YES} boolean; boolean myvar1, myvar2; // user-defned type 等价于 enum {NO, YES} myvar1,myvar2; 下面是一个简单的例子: module tdef; typedef integer unsigned u_integer; typedef enum {RED, GREEN, BLUE} rgb; typedef bit [7:0] ubyte; u_integer uI = 32'h face...
可以用typedef声明新的类型名来代替已有的类型名。 实例1： #include<stdio.h> #include<iostream> ...
typedefdata_type type_name[range]; Example moduletb;typedefshortintunsignedu_shorti;typedefenum{RED,YELLOW,GREEN}e_light;typedefbit[7:0]ubyte;initialbeginu_shorti data=32'hface_cafe;e_light light=GREEN;ubyte cnt=8'hFF;$display("light=%s data=0x%0h cnt=%0d",light.name(),data,cnt);end...
moduletb;typedefshortintunsignedu_shorti;typedefenum{RED, YELLOW, GREEN} e_light;typedefbit[7:0] ubyte;initialbeginu_shorti data =32'hface_cafe; e_light light = GREEN; ubyte cnt =8'hFF;$display("light=%s data=0x%0h cnt=%0d", light.name(), data, cnt);endendmodule ...
typedef enum { JSON, XML, Atom, RSS } FormatType; I would like to build a function that converts the numeric value of the typedef to a string. For example, if the message [self toString:JSON] was sent; it would return 'JSON'. The function would look something like this: -(NSStri...