eic-opticks/sysrap/srng_traits.h

0001 #pragma once
0002 /**
0003 srng_traits.h : common RNG traits interface
0004 ===========================================
0005
0006 Shared CPU/GPU generation headers should accept an RNG object explicitly
0007 instead of depending on an include-order-selected global RNG alias.
0008
0009 Concrete RNG headers specialize srng<T> and provide uniform accessors.
0010 **/
0011
0012 #if defined(__CUDACC__) || defined(__CUDABE__)
0013 #define SRNG_METHOD __device__
0014 #else
0015 #define SRNG_METHOD inline
0016 #endif
0017
0018 template <typename T> struct srng;
0019
0020 template <typename Rng> SRNG_METHOD float srng_uniform(Rng &rng)
0021 {
0022     return srng<Rng>::uniform(rng);
0023 }
0024
0025 template <typename Rng> SRNG_METHOD double srng_uniform_double(Rng &rng)
0026 {
0027     return srng<Rng>::uniform_double(rng);
0028 }