Initial checkin for VOLK - Vector-Optimized Library of Kernels. This is a new SIMD library.

It currently stands by itself under the GNU Radio tree and can be used separately. We will integrate the build process into GNU Raio and start building off of its functionality over time.

1 files changed, 61 insertions, 0 deletions

diff --git a/volk/lib/qa_64u_popcnt_aligned16.cc b/volk/lib/qa_64u_popcnt_aligned16.cc
new file mode 100644
index 000000000..bce9ff6c2
--- /dev/null
+++ b/volk/lib/qa_64u_popcnt_aligned16.cc
@@ -0,0 +1,61 @@
+#include <volk/volk_runtime.h>
+#include <volk/volk.h>
+#include <qa_64u_popcnt_aligned16.h>
+#include <volk/volk_64u_popcnt_aligned16.h>
+#include <cstdlib>
+
+//test for sse
+
+#ifndef LV_HAVE_SSE4_2
+
+void qa_64u_popcnt_aligned16::t1() {
+  printf("sse4.2 not available... no test performed\n");
+}
+
+#else
+
+void qa_64u_popcnt_aligned16::t1() {
+  
+  
+  volk_runtime_init();
+
+  volk_environment_init();
+  clock_t start, end;
+  double total;
+
+  const int ITERS = 10000000;
+  uint64_t input0 __attribute__ ((aligned (16)));
+  
+  uint64_t output0 __attribute__ ((aligned (16)));
+  uint64_t output01 __attribute__ ((aligned (16)));
+
+    input0 = ((uint64_t) (rand() - (RAND_MAX/2)));
+    output0 = 0;
+    output01 = 0;
+
+  printf("64u_popcnt_aligned\n");
+
+  start = clock();
+  uint64_t ret = 0;
+  for(int count = 0; count < ITERS; ++count) {
+    volk_64u_popcnt_aligned16_manual(&ret, input0, "generic");
+    output0 += ret;
+  }
+  end = clock();
+  total = (double)(end-start)/(double)CLOCKS_PER_SEC;
+  printf("generic_time: %f\n", total);
+  start = clock();
+  ret = 0;
+  for(int count = 0; count < ITERS; ++count) {
+    get_volk_runtime()->volk_64u_popcnt_aligned16(&ret, input0);
+    output01 += ret;
+  }
+  end = clock();
+  total = (double)(end-start)/(double)CLOCKS_PER_SEC;
+  printf("sse4.2_time: %f\n", total);
+
+  
+  CPPUNIT_ASSERT_EQUAL(output0, output01);
+}
+
+#endif