3.8.3 Nested Arrays

• Data type row3_t is defined to be an array of three integers.

 

3.8.4 Fixed-Size Arrays

• This code contains a number of clever optimizations. It removes the integer index j and converts all array references to pointer dereferences.
• This involves (1) generating a pointer, which we have named Aptr, that points to successive elements in row i of A,

  (2) generating a pointer, which we have named Bptr, that points to successive elements in column k of B,

  (3) generating a pointer, which we have named Bend, that equals the value Bptr will have when it is time to terminate the loop.

   

 

3.9 Heterogeneous Data Structures

3.9.1 Structures

• The C struct declaration creates a data type that groups objects of possibly different types into a single object.