1 files changed, 95 insertions, 0 deletions
diff --git a/volk/lib/qa_32f_power_aligned16.cc b/volk/lib/qa_32f_power_aligned16.cc
new file mode 100644
index 000000000..1b331daeb
--- /dev/null
+++ b/volk/lib/qa_32f_power_aligned16.cc
@@ -0,0 +1,95 @@
+#include <volk/volk_runtime.h>
+#include <volk/volk.h>
+#include <qa_32f_power_aligned16.h>
+#include <stdlib.h>
+#include <math.h>
+#include <time.h>
+
+#define	ERR_DELTA	(1e-4)
+
+//test for sse
+static float uniform() {
+  return 2.0 * ((float) rand() / RAND_MAX - 0.5);	// uniformly (-1, 1)
+}
+
+static void
+random_floats (float *buf, unsigned n)
+{
+  for (unsigned i = 0; i < n; i++)
+    buf[i] = uniform ();
+}
+
+#ifdef LV_HAVE_SSE
+void qa_32f_power_aligned16::t1() {
+
+  
+  volk_runtime_init();
+
+  const int vlen = 2046;
+  const int ITERS = 10000;
+
+  volk_environment_init();
+  int ret;
+  clock_t start, end;
+  double total;
+  float* input;
+  int i;
+  
+  float* result_generic;
+  float* result_sse;
+  float* result_sse4_1;
+
+  ret = posix_memalign((void**)&input, 16, vlen *  sizeof(float));
+  ret = posix_memalign((void**)&result_generic, 16, vlen * sizeof(float));
+  ret = posix_memalign((void**)&result_sse, 16, vlen * sizeof(float));
+  ret = posix_memalign((void**)&result_sse4_1, 16, vlen * sizeof(float));
+
+  random_floats((float*)input, vlen);
+
+  const float power = 3;
+  
+  printf("32f_power_aligned16\n");
+
+  start = clock();
+  for(int count = 0; count < ITERS; ++count) {
+    volk_32f_power_aligned16_manual(result_generic, input, power, 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) {
+    volk_32f_power_aligned16_manual(result_sse, input, power, vlen,  "sse");
+  }
+  end = clock();
+  total = (double)(end-start)/(double)CLOCKS_PER_SEC;
+  printf("sse_time: %f\n", total);
+
+  start = clock();
+  for(int count = 0; count < ITERS; ++count) {
+    get_volk_runtime()->volk_32f_power_aligned16(result_sse4_1, input, power, vlen);
+  }
+  end = clock();
+  total = (double)(end-start)/(double)CLOCKS_PER_SEC;
+  printf("sse4.1_time: %f\n", total);
+
+
+  for(i = 0; i < vlen; i++){
+    //printf("%d %e -> %e %e %e\n", i, input[i], result_generic[i], result_sse[i], result_sse4_1[i]);
+    CPPUNIT_ASSERT_DOUBLES_EQUAL(result_generic[i], result_sse[i], fabs(result_generic[i])* ERR_DELTA);
+    CPPUNIT_ASSERT_DOUBLES_EQUAL(result_generic[i], result_sse4_1[i], fabs(result_generic[i])* ERR_DELTA);
+  }
+
+  free(input);
+  free(result_generic);
+  free(result_sse);
+  
+}
+#else
+void qa_32f_power_aligned16::t1() {
+  printf("sse not available... no test performed\n");
+}
+
+#endif /* LV_HAVE_SSE */
+