| #include <metal_stdlib> | 
 | using namespace metal; | 
 |  | 
 | template<typename T, size_t N> | 
 | struct tint_array { | 
 |   const constant T& operator[](size_t i) const constant { return elements[i]; } | 
 |   device T& operator[](size_t i) device { return elements[i]; } | 
 |   const device T& operator[](size_t i) const device { return elements[i]; } | 
 |   thread T& operator[](size_t i) thread { return elements[i]; } | 
 |   const thread T& operator[](size_t i) const thread { return elements[i]; } | 
 |   threadgroup T& operator[](size_t i) threadgroup { return elements[i]; } | 
 |   const threadgroup T& operator[](size_t i) const threadgroup { return elements[i]; } | 
 |   T elements[N]; | 
 | }; | 
 |  | 
 | struct tint_module_vars_struct { | 
 |   device tint_array<uint, 1>* a; | 
 | }; | 
 |  | 
 | void tint_symbol(tint_module_vars_struct tint_module_vars) { | 
 |   (*tint_module_vars.a)[1] = ((*tint_module_vars.a)[1] - 1u); | 
 | } |