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, 63 insertions, 0 deletions

diff --git a/volk/lib/qa_8s_convert_32f_unaligned16.cc b/volk/lib/qa_8s_convert_32f_unaligned16.cc
new file mode 100644
index 000000000..ea1fb7c74
--- /dev/null
+++ b/volk/lib/qa_8s_convert_32f_unaligned16.cc
@@ -0,0 +1,63 @@
+#include <volk/volk_runtime.h>
+#include <volk/volk.h>
+#include <qa_8s_convert_32f_unaligned16.h>
+#include <volk/volk_8s_convert_32f_unaligned16.h>
+#include <cstdlib>
+
+//test for sse4.1
+
+#ifndef LV_HAVE_SSE4_1
+
+void qa_8s_convert_32f_unaligned16::t1() {
+  printf("sse4_1 not available... no test performed\n");
+}
+
+#else
+
+void qa_8s_convert_32f_unaligned16::t1() {
+  
+  volk_runtime_init();
+
+  volk_environment_init();
+  clock_t start, end;
+  double total;
+  const int vlen = 3201;
+  const int ITERS = 100000;
+  int8_t input0[vlen+1] __attribute__ ((aligned (16)));
+  
+  float output_generic[vlen+1] __attribute__ ((aligned (16)));
+  float output_sse4_1[vlen+1] __attribute__ ((aligned (16)));
+
+  for(int i = 0; i < vlen; ++i) {   
+    input0[i] = ((int8_t)(((float) (rand() - (RAND_MAX/2))) / static_cast<float>((RAND_MAX/2)) * 128.0));
+  }
+  printf("8s_convert_32f_unaligned\n");
+
+  start = clock();
+  for(int count = 0; count < ITERS; ++count) {
+    volk_8s_convert_32f_unaligned16_manual(output_generic, &input0[1], 128.0, vlen, "generic");
+  }
+  end = clock();
+  total = (double)(end-start)/(double)CLOCKS_PER_SEC;
+  printf("generic_time: %f\n", total);
+
+  start = clock();
+  for(int count = 0; count < ITERS; ++count) {
+    get_volk_runtime()->volk_8s_convert_32f_unaligned16(output_sse4_1, &input0[1], 128.0, vlen);
+  }
+  end = clock();
+  total = (double)(end-start)/(double)CLOCKS_PER_SEC;
+  printf("sse4_1_time: %f\n", total);
+
+  for(int i = 0; i < 1; ++i) {
+    //printf("inputs: %d, %d\n", input0[i*2], input0[i*2 + 1]);
+    //printf("generic... %d, ssse3... %d\n", output0[i], output1[i]);
+  }
+  
+  for(int i = 0; i < vlen; ++i) {
+    //printf("%e...%e\n", output_generic[i], output_sse4_1[i]);
+    CPPUNIT_ASSERT_EQUAL(output_generic[i], output_sse4_1[i]);
+  }
+}
+
+#endif