Translating a C Type to Delphi Type.

I have a trouble to translate this type to Delphi. It seem not to working peoperly.
Anyone please help me.

typedef struct {
  unsigned char type;
  union {
    double Double;
    float Float;
    int Int;
    long Long;
    STRING *Str;
#if VERSION_10X > 45
    COMPLEX Complex;
#ifdef VISSIM_H
    struct sig_vec FAR* v;
    MATRIX *m;
    SCALED_INT scaledInt;
  } u;
  struct node_info* n; /* For Version 3.0 */
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 PSig_Vec = ^TSig_Vec;
  PMatrix = ^TMatrix;
  PNodeInfo = ^TModeInfo;

   tUnion1 = record
      case byte of
         0: (dbl:Double);
         1: (flt: Single);
         2: (int:Word);
         3: (long: Integer);
         4: (str:  PChar);
         5: (cmpl: TComplex);
         6: (v:  PSig_Vec);
         7: (m: PMatrix);
         8: (scaledInt: TScaledInt);

   TSIGNAL = packed record
      tp: Byte;
      u: tUnion1;
     n: TModeInfo;

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