(筆記) t_vpi_value struct (SOC) (Verilog PLI)

Abstract
寫Verilog PLI，最常遇到的就是t_vpi_value這個struct， 每次都要特別翻書，因此特別記下來。

Introduction

 typedef struct t_vpi_value {
   PLI_INT32 format; /* vpiBinStrVal,   vpiOctStrVal,
                        vpiDecStrVal,   vpiHexStrVal,
                        vpiScalarVal,   vpiIntVal,
                        vpiRealVal,     vpiStringVal,
                        vpiVectorVal,   vpiTimeVal,
                        vpiStrengthVal, vpiSuppressVal,
                        vpiObjTypeVal */
   union {
     PLI_BYTE8 *str;                     /* if any string format */
     PLI_INT32 scalar;            /* if vpiScalarVal: one of vpi0, vpi1,*/
                                  /*  vpiX, vpiZ, vpiH, vpiL, vpiDontCare*/
     PLI_INT32 integer;                  /* if vpiIntVal format */
     double real;                        /* if vpiRealVal format */
     struct t_vpi_time *time;            /* if vpiTimeVal */
     struct t_vpi_vecval *vector;        /* if vpiVectorVal */
     struct t_vpi_strengthval *strength; /* if vpiStrengthVal */
     PLI_BYTE8 *misc;                    /* not used */
   } value;
 } s_vpi_value, *p_vpi_value;