print_alpha

src/navier-stokes.c

@@ -145,6 +145,7 @@ int enstrophy(
   unsigned int algorithm,
   double print_freq,
   double starting_time,
+  bool print_alpha,
   unsigned int nthreads,
   FILE* savefile,
   FILE* utfile,
@@ -236,7 +237,7 @@ int enstrophy(
     }
 
     // print alpha when it gets negative
-    if(alpha<0){
+    if(print_alpha && alpha<0){
       fprintf(stderr,"## negative alpha: % .8e at time % .8e\n",alpha, time);
       printf("## negative alpha: % .15e at time % .15e\n",alpha, time);
     }