1 files changed, 3 insertions, 1 deletions
diff --git a/src/c/auxiliaryFunctions/find/zfinda.c b/src/c/auxiliaryFunctions/find/zfinda.c
index f9c3f970..0fa7e178 100644
--- a/src/c/auxiliaryFunctions/find/zfinda.c
+++ b/src/c/auxiliaryFunctions/find/zfinda.c
@@ -12,7 +12,7 @@
 
 #include "find.h"
 
-void zfinda(doubleComplex* z, int size, double *out, int* indiceOut) {
+void zfinda(doubleComplex* z, int size, double *out, int* indiceOut, int max ) {
   int i = 0;
   indiceOut[1]=0;
   
@@ -20,6 +20,8 @@ void zfinda(doubleComplex* z, int size, double *out, int* indiceOut) {
   out[0]=-1;
   
   for (i = 0; i < size ; ++i) {
+    /*to avoid useless search if we only want to find the  max first founded value   */
+    if (indiceOut[1] == max  ) return ;
     if (zreals(z[i]) != 0 || zimags(z[i]) != 0) {
 	out[indiceOut[1]] = (double)(i+1);
 	indiceOut[1]++;