aura_header.h

#if defined AURA_BASE_OPENCL

    #define AURA_KERNEL __kernel
    #define AURA_DEVMEM __global

    inline float alang_fast_cos(float x)
    {
        return native_cos(x);
    }

#elif defined AURA_BASE_METAL

    #include <metal_stdlib>
    #include <metal_compute>
    #include <metal_math>

    using namespace metal;

    #define AURA_KERNEL kernel
    #define AURA_DEVMEM device

    inline float alang_fast_cos(float x)
    {
        return fast::cos(x);
    }

#endif