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changeset 70:a5e8b7c9a3ad

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[project @ 1993-08-30 14:32:55 by jwe]
author jwe
date Mon, 30 Aug 1993 14:32:55 +0000
parents d2d19bd98f60
children ca37b3c9d066
files scripts/control/abcddim.m
diffstat 1 files changed, 19 insertions(+), 19 deletions(-) [+]
line wrap: on
line diff
--- a/scripts/control/abcddim.m
+++ b/scripts/control/abcddim.m
@@ -1,50 +1,50 @@
-function [n, m, p] = abcdchk (a, b, c, d)
+function [n, m, p] = abcddim (a, b, c, d)
 
-# Usage: [n, m, p] = abcdchk (a, b, c, d)
+# Usage: [n, m, p] = abcddim (a, b, c, d)
 #
 # Check for compatibility of the dimensions of the matrices defining
 # the linear system (a, b, c, d).
 #
-# returns n = number of system states, 
-#         m = number of system inputs
-#         p = number of system outputs
+# Returns n = number of system states,
+#         m = number of system inputs,
+#         p = number of system outputs.
 #
-# returns n = m = p = -1 if system is not compatible
+# Returns n = m = p = -1 if the system is not compatible.
+
+# Written by A. S. Hodel (scotte@eng.auburn.edu) August 1993
 
   if (nargin != 4)
-    error ("abcdchk: illegal number of arguments.  Need four.")
+    error ("abcddim: illegal number of arguments.  need four.")
   endif
 
-  n = -1;
-  m = -1;
-  p = -1;
+  n = m = p = -1;
 
-  [an, am] = size (a);
+  [an, am] = size(a);
   if (an != am)
-    disp ("abcdchk: a is not square");
+    fprintf (stderr, "abcddim: a is not square");
     return;
   endif
 
-  [bn, bm] = size (b);
+  [bn, bm] = size(b);
   if (bn != am)
-    disp ("abcdchk: a, b are not compatible");
+    fprintf (stderr, "abcddim: a and b are not compatible");
     return;
   endif
 
-  [cn, cm] = size (c);
+  [cn, cm] = size(c);
   if (cm != an)
-    disp ("abcdchk: a, c are not compatible");
+    fprintf (stderr, "abcddim: a and c are not compatible");
     return;
   endif
 
-  [dn, dm] = size (d);
+  [dn, dm] = size(d);
   if (cn != dn)
-    disp ("abcdchk: c, d are not compatible");
+    fprintf (stderr, "abcddim: c and d are not compatible");
     return;
   endif
 
   if (bm != dm)
-    disp ("abcdchk: b, d are not compatible");
+    fprintf (stderr, "abcddim: b and d are not compatible");
     return;
   endif