NAME

concat_matrix − multiply two matrices and return the resulting matrix

SYNOPSIS

C Syntax:

void concat_matrix(matrix1,matrix2,result);
float matrix1[4][4],matrix2[4][4],result[4][4];

FORTRAN77 Syntax:

(See Language Dependencies Below)

subroutine concat_matrix(matrix1,matrix2,result)
real matrix1(4,4),matrix2(4,4),result(4,4)

Pascal Syntax:

type three_d_xform = array[1..4][1..4] of real;

procedure concat_matrix(var matrix1,matrix2,
result:three_d_xform);

DESCRIPTION

Input Parameters

matrix1,matrix2
Two user-supplied 4x4 matrices presented in row major form.

Output Parameters

result Resulting 4x4 matrix obtained by multiplying matrix1 and matrix2 . 

Discussion

Matrix1 and matrix2 are concatenated (matrix multiplied) and the resulting matrix placed in result:

matrix1 * matrix2 → result

The three matrices need not be unique.  For instance, concat_matrix (A,A,A) is valid. 

LANGUAGE DEPENDENCIES

FORTRAN77:
A transposition of array rows and columns is required due to the manner in which FORTRAN77 stores arrays. 

SEE ALSO

concat_transformation(3G), concat_transformation(3G), flush_matrices(3G), pop_matrix(3G), push_matrix(3G), replace_matrix(3G). 

Hewlett-Packard Company  —  May 11, 2021