libclc/generic/include/clc/math/exp2.h - third_party/llvm-project - Git at Google

 #undef exp2
 #define exp2 __clc_exp2

 #define FUNCTION __clc_exp2
 #define INTRINSIC "llvm.exp2"
 #include <clc/math/unary_intrin.inc>
	#undef exp2
	#define exp2 __clc_exp2

	#define FUNCTION __clc_exp2
	#define INTRINSIC "llvm.exp2"
	#include <clc/math/unary_intrin.inc>