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, 96 insertions, 0 deletions

diff --git a/volk/lib/qa_32fc_square_dist_scalar_mult_aligned16.cc b/volk/lib/qa_32fc_square_dist_scalar_mult_aligned16.cc
new file mode 100644
index 000000000..f923d1d5c
--- /dev/null
+++ b/volk/lib/qa_32fc_square_dist_scalar_mult_aligned16.cc
@@ -0,0 +1,96 @@
+#include <volk/volk.h>
+#include <qa_32fc_square_dist_scalar_mult_aligned16.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <time.h>
+
+#define ERR_DELTA .0001
+#define NUM_ITERS 10000000
+#define VEC_LEN 64
+
+static float uniform() {
+  return 2.0 * ((float) rand() / RAND_MAX - 0.5);	// uniformly (-1, 1)
+}
+
+static void
+random_floats (float *buf, unsigned n)
+{
+  unsigned int i = 0;
+  for (; i < n; i++) {
+
+    buf[i] = uniform () * 32767;
+
+  }
+}
+
+
+#ifndef LV_HAVE_SSE3
+
+void qa_32fc_square_dist_scalar_mult_aligned16::t1(){
+  printf("sse3 not available... no test performed\n");
+}
+
+#else
+
+
+void qa_32fc_square_dist_scalar_mult_aligned16::t1(){
+  int i = 0;
+  
+  const int vlen = VEC_LEN;
+  
+  volk_environment_init();
+  int ret;
+  
+  float* target;
+  float* target_generic;
+  std::complex<float>* src0 ;
+  std::complex<float>* points;
+  float scalar;
+
+  ret = posix_memalign((void**)&points, 16, vlen << 3);
+  ret = posix_memalign((void**)&target, 16, vlen << 2);
+  ret = posix_memalign((void**)&target_generic, 16, vlen << 2);
+  ret = posix_memalign((void**)&src0, 16, 8);
+  
+  random_floats((float*)points, vlen * 2);
+  random_floats((float*)src0, 2);
+  random_floats(&scalar, 1);
+  
+  printf("32fc_square_dist_scalar_mult_aligned16\n");
+  
+  clock_t start, end;
+  double total;
+  
+  
+  start = clock();
+  for(int k = 0; k < NUM_ITERS; ++k) {
+    volk_32fc_square_dist_scalar_mult_aligned16_manual(target_generic, src0, points, scalar, vlen << 3, "generic");
+  }
+  end = clock();  
+  total = (double)(end-start)/(double)CLOCKS_PER_SEC;
+  printf("generic time: %f\n", total);
+  
+  start = clock();
+  for(int k = 0; k < NUM_ITERS; ++k) {
+    volk_32fc_square_dist_scalar_mult_aligned16_manual(target, src0, points, scalar, vlen << 3, "sse3");
+  }
+  
+  end = clock();  
+  total = (double)(end-start)/(double)CLOCKS_PER_SEC;
+  printf("sse3 time: %f\n", total);
+
+  
+  
+  for(i = 0; i < vlen; ++i) {
+    printf("generic: %f, sse3: %f\n", target_generic[i], target[i]);
+    CPPUNIT_ASSERT_DOUBLES_EQUAL(target[i], target_generic[i], fabs(target_generic[1]) * ERR_DELTA);//, target_generic[1] * ERR_DELTA);
+  }
+
+  free(target);
+  free(target_generic);
+  free(points);
+  free(src0);
+}
+
+#endif /*LV_HAVE_SSE3*/