test built-in function "bitselect"

Signed-off-by: Homer Hsing <homer.xing@intel.com>
Reviewed-by: Yang, Rong <rong.r.yang@intel.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/utests/builtin_bitselect.cpp b/utests/builtin_bitselect.cpp
new file mode 100644
index 00000000..37fb8df2
--- /dev/null
+++ b/utests/builtin_bitselect.cpp
@@ -0,0 +1,50 @@
+#include "utest_helper.hpp"
+
+int as_int(float f) {
+  void *p = &f;
+  return *(int *)p;
+}
+
+int cpu(int a, int b, int c) {
+  return (a & ~c) | (b & c);
+}
+
+void builtin_bitselect(void)
+{
+  const int n = 32;
+  float src1[n], src2[n], src3[n];
+
+  // Setup kernel and buffers
+  OCL_CREATE_KERNEL("builtin_bitselect");
+  OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(float), NULL);
+  OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(float), NULL);
+  OCL_CREATE_BUFFER(buf[2], 0, n * sizeof(float), NULL);
+  OCL_CREATE_BUFFER(buf[3], 0, n * sizeof(float), NULL);
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
+  OCL_SET_ARG(2, sizeof(cl_mem), &buf[2]);
+  OCL_SET_ARG(3, sizeof(cl_mem), &buf[3]);
+  globals[0] = n;
+  locals[0] = 16;
+
+  OCL_MAP_BUFFER(0);
+  OCL_MAP_BUFFER(1);
+  OCL_MAP_BUFFER(2);
+  for (int i = 0; i < n; ++i) {
+    src1[i] = ((float*)buf_data[0])[i] = rand() * 0.1f;
+    src2[i] = ((float*)buf_data[1])[i] = rand() * 0.1f;
+    src3[i] = ((float*)buf_data[2])[i] = rand() * 0.1f;
+  }
+  OCL_UNMAP_BUFFER(0);
+  OCL_UNMAP_BUFFER(1);
+  OCL_UNMAP_BUFFER(2);
+
+  OCL_NDRANGE(1);
+
+  OCL_MAP_BUFFER(3);
+  for (int i = 0; i < n; ++i)
+    OCL_ASSERT(((int*)buf_data[3])[i] == cpu(as_int(src1[i]), as_int(src2[i]), as_int(src3[i])));
+  OCL_UNMAP_BUFFER(3);
+}
+
+MAKE_UTEST_FROM_FUNCTION(builtin_bitselect);