fix cmake

Author: kexinzhao

paddle/math/tests/CMakeLists.txt

@@ -18,20 +18,20 @@ add_simple_unittest(test_CpuGpuVector)
 add_simple_unittest(test_Allocator)
 
 if(WITH_GPU)
-    nv_test(test_float16_gpu SRCS test_float16.cu)
     CUDA_ADD_EXECUTABLE(test_Tensor test_Tensor.cu)
     link_paddle_test(test_Tensor)
     CUDA_ADD_EXECUTABLE(test_lazyAssign test_lazyAssign.cu)
-    link_paddle_test(test_lazyAssign) 
+    link_paddle_test(test_lazyAssign)
+    nv_test(test_float16_gpu SRCS test_float16.cu)
 else()
     compile_cu_as_cpp(test_Tensor.cu)
     add_unittest(test_Tensor test_Tensor.cu)
     compile_cu_as_cpp(test_lazyAssign.cu)
     add_unittest(test_lazyAssign test_lazyAssign.cu)
 endif(WITH_GPU)
 
-cc_test(test_float16 SRCS test_float16.cpp)
 add_simple_unittest(test_FPException)
 add_simple_unittest(test_GpuProfiler)
 add_simple_unittest(test_BaseMatrix)
 add_simple_unittest(test_Matrix)
+cc_test(test_float16 SRCS test_float16.cpp)