1 files changed, 17 insertions, 10 deletions
diff --git a/src/numkondo.c b/src/numkondo.c
index 0568861..91e6be2 100644
--- a/src/numkondo.c
+++ b/src/numkondo.c
@@ -1,5 +1,5 @@
 /*
-Copyright 2015 Ian Jauslin
+Copyright 2015-2022 Ian Jauslin
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -86,12 +86,6 @@ int read_args_numkondo(int argc,const char* argv[], Str_Array* str_args, Numkond
   // whether a file was specified on the command-line
   int exists_file=0;
 
-  // if there are no arguments
-  if(argc==1){
-    print_usage_numkondo();
-    exit(-1);
-  }
-
   // defaults
   // display entire flow
   (*opts).display_mode=DISPLAY_NUMERICAL;
@@ -193,6 +187,8 @@ int numflow(Str_Array str_args, Numkondo_Options opts){
   Grouped_Polynomial flow_equation;
   // whether or not to use mpfr floats
   int mpfr_flag=0;
+  // postprocess flow equation
+  Grouped_Polynomial postprocess_flow_equation;
 
   // set mpfr defaults
   if(opts.mpfr_prec!=0){
@@ -205,7 +201,7 @@ int numflow(Str_Array str_args, Numkondo_Options opts){
   }
 
 
-  // parse id table
+  // parse labels
   arg_index=find_str_arg("labels", str_args);
   if(arg_index<0){
     fprintf(stderr,"error: no labels entry in the configuration file\n");
@@ -225,6 +221,16 @@ int numflow(Str_Array str_args, Numkondo_Options opts){
     char_array_to_Grouped_Polynomial(str_args.strs[arg_index], &flow_equation);
   }
 
+  // parse postprocess operation
+  arg_index=find_str_arg("postprocess_operation", str_args);
+  if(arg_index>=0){
+    char_array_to_Grouped_Polynomial(str_args.strs[arg_index], &postprocess_flow_equation);
+  }
+  else{
+    init_Grouped_Polynomial(&postprocess_flow_equation,1);
+  }
+
+
   // initial conditions
   // check they were not specified on the command line
   if(opts.eval_rccstring.length==-1){
@@ -252,17 +258,18 @@ int numflow(Str_Array str_args, Numkondo_Options opts){
   }
 
   if(mpfr_flag==0){
-    numerical_flow(flow_equation, init_cd, labels, opts.niter, opts.display_mode);
+    numerical_flow(flow_equation, init_cd, postprocess_flow_equation, labels, opts.niter, opts.display_mode);
     free_RCC(init_cd);
   }
   else{
-    numerical_flow_mpfr(flow_equation, init_cd_mpfr, labels, opts.niter, opts.display_mode);
+    numerical_flow_mpfr(flow_equation, init_cd_mpfr, postprocess_flow_equation, labels, opts.niter, opts.display_mode);
     free_RCC_mpfr(init_cd_mpfr);
   }
 
 
   // free memory
   free_Labels(labels);
+  free_Grouped_Polynomial(postprocess_flow_equation);
   free_Grouped_Polynomial(flow_equation);
   return(0);
 }