test cases for 64-bit float

Signed-off-by: Homer Hsing <homer.xing@intel.com>
Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>
Tested-by: Yang Rong <rong.r.yang@intel.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/utests/compiler_double.cpp b/utests/compiler_double.cpp
new file mode 100644
index 00000000..7c54ddfe
--- /dev/null
+++ b/utests/compiler_double.cpp
@@ -0,0 +1,46 @@
+#include <cmath>
+#include "utest_helper.hpp"
+
+static void cpu(int global_id, double *src, double *dst) {
+  double f = src[global_id];
+  double d = 1.234567890123456789;
+  dst[global_id] = global_id < 14 ? (d * (f + d)) : 14;
+}
+
+void compiler_double(void)
+{
+  const size_t n = 16;
+  double cpu_dst[n], cpu_src[n];
+
+  // Setup kernel and buffers
+  OCL_CREATE_KERNEL("compiler_double");
+  OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(double), NULL);
+  OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(double), NULL);
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
+  globals[0] = n;
+  locals[0] = 16;
+
+  // Run random tests
+  for (uint32_t pass = 0; pass < 1; ++pass) {
+    OCL_MAP_BUFFER(0);
+    for (int32_t i = 0; i < (int32_t) n; ++i)
+      cpu_src[i] = ((double*)buf_data[0])[i] = .1f * (rand() & 15) - .75f;
+    OCL_UNMAP_BUFFER(0);
+
+    // Run the kernel on GPU
+    OCL_NDRANGE(1);
+
+    // Run on CPU
+    for (int32_t i = 0; i < (int32_t) n; ++i)
+      cpu(i, cpu_src, cpu_dst);
+
+    // Compare
+    OCL_MAP_BUFFER(1);
+    for (int32_t i = 0; i < (int32_t) n; ++i)
+      OCL_ASSERT(fabs(((double*)buf_data[1])[i] - cpu_dst[i]) < 1e-4);
+    OCL_UNMAP_BUFFER(1);
+  }
+}
+
+MAKE_UTEST_FROM_FUNCTION(compiler_double);