enum

列挙型

https://www.chipverify.com/systemverilog/systemverilog-enumeration

SystemVerilog includes a set of specialized methods to enable iterating over the values of enumerated types.

メソッド

first(), function enum first();, Returns the value of the first member of the enumeration

last(), function enum last();, Returns the value of the last member of the enumeration

next(), function enum next (int unsigned N = 1);

Returns the Nth next enumeration value starting from the current value of the given variable

prev(), function enum prev (int unsigned N = 1);

Returns the Nth previous enumeration value starting from the current value of the given variable

num(), function int num();

Returns the number of elements in the given enumeration

name(), function string name();

Returns the string representation of the given enumeration value

method

typedef enum { ... } enum_t ;

enum_t e_var ;

val = e_var.name () ;

// num = enum_t::num () ;  // error with VCS