Fix conflict resolution in libclc

Author: jsji

libclc/generic/lib/clcmacro.h

@@ -140,7 +140,6 @@
     return (RET_TYPE##16)(FUNCTION(x, y, z.lo), FUNCTION(x, y, z.hi));         \
   }
 
-
 #define _CLC_V_V_VP_VECTORIZE(DECLSPEC, RET_TYPE, FUNCTION, ARG1_TYPE,         \
                               ADDR_SPACE, ARG2_TYPE)                           \
   DECLSPEC RET_TYPE##2 FUNCTION(ARG1_TYPE##2 x, ADDR_SPACE ARG2_TYPE##2 * y) { \

libclc/generic/lib/math/clc_ldexp.cl

@@ -126,3 +126,15 @@ _CLC_DEF _CLC_OVERLOAD double __clc_ldexp(double x, int n) {
 }
 
 #endif
+
+#ifdef cl_khr_fp16
+
+#pragma OPENCL EXTENSION cl_khr_fp16 : enable
+
+_CLC_OVERLOAD _CLC_DEF half __clc_ldexp(half x, int n) {
+    return (half)__clc_ldexp((float)x, n);
+}
+
+_CLC_BINARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, half, __clc_ldexp, half, int);
+
+#endif