The command MATADD adds the two matrices contained in the arrays matrix1 and matrix2, setting the result in the array sum. The parameters, matrix1, matrix2 and sum, must all be arrays of the same dimensions, the same size and the same type. They can be of any number type, viz. floating point or integer (% suffix), but not string and (we must stress this point) floating point and integer arguments must not be mixed. If these conditions are not satisfied, then MATADD will break with a ‘bad parameter’ error (-15). Provided that the parameters follow this rule, the command MATADD sets all of the elements of the sum array to the sum of the respective elements of the two other arrays, matrix1 and matrix2.
100 DIM a%(10,10,80), b%(10,10,80), c%(10,10,80) 110 MATRND a%,-5 TO 5: MATSEQ b% 120 MATADD c%,a%,b%
If you run this short example program (8000 internal loops!), you will notice the extraordinary speed of MATADD which is representative of the other MAT… functions; MATSUB is almost equivalent to MATADD.