Added support for various math functions

1 files changed, 55 insertions, 0 deletions

diff --git a/utests/compiler_math.cpp b/utests/compiler_math.cpp
new file mode 100644
index 00000000..7303dd5f
--- /dev/null
+++ b/utests/compiler_math.cpp
@@ -0,0 +1,55 @@
+#include "utest_helper.hpp"
+#include <cmath>
+#include <algorithm>
+
+static void cpu_compiler_math(float *dst, float *src, int get_global_id0)
+{
+  const float x = src[get_global_id0];
+  switch (get_global_id0) {
+    case 0: dst[get_global_id0] = cosf(x); break;
+    case 1: dst[get_global_id0] = sinf(x); break;
+    case 2: dst[get_global_id0] = log2f(x); break;
+    case 3: dst[get_global_id0] = sqrtf(x); break;
+    case 4: dst[get_global_id0] = 1.f/ sqrtf(x); break;
+    case 5: dst[get_global_id0] = 1.f / x; break;
+    case 6: dst[get_global_id0] = tanf(x); break;
+    default: dst[get_global_id0] = 1.f; break;
+  };
+}
+
+static void compiler_math(void)
+{
+  const size_t n = 32;
+  float cpu_dst[32], cpu_src[32];
+
+  // Setup kernel and buffers
+  OCL_CREATE_KERNEL("compiler_math");
+  OCL_CREATE_BUFFER(buf[0], 0, n * sizeof(uint32_t), NULL);
+  OCL_CREATE_BUFFER(buf[1], 0, n * sizeof(uint32_t), NULL);
+  OCL_SET_ARG(0, sizeof(cl_mem), &buf[0]);
+  OCL_SET_ARG(1, sizeof(cl_mem), &buf[1]);
+  globals[0] = 16;
+  locals[0] = 16;
+
+  OCL_MAP_BUFFER(1);
+  for (uint32_t i = 0; i < 32; ++i)
+    cpu_src[i] = ((float*)buf_data[1])[i] = float(i);
+  OCL_UNMAP_BUFFER(1);
+  OCL_NDRANGE(1);
+
+  OCL_MAP_BUFFER(0);
+  OCL_MAP_BUFFER(1);
+  for (int i = 0; i < 16; ++i)
+    cpu_compiler_math(cpu_dst, cpu_src, i);
+  for (int i = 0; i < 16; ++i) {
+    const float cpu = cpu_dst[i];
+    const float gpu = ((float*)buf_data[0])[i];
+    OCL_ASSERT(fabs(gpu-cpu)/std::max(fabs(cpu), fabs(gpu)) < 1e-4f);
+  }
+  OCL_UNMAP_BUFFER(0);
+  OCL_UNMAP_BUFFER(1);
+}
+
+MAKE_UTEST_FROM_FUNCTION(compiler_math)
+
+