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data formats          Technical Information          data formats




Mark Williams  Company has  written C  compilers for a  number of
different computers.  Each  has a unique architecture and defines
data formats in its own way.

The following table gives the  sizes, in cchhaarrs, of the data types
as they are defined by various microprocessors.



           _i_8_0_8_6 _i_8_0_8_6
     _T_y_p_e  _S_M_A_L_L _L_A_R_G_E _Z_8_0_0_1 _Z_8_0_0_2 _6_8_0_0_0 _P_D_P_1_1  _V_A_X

     cchhaarr    1     1     1     1     1     1     1
     ddoouubbllee  8     8     8     8     8     8     8
     ffllooaatt   4     4     4     4     4     4     4
     iinntt     2     2     2     2     2     2     4
     lloonngg    4     4     4     4     4     4     4
     pointer 2     4     4     2     4     2     4
     sshhoorrtt   2     2     2     2     2     2     2


COHERENT places  some alignment restrictions on  data, which con-
form  to all  restrictions set by  the microprocessor.   Byte or-
dering is  set by  the microprocessor;  see the Lexicon  entry on
byte ordering for more information.

***** See Also *****

byte  ordering, C  language,  data types,  double, float,  memory
allocation, technical information

***** Notes *****

The COHERENT system supports Intel SMALL model only.






















COHERENT Lexicon                                           Page 1

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