diff --git a/matlab/swz/c-code/mex/modify_for_mex.c b/matlab/swz/c-code/mex/modify_for_mex.c
index 1fb1c2989..e7402557b 100644
--- a/matlab/swz/c-code/mex/modify_for_mex.c
+++ b/matlab/swz/c-code/mex/modify_for_mex.c
@@ -11,62 +11,14 @@
 
 int constant_seed;
 
-/*
-int
-swz_printf(char *msg, ...)
-{
-  int ret;
-  va_list ap;
-  va_start(ap, msg);
-
-#if defined(MATLAB_MEX_FILE)
-  ret = mexPrintf(msg, ap);
-#elif defined(OCTAVE_MEX_FILE)
-  mexPrintf(msg, ap);
-  ret = 1;
-#else
-  ret = vprintf(msg, ap);
-#endif
-
-  va_end(ap);
-  return ret;
-}
-
-int
-swz_fprintf_stdout(char *msg, ...)
-{
-  int ret;
-  va_list ap;
-  va_start(ap, msg);
-
-#if defined(MATLAB_MEX_FILE)
-  ret = mexPrintf(msg, ap);
-  mexEvalString("pause(.001);");
-  //  mexEvalString("drawnow;");
-#elif defined(OCTAVE_MEX_FILE)
-  mexPrintf(msg, ap);
-  ret = 1;
-#else
-  ret = vprintf(msg, ap);
-#endif
-
-  va_end(ap);
-  return ret;
-}
-*/
 void
 swz_fprintf_err(char *str, ...)
 {
-  char *whole_str=(char*)NULL;
-  char *msg_truncated = ".....MSG TRUNCATED\n";
-  int num_args = 0;
   va_list ap;
-
   va_start(ap, str);
 
 #if defined(MATLAB_MEX_FILE) || defined(OCTAVE_MEX_FILE)
   mexPrintf(str, ap);
-  /*  mexEvalString("drawnow;");*/
 #else
   vfprintf(stderr, str, ap);
 #endif
diff --git a/matlab/swz/c-code/mex/modify_for_mex.h b/matlab/swz/c-code/mex/modify_for_mex.h
index 066954d97..561dcb965 100644
--- a/matlab/swz/c-code/mex/modify_for_mex.h
+++ b/matlab/swz/c-code/mex/modify_for_mex.h
@@ -2,28 +2,18 @@
 #define _MEXMOD
 void swz_exit(int status);
 void swz_fprintf_err(const char * str, ...);
-/*int swz_fprintf_stdout(char *msg, ...);*/
-/*int swz_printf(char *msg, ...);*/
 extern int constant_seed;
 #endif
 
+
+
 #if defined(MATLAB_MEX_FILE) || defined(OCTAVE_MEX_FILE)
-/*#include "matrix.h"*/
+
+
 #include <dynmex.h>
 #include <dynblas.h>
 #include <dynlapack.h>
 
-/*  //#undef printf   ansi-c*/
-/*  //#define printf swz_printf   ansi-c*/
-/*#define fflush(stdout) mexEvalString("drawnow;");*/
-
-#undef printf
-
-#define printf mexPrintf
-
-#define swz_fprintf_stdout mexPrintf
-
-
 #define swzMalloc mxMalloc
 #define swzCalloc mxCalloc
 #define swzRealloc mxRealloc
@@ -31,9 +21,13 @@ extern int constant_seed;
 
 
 #else
+
+
 #define swz_fprintf_stdout printf
 #define swzMalloc malloc
 #define swzCalloc calloc
 #define swzRealloc realloc
 #define swzFree free
+
+
 #endif
diff --git a/matlab/swz/c-code/utilities/DWCcode/arrays/dw_array.c b/matlab/swz/c-code/utilities/DWCcode/arrays/dw_array.c
index 9ac252342..204da396b 100644
--- a/matlab/swz/c-code/utilities/DWCcode/arrays/dw_array.c
+++ b/matlab/swz/c-code/utilities/DWCcode/arrays/dw_array.c
@@ -160,7 +160,7 @@ static int dw_PrintInt(FILE* f, void* element, char *format)
 {
   if(f==stdout)
     {
-      swz_fprintf_stdout(format ? format : "%d ",*((int*)element));
+      printf(format ? format : "%d ",*((int*)element));
       return 1;
     }
   else
@@ -171,7 +171,7 @@ static int dw_PrintDouble(FILE* f, void* element, char *format)
 {
   if(f==stdout)
     {
-      swz_fprintf_stdout(format ? format : "%lf ",*((double*)element));
+      printf(format ? format : "%lf ",*((double*)element));
       return 1;
     }
   else
@@ -182,7 +182,7 @@ static int dw_PrintFloat(FILE* f, void* element, char *format)
 {
   if(f==stdout)
     {
-      swz_fprintf_stdout(format ? format : "%f ",*((float*)element));
+      printf(format ? format : "%f ",*((float*)element));
       return 1;
     }
   else
@@ -193,7 +193,7 @@ static int dw_PrintChar(FILE* f, void* element, char *format)
 {
   if(f==stdout)
     {
-      swz_fprintf_stdout(format ? format : "%c ",*((char*)element));
+      printf(format ? format : "%c ",*((char*)element));
       return 1;
     }
   else
@@ -204,7 +204,7 @@ static int dw_PrintString(FILE* f, void* element, char *format)
 {
   if(f==stdout)
     {
-      swz_fprintf_stdout(format ? format : "%s\t",(char*)element);
+      printf(format ? format : "%s\t",(char*)element);
       return 1;
     }
   else