cpu()

Ecpu_type datrw::util::cpu

(

)

check for my CPU model

Check CPU model. ,.

Returns

return value indicates the CPU model found

Definition at line 73 of file bytesex.cc.

References datrw::util::IOUnion< T >::bytes, cpu_Intel, cpu_Motorola, cpu_unknown, DATRW_assert, magic(), and datrw::util::IOUnion< T >::value.

Referenced by main(), datrw::mseed::needswap(), and datrw::mseed::MiniSEEDRecord::readheader().

    {
      Ecpu_type result=cpu_unknown;
      IOUnion<int> u1,u2;
      DATRW_assert((sizeof(int) == 4),
                  "The integer memory size on this CPU differs from the"
                  "required value of 4");
      const int& intsize=sizeof(int);
      char test_seq[]="ABCD";
      // prepare sequence and reverse sequence
      for (int i=0; i<intsize; i++)
      {
        u1.bytes[i]=test_seq[i];
        u2.bytes[i]=test_seq[intsize-i-1];
      }
      // request magic number for sequence
      int magnum=magic(u1.bytes);
      // test against byte representation of sequence and reverse sequence
      if (magnum == u1.value)
      {
        result=cpu_Motorola;
      }
      else if (magnum == u2.value)
      {
        result=cpu_Intel;
      }
      return(result);
    } // cpu()

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