14.1 Variables, Types and constants

The following types are defined in the MMX unit:

 tmmxshortint = array[0..7] of shortint;
 tmmxbyte = array[0..7] of byte;
 tmmxword = array[0..3] of word;
 tmmxinteger = array[0..3] of integer;
 tmmxfixed = array[0..3] of fixed16;
 tmmxlongint = array[0..1] of longint;
 tmmxcardinal = array[0..1] of cardinal;
 { for the AMD 3D }
 tmmxsingle = array[0..1] of single;

And the following pointers to the above types:

 pmmxshortint = ^tmmxshortint;
 pmmxbyte = ^tmmxbyte;
 pmmxword = ^tmmxword;
 pmmxinteger = ^tmmxinteger;
 pmmxfixed = ^tmmxfixed;
 pmmxlongint = ^tmmxlongint;
 pmmxcardinal = ^tmmxcardinal;
 { for the AMD 3D }
 pmmxsingle = ^tmmxsingle;

The following initialized constants allow you to determine if the computer has MMX extensions. They are set correctly in the unit’s initialization code.

 is_mmx_cpu : boolean = false;
 is_amd_3d_cpu : boolean = false;

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