# HG changeset patch
# User John W. Eaton <jwe@octave.org>
# Date 1215813568 14400
# Node ID 4976f66d469b51185e96b2df7f1f48eefb602331
# Parent  c3d21b9b94b679db93ba863f721171f36b74f248
miscellaneous cleanup

diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/Array-d.cc
--- a/liboctave/Array-d.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/Array-d.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -139,7 +139,8 @@
 		{
 		  octave_idx_type i = 0;
 		  double *vtmp = reinterpret_cast<double *> (p);
-		  while (xisnan (vtmp[i++]) && i < ns);
+		  while (xisnan (vtmp[i++]) && i < ns)
+		    /* do nothing */;
 		  for (octave_idx_type l = 0; l < ns - i + 1; l++)
 		    vtmp[l] = vtmp[l+i-1];
 		  for (octave_idx_type l = ns - i + 1; l < ns; l++)
@@ -149,7 +150,8 @@
 		{
 		  octave_idx_type i = ns;
 		  double *vtmp = reinterpret_cast<double *> (p);
-		  while (xisnan (vtmp[--i]) && i > 0);
+		  while (xisnan (vtmp[--i]) && i > 0)
+		    /* do nothing */;
 		  for (octave_idx_type l = i; l >= 0; l--)
 		    vtmp[l-i+ns-1] = vtmp[l];
 		  for (octave_idx_type l = 0; l < ns - i - 1; l++)
@@ -199,7 +201,8 @@
 	      if (mode == ASCENDING)
 		{
 		   octave_idx_type i = 0;
-		  while (xisnan (v[i++*stride + offset]) && i < ns);
+		  while (xisnan (v[i++*stride + offset]) && i < ns)
+		    /* do nothing */;
 		  for (octave_idx_type l = 0; l < ns - i + 1; l++)
 		    v[l*stride + offset] = v[(l+i-1)*stride + offset];
 		  for (octave_idx_type l = ns - i + 1; l < ns; l++)
@@ -208,7 +211,8 @@
 	      else
 		{
 		   octave_idx_type i = ns;
-		  while (xisnan (v[--i*stride + offset]) && i > 0);
+		  while (xisnan (v[--i*stride + offset]) && i > 0)
+		    /* do nothing */;
 		  for (octave_idx_type l = i; l >= 0; l--)
 		    v[(l-i+ns-1)*stride + offset] = v[l*stride + offset];
 		  for (octave_idx_type l = 0; l < ns - i - 1; l++)
@@ -303,7 +307,8 @@
 	  if (mode == ASCENDING)
 	    {
 	      octave_idx_type i = 0;
-	      while (xisnan (v[i++*stride+offset]) && i < ns);
+	      while (xisnan (v[i++*stride+offset]) && i < ns)
+		/* do nothing */;
 	      OCTAVE_LOCAL_BUFFER (double, itmp, i - 1);
 	      for (octave_idx_type l = 0; l < i -1; l++)
 		itmp[l] = sidx(l*stride + offset);
@@ -322,7 +327,8 @@
 	  else 
 	    {
 	      octave_idx_type i = ns;
-	      while (xisnan (v[--i*stride+offset]) && i > 0);
+	      while (xisnan (v[--i*stride+offset]) && i > 0)
+		/* do nothing */;
 	      OCTAVE_LOCAL_BUFFER (double, itmp, ns - i - 1);
 	      for (octave_idx_type l = 0; l < ns - i -1; l++)
 		itmp[l] = sidx((l+i+1)*stride + offset);
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/Array-f.cc
--- a/liboctave/Array-f.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/Array-f.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -139,7 +139,8 @@
 		{
 		  octave_idx_type i = 0;
 		  float *vtmp = reinterpret_cast<float *> (p);
-		  while (xisnan (vtmp[i++]) && i < ns);
+		  while (xisnan (vtmp[i++]) && i < ns)
+		    /* do nothing */;
 		  for (octave_idx_type l = 0; l < ns - i + 1; l++)
 		    vtmp[l] = vtmp[l+i-1];
 		  for (octave_idx_type l = ns - i + 1; l < ns; l++)
@@ -149,7 +150,8 @@
 		{
 		  octave_idx_type i = ns;
 		  float *vtmp = reinterpret_cast<float *> (p);
-		  while (xisnan (vtmp[--i]) && i > 0);
+		  while (xisnan (vtmp[--i]) && i > 0)
+		    /* do nothing */;
 		  for (octave_idx_type l = i; l >= 0; l--)
 		    vtmp[l-i+ns-1] = vtmp[l];
 		  for (octave_idx_type l = 0; l < ns - i - 1; l++)
@@ -199,7 +201,8 @@
 	      if (mode == ASCENDING)
 		{
 		   octave_idx_type i = 0;
-		  while (xisnan (v[i++*stride + offset]) && i < ns);
+		  while (xisnan (v[i++*stride + offset]) && i < ns)
+		    /* do nothing */;
 		  for (octave_idx_type l = 0; l < ns - i + 1; l++)
 		    v[l*stride + offset] = v[(l+i-1)*stride + offset];
 		  for (octave_idx_type l = ns - i + 1; l < ns; l++)
@@ -208,7 +211,8 @@
 	      else
 		{
 		   octave_idx_type i = ns;
-		  while (xisnan (v[--i*stride + offset]) && i > 0);
+		  while (xisnan (v[--i*stride + offset]) && i > 0)
+		    /* do nothing */;
 		  for (octave_idx_type l = i; l >= 0; l--)
 		    v[(l-i+ns-1)*stride + offset] = v[l*stride + offset];
 		  for (octave_idx_type l = 0; l < ns - i - 1; l++)
@@ -303,7 +307,8 @@
 	  if (mode == ASCENDING)
 	    {
 	      octave_idx_type i = 0;
-	      while (xisnan (v[i++*stride+offset]) && i < ns);
+	      while (xisnan (v[i++*stride+offset]) && i < ns)
+		/* do nothing */;
 	      OCTAVE_LOCAL_BUFFER (float, itmp, i - 1);
 	      for (octave_idx_type l = 0; l < i -1; l++)
 		itmp[l] = sidx(l*stride + offset);
@@ -322,7 +327,8 @@
 	  else 
 	    {
 	      octave_idx_type i = ns;
-	      while (xisnan (v[--i*stride+offset]) && i > 0);
+	      while (xisnan (v[--i*stride+offset]) && i > 0)
+		/* do nothing */;
 	      OCTAVE_LOCAL_BUFFER (float, itmp, ns - i - 1);
 	      for (octave_idx_type l = 0; l < ns - i -1; l++)
 		itmp[l] = sidx((l+i+1)*stride + offset);
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/Array-util.cc
--- a/liboctave/Array-util.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/Array-util.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -139,7 +139,6 @@
 {
   int m = 0;
   int n = dim.length ();
-  bool retval = true;
 
   if (n == 0)
     m = 2;
@@ -151,6 +150,7 @@
 	else if (dim(i) < 1)
 	  m += 2;
     }
+
   return (m < 2);
 }
 
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/ChangeLog
--- a/liboctave/ChangeLog	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/ChangeLog	Fri Jul 11 17:59:28 2008 -0400
@@ -1,5 +1,24 @@
 2008-07-11  John W. Eaton  <jwe@octave.org>
 
+	* dDiagMatrix.cc (DiagMatrix::diag): Return empty ColumnVector if
+	number of rows or columns is 0.
+	* fDiagMatrix.cc (FloatDiagMatrix::diag): Likewise.
+
+	* Array-util.cc (is_vector): Avoid GCC warning.
+	* Array-f.cc (Array<float>::sort): Likewise.
+	* Array-d.cc (Array<double>::sort): Likewise.
+	* dbleQR.cc (QR::QR (const Matrix&, const Matrix&)): Likewise.
+	* CmplxQR.cc (ComplexQR::ComplexQR (const ComplexMatrix&, const
+	ComplexMatrix&)): Likewise.
+	* floatQR.cc (FloatQR::FloatQR (const FloatMatrix&, const
+	FloatMatrix&)): Likewise.
+	* fCmplxQR.cc (FloatComplexQR::FloatComplexQR (const
+	FloatComplexMatrix&, const FloatComplexMatrix&)): Likewise.
+	* Quad.cc (IndefQuad::do_integrate (octave_idx_type&,
+	octave_idx_type&, float&), FloatIndefQuad::do_integrate,
+	DefQuad::do_integrate octave_idx_type&, octave_idx_type&, float&,
+	FloatIndefQuad::do_integrate): Likewise.
+
 	* mx-op-defs.h (MS_BOOL_OP, SM_BOOL_OP, MM_BOOL_OP, NDS_BOOL_OP,
 	SND_BOOL_OP, NDND_BOOL_OP): Detect NaN values.
 	* Array-util.cc (gripe_nan_to_logical_conversion): New function.
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/CmplxQR.cc
--- a/liboctave/CmplxQR.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/CmplxQR.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -159,16 +159,16 @@
     }
 }
 
-ComplexQR::ComplexQR (const ComplexMatrix &q, const ComplexMatrix& r)
+ComplexQR::ComplexQR (const ComplexMatrix& q_arg, const ComplexMatrix& r_arg)
 {
-  if (q.columns () != r.rows ()) 
+  if (q_arg.columns () != r_arg.rows ()) 
     {
       (*current_liboctave_error_handler) ("QR dimensions mismatch");
       return;
     }
 
-  this->q = q;
-  this->r = r;
+  this->q = q_arg;
+  this->r = r_arg;
 }
 
 void
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/Quad.cc
--- a/liboctave/Quad.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/Quad.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -160,7 +160,7 @@
 }
 
 float
-DefQuad::do_integrate (octave_idx_type& ier, octave_idx_type& neval, float& abserr)
+DefQuad::do_integrate (octave_idx_type&, octave_idx_type&, float&)
 {
   (*current_liboctave_error_handler) ("incorrect integration function called");
   return 0.0;
@@ -213,14 +213,14 @@
 }
 
 float
-IndefQuad::do_integrate (octave_idx_type& ier, octave_idx_type& neval, float& abserr)
+IndefQuad::do_integrate (octave_idx_type&, octave_idx_type&, float&)
 {
   (*current_liboctave_error_handler) ("incorrect integration function called");
   return 0.0;
 }
 
 double
-FloatDefQuad::do_integrate (octave_idx_type& ier, octave_idx_type& neval, double& abserr)
+FloatDefQuad::do_integrate (octave_idx_type&, octave_idx_type&, double&)
 {
   (*current_liboctave_error_handler) ("incorrect integration function called");
   return 0.0;
@@ -256,7 +256,7 @@
 }
 
 double
-FloatIndefQuad::do_integrate (octave_idx_type& ier, octave_idx_type& neval, double& abserr)
+FloatIndefQuad::do_integrate (octave_idx_type&, octave_idx_type&, double&)
 {
   (*current_liboctave_error_handler) ("incorrect integration function called");
   return 0.0;
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/dDiagMatrix.cc
--- a/liboctave/dDiagMatrix.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/dDiagMatrix.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -343,18 +343,19 @@
 ColumnVector
 DiagMatrix::diag (octave_idx_type k) const
 {
+  ColumnVector d;
+
   octave_idx_type nnr = rows ();
   octave_idx_type nnc = cols ();
 
-  if (nnr == 0  || nnc == 0)
+  if (nnr == 0 || nnc == 0)
+    return d;
     
   if (k > 0)
     nnc -= k;
   else if (k < 0)
     nnr += k;
 
-  ColumnVector d;
-
   if (nnr > 0 && nnc > 0)
     {
       octave_idx_type ndiag = (nnr < nnc) ? nnr : nnc;
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/dbleQR.cc
--- a/liboctave/dbleQR.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/dbleQR.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -148,16 +148,16 @@
     }
 }
 
-QR::QR (const Matrix& q, const Matrix& r)
+QR::QR (const Matrix& q_arg, const Matrix& r_arg)
 {
-  if (q.columns () != r.rows ()) 
+  if (q_arg.columns () != r_arg.rows ()) 
     {
       (*current_liboctave_error_handler) ("QR dimensions mismatch");
       return;
     }
 
-  this->q = q;
-  this->r = r;
+  this->q = q_arg;
+  this->r = r_arg;
 }
 
 void
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/fCmplxQR.cc
--- a/liboctave/fCmplxQR.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/fCmplxQR.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -159,16 +159,16 @@
     }
 }
 
-FloatComplexQR::FloatComplexQR (const FloatComplexMatrix &q, const FloatComplexMatrix& r)
+FloatComplexQR::FloatComplexQR (const FloatComplexMatrix& q_arg, const FloatComplexMatrix& r_arg)
 {
-  if (q.columns () != r.rows ()) 
+  if (q_arg.columns () != r_arg.rows ()) 
     {
       (*current_liboctave_error_handler) ("QR dimensions mismatch");
       return;
     }
 
-  this->q = q;
-  this->r = r;
+  this->q = q_arg;
+  this->r = r_arg;
 }
 
 void
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/fDiagMatrix.cc
--- a/liboctave/fDiagMatrix.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/fDiagMatrix.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -343,18 +343,19 @@
 FloatColumnVector
 FloatDiagMatrix::diag (octave_idx_type k) const
 {
+  FloatColumnVector d;
+
   octave_idx_type nnr = rows ();
   octave_idx_type nnc = cols ();
 
   if (nnr == 0  || nnc == 0)
+    return d;
     
   if (k > 0)
     nnc -= k;
   else if (k < 0)
     nnr += k;
 
-  FloatColumnVector d;
-
   if (nnr > 0 && nnc > 0)
     {
       octave_idx_type ndiag = (nnr < nnc) ? nnr : nnc;
diff -r c3d21b9b94b6 -r 4976f66d469b liboctave/floatQR.cc
--- a/liboctave/floatQR.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/liboctave/floatQR.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -148,16 +148,16 @@
     }
 }
 
-FloatQR::FloatQR (const FloatMatrix& q, const FloatMatrix& r)
+FloatQR::FloatQR (const FloatMatrix& q_arg, const FloatMatrix& r_arg)
 {
-  if (q.columns () != r.rows ()) 
+  if (q_arg.columns () != r_arg.rows ()) 
     {
       (*current_liboctave_error_handler) ("QR dimensions mismatch");
       return;
     }
 
-  this->q = q;
-  this->r = r;
+  this->q = q_arg;
+  this->r = r_arg;
 }
 
 void
diff -r c3d21b9b94b6 -r 4976f66d469b src/ChangeLog
--- a/src/ChangeLog	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/ChangeLog	Fri Jul 11 17:59:28 2008 -0400
@@ -1,5 +1,30 @@
 2008-07-11  John W. Eaton  <jwe@octave.org>
 
+	* syscalls.cc (const_value): Delete arg NM.  Change all uses.
+
+	* DLD-FUNCTIONS/fft.cc (do_fft): Avoid GCC warning.
+	* DLD-FUNCTIONS/fft2.cc (do_fft2): Likewise.
+	* DLD-FUNCTIONS/fftn.cc (do_fftn): Likewise.
+	* DLD-FUNCTIONS/qr.cc (Fqrshift): Likewise.
+	* DLD-FUNCTIONS/lookup.cc (Flookup): Likewise.
+	* gl-render.cc (opengl_renderer::draw): Likewise.
+	* graphics.cc (axes::update_axis_limits,
+	hggroup::update_axis_limits, Favailable_backends):
+	Likewise.
+	* pt-cmd.cc (tree_no_op_command::dup, tree_function_def::dup):
+	Likewise.
+	* pt-const.cc (tree_constant::dup): Likewise.
+	* pt-id.cc (tree_identifier::dup): Likewise.
+	* pt-jump.cc (tree_break_command::dup, tree_continue_command::dup,
+	tree_return_command::dup): Likewise.
+
+	* DLD-FUNCTIONS/colamd.cc: Style fixes.
+	(tree_postorder): Rename from TreePostorder.
+	(tree_postorder, coletree): Avoid GCC warnings.
+
+	* DLD-FUNCTIONS/chol.cc (Fchol): Avoid GCC warnings.
+	(Fcholdelete, Fcholshift): Delete unused arg nargout.
+
 	* toplev.cc, toplev.h (octave_call_stack::caller_user_function,
 	octave_call_stack::caller_user_script,
 	octave_call_stack::do_caller_user_function,
diff -r c3d21b9b94b6 -r 4976f66d469b src/DLD-FUNCTIONS/chol.cc
--- a/src/DLD-FUNCTIONS/chol.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/DLD-FUNCTIONS/chol.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -181,10 +181,12 @@
 		  octave_idx_type info;
 		  SparseCHOL fact (m, info, natural);
 		  if (nargout == 3)
-		    if (vecout)
-		      retval(2) = fact.perm ();
-		    else
-		      retval(2) = fact.Q();
+		    {
+		      if (vecout)
+			retval(2) = fact.perm ();
+		      else
+			retval(2) = fact.Q();
+		    }
 
 		  if (nargout > 1 || info == 0)
 		    {
@@ -208,10 +210,12 @@
 		  SparseComplexCHOL fact (m, info, natural);
 
 		  if (nargout == 3)
-		    if (vecout)
-		      retval(2) = fact.perm ();
-		    else
-		      retval(2) = fact.Q();
+		    {
+		      if (vecout)
+			retval(2) = fact.perm ();
+		      else
+			retval(2) = fact.Q();
+		    }
 	  
 		  if (nargout > 1 || info == 0)
 		    {
@@ -984,7 +988,7 @@
 %! 
 */
 
-DEFUN_DLD (choldelete, args, nargout,
+DEFUN_DLD (choldelete, args, ,
   "-*- texinfo -*-\n\
 @deftypefn {Loadable Function} {@var{R1} =} choldelete (@var{R}, @var{j})\n\
 Given a Cholesky@tie{}factorization of a real symmetric or complex hermitian\n\
@@ -1116,7 +1120,7 @@
 %! assert(norm(R1'*R1 - single(Ac(p,p)),Inf) < 1e1*eps('single'))
 */
 
-DEFUN_DLD (cholshift, args, nargout,
+DEFUN_DLD (cholshift, args, ,
   "-*- texinfo -*-\n\
 @deftypefn {Loadable Function} {@var{R1} =} cholshift (@var{R}, @var{i}, @var{j})\n\
 Given a Cholesky@tie{}factorization of a real symmetric or complex hermitian\n\
diff -r c3d21b9b94b6 -r 4976f66d469b src/DLD-FUNCTIONS/colamd.cc
--- a/src/DLD-FUNCTIONS/colamd.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/DLD-FUNCTIONS/colamd.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -53,9 +53,9 @@
 
 // The symmetric column elimination tree code take from the Davis LDL code. 
 // Copyright given elsewhere in this file.
-static 
-void symetree (const octave_idx_type *ridx, const octave_idx_type *cidx, 
-	       octave_idx_type *Parent, octave_idx_type *P, octave_idx_type n)
+static void
+symetree (const octave_idx_type *ridx, const octave_idx_type *cidx, 
+	  octave_idx_type *Parent, octave_idx_type *P, octave_idx_type n)
 {
   OCTAVE_LOCAL_BUFFER (octave_idx_type, Flag, n);
   OCTAVE_LOCAL_BUFFER (octave_idx_type, Pinv, (P ? n : 0));
@@ -91,58 +91,64 @@
 }
 
 // The elimination tree post-ordering code below is taken from SuperLU
-static inline
-octave_idx_type make_set (octave_idx_type i, octave_idx_type *pp)
+static inline octave_idx_type
+make_set (octave_idx_type i, octave_idx_type *pp)
 {
   pp[i] = i;
   return i;
 }
 
-static inline
-octave_idx_type link (octave_idx_type s, octave_idx_type t, octave_idx_type *pp)
+static inline octave_idx_type
+link (octave_idx_type s, octave_idx_type t, octave_idx_type *pp)
 {
   pp[s] = t;
   return t;
 }
 
-static inline
-octave_idx_type find (octave_idx_type i, octave_idx_type *pp)
+static inline octave_idx_type
+find (octave_idx_type i, octave_idx_type *pp)
 {
   register octave_idx_type p, gp;
     
   p = pp[i];
   gp = pp[p];
-  while (gp != p) {
-    pp[i] = gp;
-    i = gp;
-    p = pp[i];
-    gp = pp[p];
-  }
-  return (p);
+
+  while (gp != p)
+    {
+      pp[i] = gp;
+      i = gp;
+      p = pp[i];
+      gp = pp[p];
+    }
+
+  return p;
 }
 
-static
-octave_idx_type etdfs (octave_idx_type v, octave_idx_type *first_kid, 
-		       octave_idx_type *next_kid, octave_idx_type *post, 
-		       octave_idx_type postnum)
+static octave_idx_type
+etdfs (octave_idx_type v, octave_idx_type *first_kid, 
+       octave_idx_type *next_kid, octave_idx_type *post, 
+       octave_idx_type postnum)
 {
-  for (octave_idx_type w = first_kid[v]; w != -1; w = next_kid[w]) {
+  for (octave_idx_type w = first_kid[v]; w != -1; w = next_kid[w])
     postnum = etdfs (w, first_kid, next_kid, post, postnum);
-  }
+
   post[postnum++] = v;
 
   return postnum;
 }
 
-static
-void TreePostorder(octave_idx_type n, octave_idx_type *parent, octave_idx_type *post)
+static void
+tree_postorder (octave_idx_type n, octave_idx_type *parent,
+		octave_idx_type *post)
 {
   // Allocate storage for working arrays and results
   OCTAVE_LOCAL_BUFFER (octave_idx_type, first_kid, n+1);
   OCTAVE_LOCAL_BUFFER (octave_idx_type, next_kid, n+1);
 
   // Set up structure describing children
-  for (octave_idx_type v = 0; v <= n; first_kid[v++] = -1);
+  for (octave_idx_type v = 0; v <= n; first_kid[v++] = -1)
+    /* do nothing */;
+
   for (octave_idx_type v = n-1; v >= 0; v--) 
     {
       octave_idx_type dad = parent[v];
@@ -154,17 +160,19 @@
   etdfs (n, first_kid, next_kid, post, 0);
 }
 
-static 
-void coletree (const octave_idx_type *ridx, const octave_idx_type *colbeg,
-	       octave_idx_type *colend, octave_idx_type *parent, 
-	       octave_idx_type nr, octave_idx_type nc)
+static void
+coletree (const octave_idx_type *ridx, const octave_idx_type *colbeg,
+	  octave_idx_type *colend, octave_idx_type *parent, 
+	  octave_idx_type nr, octave_idx_type nc)
 {
   OCTAVE_LOCAL_BUFFER (octave_idx_type, root, nc);
   OCTAVE_LOCAL_BUFFER (octave_idx_type, pp, nc);
   OCTAVE_LOCAL_BUFFER (octave_idx_type, firstcol, nr);
 
   // Compute firstcol[row] = first nonzero column in row
-  for (octave_idx_type row = 0; row < nr; firstcol[row++] = nc);
+  for (octave_idx_type row = 0; row < nr; firstcol[row++] = nc)
+    /* do nothing */;
+
   for (octave_idx_type col = 0; col < nc; col++) 
     for (octave_idx_type p = colbeg[col]; p < colend[col]; p++) 
       {
@@ -400,14 +408,14 @@
       coletree (ridx, colbeg, colend, etree, n_row, n_col);
 
       // Calculate the tree post-ordering
-      TreePostorder (n_col, etree, colbeg);
+      tree_postorder (n_col, etree, colbeg);
 
       // return the permutation vector
       NDArray out_perm (dim_vector (1, n_col));
       for (octave_idx_type i = 0; i < n_col; i++)
 	out_perm(i) = p [colbeg [i]] + 1;
 
-      retval (0) = out_perm;
+      retval(0) = out_perm;
 
       // print stats if spumoni > 0
       if (spumoni > 0)
@@ -597,14 +605,14 @@
 
       // Calculate the tree post-ordering
       OCTAVE_LOCAL_BUFFER (octave_idx_type, post, n_col + 1);
-      TreePostorder (n_col, etree, post);
+      tree_postorder (n_col, etree, post);
 
       // return the permutation vector
       NDArray out_perm (dim_vector (1, n_col));
       for (octave_idx_type i = 0; i < n_col; i++)
 	out_perm(i) = perm [post [i]] + 1;
 
-      retval (0) = out_perm;
+      retval(0) = out_perm;
 
       // print stats if spumoni > 0
       if (spumoni > 0)
@@ -707,9 +715,9 @@
 	      return retval;
 	    }
 	}
+
       // column elimination tree post-ordering (reuse variables)
       OCTAVE_LOCAL_BUFFER (octave_idx_type, etree, n_col + 1);
-      
 
       if (is_sym)
 	{
@@ -718,6 +726,7 @@
 	      error ("etree: matrix is marked as symmetric, but not square");
 	      return retval;
 	    }
+
 	  symetree (ridx, cidx, etree, 0, n_col);
 	}
       else
@@ -739,23 +748,23 @@
 	// We flag a root with n_col while Matlab does it with zero
 	// Convert for matlab compatiable output
 	if (etree[i] == n_col)
-	  tree (i) = 0;
+	  tree(i) = 0;
 	else
-	  tree (i) = etree[i] + 1;
+	  tree(i) = etree[i] + 1;
 
-      retval (0) = tree;
+      retval(0) = tree;
 
       if (nargout == 2)
 	{
 	  // Calculate the tree post-ordering
 	  OCTAVE_LOCAL_BUFFER (octave_idx_type, post, n_col + 1);
-	  TreePostorder (n_col, etree, post);
+	  tree_postorder (n_col, etree, post);
 
 	  NDArray postorder (dim_vector (1, n_col));
 	  for (octave_idx_type i = 0; i < n_col; i++)
-	    postorder (i) = post[i] + 1;
+	    postorder(i) = post[i] + 1;
 
-	  retval (1) = postorder;
+	  retval(1) = postorder;
 	}
     }
 
diff -r c3d21b9b94b6 -r 4976f66d469b src/DLD-FUNCTIONS/fft.cc
--- a/src/DLD-FUNCTIONS/fft.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/DLD-FUNCTIONS/fft.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -115,10 +115,12 @@
     dims (dim) = n_points;
 
   if (dims.any_zero () || n_points == 0)
-    if (arg.is_single_type ())
-      return octave_value (FloatNDArray (dims));
-    else
-      return octave_value (NDArray (dims));
+    {
+      if (arg.is_single_type ())
+	return octave_value (FloatNDArray (dims));
+      else
+	return octave_value (NDArray (dims));
+    }
 
   if (arg.is_single_type ())
     {
diff -r c3d21b9b94b6 -r 4976f66d469b src/DLD-FUNCTIONS/fft2.cc
--- a/src/DLD-FUNCTIONS/fft2.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/DLD-FUNCTIONS/fft2.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -106,10 +106,12 @@
     dims (1) = n_cols;
 
   if (dims.all_zero () || n_rows == 0 || n_cols == 0)
-    if (arg.is_single_type ())
-      return octave_value (FloatMatrix ());
-    else
-      return octave_value (Matrix ());
+    {
+      if (arg.is_single_type ())
+	return octave_value (FloatMatrix ());
+      else
+	return octave_value (Matrix ());
+    }
 
   if (arg.is_single_type ())
     {
diff -r c3d21b9b94b6 -r 4976f66d469b src/DLD-FUNCTIONS/fftn.cc
--- a/src/DLD-FUNCTIONS/fftn.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/DLD-FUNCTIONS/fftn.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -88,10 +88,12 @@
     return retval;
 
   if (dims.all_zero ())
-    if (arg.is_single_type ())
-      return octave_value (FloatMatrix ());
-    else
-      return octave_value (Matrix ());
+    {
+      if (arg.is_single_type ())
+	return octave_value (FloatMatrix ());
+      else
+	return octave_value (Matrix ());
+    }
 
   if (arg.is_single_type ())
     {
diff -r c3d21b9b94b6 -r 4976f66d469b src/DLD-FUNCTIONS/lookup.cc
--- a/src/DLD-FUNCTIONS/lookup.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/DLD-FUNCTIONS/lookup.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -228,7 +228,7 @@
       
       bool (*ov_str_comp) (const octave_value&, const octave_value&);
 
-      bool icase = false, desc;
+      bool icase = false;
 
       // check for case-insensitive option
       if (nargin == 3)
diff -r c3d21b9b94b6 -r 4976f66d469b src/DLD-FUNCTIONS/qr.cc
--- a/src/DLD-FUNCTIONS/qr.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/DLD-FUNCTIONS/qr.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -1429,7 +1429,6 @@
   if (argq.is_matrix_type () && argr.is_matrix_type () 
       && argi.is_real_scalar () && argj.is_real_scalar ())
     {
-      octave_idx_type m = argq.rows ();
       octave_idx_type n = argr.columns ();
       octave_idx_type k = argq.columns ();
 
diff -r c3d21b9b94b6 -r 4976f66d469b src/gl-render.cc
--- a/src/gl-render.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/gl-render.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -2298,7 +2298,7 @@
       has_facealpha = ((a.numel () > 0) && (a.rows () == f.rows ()));
     }
 
-  octave_idx_type fr = f.rows (), fc = f.columns ();
+  octave_idx_type fr = f.rows ();
   std::vector<vertex_data> vdata (f.numel ());
 
   for (int i = 0; i < nf; i++)
diff -r c3d21b9b94b6 -r 4976f66d469b src/graphics.cc
--- a/src/graphics.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/graphics.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -3160,8 +3160,6 @@
 
   Matrix kids = xproperties.get_children ();
 
-  octave_idx_type n = kids.numel ();
-
   double min_val = octave_Inf;
   double max_val = -octave_Inf;
   double min_pos = octave_Inf;
@@ -3491,8 +3489,6 @@
 {
   Matrix kids = xproperties.get_children ();
 
-  octave_idx_type n = kids.numel ();
-
   double min_val = octave_Inf;
   double max_val = -octave_Inf;
   double min_pos = octave_Inf;
@@ -4172,7 +4168,7 @@
   return octave_value (gh_manager::figure_handle_list ());
 }
 
-DEFUN (available_backends, args, ,
+DEFUN (available_backends, , ,
    "-*- texinfo -*-\n\
 @deftypefn {Built-in Function} {} available_backends ()\n\
 Returns resgistered graphics backends.\n\
diff -r c3d21b9b94b6 -r 4976f66d469b src/pt-cmd.cc
--- a/src/pt-cmd.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/pt-cmd.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -32,7 +32,7 @@
 
 tree_command *
 tree_no_op_command::dup (symbol_table::scope_id,
-			 symbol_table::context_id context)
+			 symbol_table::context_id /*context*/)
 {
   return new tree_no_op_command (orig_cmd, line (), column ());
 }
@@ -65,7 +65,7 @@
 
 tree_command *
 tree_function_def::dup (symbol_table::scope_id,
-			symbol_table::context_id context)
+			symbol_table::context_id /*context*/)
 {
   return new tree_function_def (fcn, line (), column ());
 }
diff -r c3d21b9b94b6 -r 4976f66d469b src/pt-const.cc
--- a/src/pt-const.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/pt-const.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -72,7 +72,7 @@
 
 tree_expression *
 tree_constant::dup (symbol_table::scope_id,
-		    symbol_table::context_id context)
+		    symbol_table::context_id /*context*/)
 {
   tree_constant *new_tc
     = new tree_constant (val, orig_text, line (), column ());
diff -r c3d21b9b94b6 -r 4976f66d469b src/pt-id.cc
--- a/src/pt-id.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/pt-id.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -120,7 +120,7 @@
 
 tree_identifier *
 tree_identifier::dup (symbol_table::scope_id sc,
-		      symbol_table::context_id context)
+		      symbol_table::context_id /*context*/)
 {
   // The new tree_identifier object contains a symbol_record
   // entry from the duplicated scope.
diff -r c3d21b9b94b6 -r 4976f66d469b src/pt-jump.cc
--- a/src/pt-jump.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/pt-jump.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -50,7 +50,7 @@
 
 tree_command *
 tree_break_command::dup (symbol_table::scope_id,
-			 symbol_table::context_id context)
+			 symbol_table::context_id /*context*/)
 {
   return new tree_break_command (line (), column ());
 }
@@ -77,7 +77,7 @@
 
 tree_command *
 tree_continue_command::dup (symbol_table::scope_id,
-			    symbol_table::context_id context)
+			    symbol_table::context_id /*context*/)
 {
   return new tree_continue_command (line (), column ());
 }
@@ -104,7 +104,7 @@
 
 tree_command *
 tree_return_command::dup (symbol_table::scope_id,
-			  symbol_table::context_id context)
+			  symbol_table::context_id /*context*/)
 {
   return new tree_return_command (line (), column ());
 }
diff -r c3d21b9b94b6 -r 4976f66d469b src/syscalls.cc
--- a/src/syscalls.cc	Fri Jul 11 15:43:10 2008 -0400
+++ b/src/syscalls.cc	Fri Jul 11 17:59:28 2008 -0400
@@ -1596,7 +1596,7 @@
 }
 
 static octave_value
-const_value (const char *nm, const octave_value_list& args, int val)
+const_value (const octave_value_list& args, int val)
 {
   octave_value retval;
 
@@ -1623,7 +1623,7 @@
 @seealso{fcntl, F_GETFD, F_GETFL, F_SETFD, F_SETFL}\n\
 @end deftypefn")
 {
-  return const_value ("F_DUPFD", args, F_DUPFD);
+  return const_value (args, F_DUPFD);
 }
 #endif
 
@@ -1636,7 +1636,7 @@
 @seealso{fcntl, F_DUPFD, F_GETFL, F_SETFD, F_SETFL}\n\
 @end deftypefn")
 {
-  return const_value ("F_GETFD", args, F_GETFD);
+  return const_value (args, F_GETFD);
 }
 #endif
 
@@ -1649,7 +1649,7 @@
 @seealso{fcntl, F_DUPFD, F_GETFD, F_SETFD, F_SETFL}\n\
 @end deftypefn")
 {
-  return const_value ("F_GETFL", args, F_GETFL);
+  return const_value (args, F_GETFL);
 }
 #endif
 
@@ -1662,7 +1662,7 @@
 @seealso{fcntl, F_DUPFD, F_GETFD, F_GETFL, F_SETFL}\n\
 @end deftypefn")
 {
-  return const_value ("F_SETFD", args, F_SETFD);
+  return const_value (args, F_SETFD);
 }
 #endif
 
@@ -1675,7 +1675,7 @@
 @seealso{fcntl, F_DUPFD, F_GETFD, F_GETFL, F_SETFD}\n\
 @end deftypefn")
 {
-  return const_value ("F_SETFL", args, F_SETFL);
+  return const_value (args, F_SETFL);
 }
 #endif
 
@@ -1689,7 +1689,7 @@
 @seealso{fcntl, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\
 @end deftypefn")
 {
-  return const_value ("O_APPEND", args, O_APPEND);
+  return const_value (args, O_APPEND);
 }
 #endif
 
@@ -1702,7 +1702,7 @@
 @seealso{fcntl, O_APPEND, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\
 @end deftypefn")
 {
-  return const_value ("O_ASYNC", args, O_ASYNC);
+  return const_value (args, O_ASYNC);
 }
 #endif
 
@@ -1716,7 +1716,7 @@
 @seealso{fcntl, O_APPEND, O_ASYNC, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\
 @end deftypefn")
 {
-  return const_value ("O_CREAT", args, O_CREAT);
+  return const_value (args, O_CREAT);
 }
 #endif
 
@@ -1729,7 +1729,7 @@
 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\
 @end deftypefn")
 {
-  return const_value ("O_EXCL", args, O_EXCL);
+  return const_value (args, O_EXCL);
 }
 #endif
 
@@ -1743,7 +1743,7 @@
 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\
 @end deftypefn")
 {
-  return const_value ("O_NONBLOCK", args, O_NONBLOCK);
+  return const_value (args, O_NONBLOCK);
 }
 #endif
 
@@ -1757,7 +1757,7 @@
 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY}\n\
 @end deftypefn")
 {
-  return const_value ("O_RDONLY", args, O_RDONLY);
+  return const_value (args, O_RDONLY);
 }
 #endif
 
@@ -1771,7 +1771,7 @@
 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_SYNC, O_TRUNC, O_WRONLY}\n\
 @end deftypefn")
 {
-  return const_value ("O_RDWR", args, O_RDWR);
+  return const_value (args, O_RDWR);
 }
 #endif
 
@@ -1785,7 +1785,7 @@
 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_TRUNC, O_WRONLY}\n\
 @end deftypefn")
 {
-  return const_value ("O_SYNC", args, O_SYNC);
+  return const_value (args, O_SYNC);
 }
 #endif
 
@@ -1799,7 +1799,7 @@
 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_WRONLY}\n\
 @end deftypefn")
 {
-  return const_value ("O_TRUNC", args, O_TRUNC);
+  return const_value (args, O_TRUNC);
 }
 #endif
 
@@ -1813,7 +1813,7 @@
 @seealso{fcntl, O_APPEND, O_ASYNC, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC}\n\
 @end deftypefn")
 {
-  return const_value ("O_WRONLY", args, O_WRONLY);
+  return const_value (args, O_WRONLY);
 }
 #endif
 
@@ -1830,7 +1830,7 @@
 @seealso{waitpid, WUNTRACED, WCONTINUE}\n\
 @end deftypefn")
 {
-  return const_value ("WNOHANG", args, WNOHANG);
+  return const_value (args, WNOHANG);
 }
 
 #if !defined (WUNTRACED)
@@ -1847,7 +1847,7 @@
 @seealso{waitpid, WNOHANG, WCONTINUE}\n\
 @end deftypefn")
 {
-  return const_value ("WUNTRACED", args, WUNTRACED);
+  return const_value (args, WUNTRACED);
 }
 
 #if !defined (WCONTINUE)
@@ -1864,7 +1864,7 @@
 @seealso{waitpid, WNOHANG, WUNTRACED}\n\
 @end deftypefn")
 {
-  return const_value ("WCONTINUE", args, WCONTINUE);
+  return const_value (args, WCONTINUE);
 }
 
 /*