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(g-wrap.info)Function for object comparisons

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Function for object comparisons
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The function for checking the equality of two objects should have a
declaration like
     int EQUAL_FN_NAME(TYPE* OBJ1, TYPE* OBJ2);
It should return 0 for false (not equal), and 1 for true (equal).

Here is an example from the matrix object type:
     int MAT_equal(MAT *m1, MAT *m2) {
       int i, j;
     
       if ( !m1 || !m2 )                           { return ( m1 == m2 ); }
       if ( ! (m1->m == m2->m && m1->n == m2->n) ) { return 0; }
       for ( i = 0; i < m1->m; i++ ) {
         for ( j = 0; j < m1->n; j++ ) {
           if ( m1->me[i][j] != m2->me[i][j] ) { return 0; }
         }
       }
       return 1;
     }