change trace prototypes

1 files changed, 4 insertions, 4 deletions

diff --git a/src/matrixOperations/trace/stracea.c b/src/matrixOperations/trace/stracea.c
index b35a82c9..06c4a8be 100644
--- a/src/matrixOperations/trace/stracea.c
+++ b/src/matrixOperations/trace/stracea.c
@@ -12,16 +12,16 @@
 
 #include "matrixTrace.h"
 
-void stracea ( float* in ,int lines, float* out ){
+float stracea ( float* in ,int lines ){
     
     
     int i = 0 ;
-    *out  = 0 ;
+    float out  = 0 ;
     
     for (  i = 0 ; i < lines ; ++i)
-        *out += in[i*lines + i] ;
-    
+        out += in[i*lines + i] ;
     
+    return out;
 }