[Beignet] [PATCH] Fix atomic_xchg float type error.

[Yang Rong]

Also refine the "\" of some atomic macro.

Signed-off-by: Yang Rong <rong.r.yang at intel.com>
---
 backend/src/ocl_stdlib.tmpl.h | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/backend/src/ocl_stdlib.tmpl.h b/backend/src/ocl_stdlib.tmpl.h
index f3d2a8e..8e8c042 100644
--- a/backend/src/ocl_stdlib.tmpl.h
+++ b/backend/src/ocl_stdlib.tmpl.h
@@ -2022,10 +2022,10 @@ OVERLOADABLE uint __gen_ocl_atomic_umax(__local uint *p, uint val);
 
 #define DECL_ATOMIC_OP_TYPE(NAME, TYPE, PREFIX) \
   DECL_ATOMIC_OP_SPACE(NAME, TYPE, __global, PREFIX) \
-  DECL_ATOMIC_OP_SPACE(NAME, TYPE, __local, PREFIX) \
+  DECL_ATOMIC_OP_SPACE(NAME, TYPE, __local, PREFIX)
 
 #define DECL_ATOMIC_OP(NAME) \
-  DECL_ATOMIC_OP_TYPE(NAME, uint, atomic_)              \
+  DECL_ATOMIC_OP_TYPE(NAME, uint, atomic_)        \
   DECL_ATOMIC_OP_TYPE(NAME, int, atomic_)
 
 DECL_ATOMIC_OP(add)
@@ -2034,12 +2034,20 @@ DECL_ATOMIC_OP(and)
 DECL_ATOMIC_OP(or)
 DECL_ATOMIC_OP(xor)
 DECL_ATOMIC_OP(xchg)
-DECL_ATOMIC_OP_TYPE(xchg, float, atomic_)
 DECL_ATOMIC_OP_TYPE(min, int, atomic_i)
 DECL_ATOMIC_OP_TYPE(max, int, atomic_i)
 DECL_ATOMIC_OP_TYPE(min, uint, atomic_u)
 DECL_ATOMIC_OP_TYPE(max, uint, atomic_u)
 
+#undef DECL_ATOMIC_OP_SPACE
+
+#define DECL_ATOMIC_OP_SPACE(NAME, TYPE, SPACE, PREFIX)                        \
+  INLINE_OVERLOADABLE TYPE atomic_##NAME (volatile SPACE TYPE *p, TYPE val) { \
+    return as_float(__gen_ocl_##PREFIX##NAME((SPACE uint *)p, as_uint(val))); \
+  }
+DECL_ATOMIC_OP_SPACE(xchg, float, __global, atomic_)
+DECL_ATOMIC_OP_SPACE(xchg, float, __local, atomic_)
+
 #undef DECL_ATOMIC_OP
 #undef DECL_ATOMIC_OP_TYPE
 #undef DECL_ATOMIC_OP_SPACE
-- 
1.8.1.2