Add support for OSX in BTL and fix a few warnings

bench/btl/generic_bench/bench.hh

@@ -102,8 +102,8 @@ BTL_DONT_INLINE void bench( int size_min, int size_max, int nb_point )
       // merge the two data
       std::vector<int> newSizes;
       std::vector<double> newFlops;
-      int i=0;
-      int j=0;
+      unsigned int i=0;
+      unsigned int j=0;
       while (i<tab_sizes.size() && j<oldSizes.size())
       {
         if (tab_sizes[i] == oldSizes[j])

bench/btl/generic_bench/btl.hh

@@ -46,7 +46,7 @@
 
 #if (defined __GNUC__) && (!defined __INTEL_COMPILER) && !defined(__arm__) && !defined(__powerpc__)
 #define BTL_DISABLE_SSE_EXCEPTIONS()  { \
-  int aux; \
+  int aux = 0; \
   asm( \
   "stmxcsr   %[aux]           \n\t" \
   "orl       $32832, %[aux]   \n\t" \

bench/btl/generic_bench/init/init_matrix.hh

@@ -29,7 +29,7 @@ BTL_DONT_INLINE void init_row(Vector & X, int size, int row){
 
   X.resize(size);
 
-  for (int j=0;j<X.size();j++){
+  for (unsigned int j=0;j<X.size();j++){
     X[j]=typename Vector::value_type(init_function(row,j));
   }
 }
@@ -42,7 +42,7 @@ BTL_DONT_INLINE void init_row(Vector & X, int size, int row){
 template<double init_function(int,int),class Vector>
 BTL_DONT_INLINE void init_matrix(Vector &  A, int size){
   A.resize(size);
-  for (int row=0; row<A.size() ; row++){
+  for (unsigned int row=0; row<A.size() ; row++){
     init_row<init_function>(A[row],size,row);
   }
 }
@@ -50,11 +50,11 @@ BTL_DONT_INLINE void init_matrix(Vector &  A, int size){
 template<double init_function(int,int),class Matrix>
 BTL_DONT_INLINE void init_matrix_symm(Matrix&  A, int size){
   A.resize(size);
-  for (int row=0; row<A.size() ; row++)
+  for (unsigned int row=0; row<A.size() ; row++)
     A[row].resize(size);
-  for (int row=0; row<A.size() ; row++){
+  for (unsigned int row=0; row<A.size() ; row++){
     A[row][row] = init_function(row,row);
-    for (int col=0; col<row ; col++){
+    for (unsigned int col=0; col<row ; col++){
       double x = init_function(row,col);
       A[row][col] = A[col][row] = x;
     }

bench/btl/generic_bench/init/init_vector.hh

@@ -29,7 +29,7 @@ void init_vector(Vector & X, int size){
 
   X.resize(size);
 
-  for (int i=0;i<X.size();i++){
+  for (unsigned int i=0;i<X.size();i++){
     X[i]=typename Vector::value_type(init_function(i));
   }
 }

bench/btl/generic_bench/timers/portable_perf_analyzer.hh

@@ -78,7 +78,7 @@ public:
     // time measurement
     action.calculate();
     _chronos.start();
-    for (int ii=0;ii<_nb_calc;ii++)
+    for (unsigned int ii=0;ii<_nb_calc;ii++)
     {
       action.calculate();
     }

bench/btl/generic_bench/timers/portable_timer.hh

@@ -34,7 +34,7 @@
 //  timer  -------------------------------------------------------------------//
 
 //  A timer object measures CPU time.
-#ifdef _MSC_VER
+#if defined(_MSC_VER)
 
 #define NOMINMAX
 #include <windows.h>
@@ -87,6 +87,48 @@
 
  }; // Portable_Timer
 
+#elif defined(__APPLE__)
+#include <CoreServices/CoreServices.h>
+#include <mach/mach_time.h>
+
+
+class Portable_Timer
+{
+ public:
+
+  Portable_Timer()
+  {
+  }
+
+  void start()
+  {
+    m_start_time = double(mach_absolute_time())*1e-9;;
+
+  }
+
+  void stop()
+  {
+    m_stop_time = double(mach_absolute_time())*1e-9;;
+
+  }
+
+  double elapsed()
+  {
+    return  user_time();
+  }
+
+  double user_time()
+  {
+    return m_stop_time - m_start_time;
+  }
+
+
+private:
+
+  double m_stop_time, m_start_time;
+
+}; // Portable_Timer (Apple)
+
 #else
 
 #include <sys/time.h>
@@ -138,7 +180,7 @@ private:
   int m_clkid;
   double m_stop_time, m_start_time;
 
-}; // Portable_Timer
+}; // Portable_Timer (Linux)
 
 #endif