C - C++ interop working

lean/include/panic.h

@@ -17,7 +17,7 @@ void _do_panic(struct panicinfo pi, const char* fmt, ...) __attribute__((noretur
 extern "C++" {
 #include <utility>
 	template<typename... Args>
-	__attribute__((noreturn)) inline void _real_panic(const char* file, const char* function, int line, const char* fmt, const Args&... args)
+	__attribute__((noreturn)) inline void _real_panic(const char* file, const char* function, int line, const char* fmt, Args&&... args)
 	{
 		panicinfo i = { file, function, line };
 		_do_panic(i, fmt, std::forward<Args>(args)...);

lean/include/rng.h

@@ -1,16 +1,44 @@
 #ifndef _RNG_H
 #define _RNG_H
 
+#include "shuffle3.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-// Tests
-void frng_test();
-void xorng_test();
-void drng_test();
+enum rng_kind {
+	RNG_KIND_FRNG,
+	RNG_KIND_DRNG,
+	RNG_KIND_XORNG,
+};
+
+typedef struct rng_init
+{
+	enum rng_kind kind;
+	union {
+		struct {
+			double state[2];
+		} frng;
+		struct {
+			int32_t state;
+		} drng;
+		struct {
+			uint64_t state[2];
+		} xorng;	
+	} init;
+
+} rng_init_opt;
 
-void rng_test();
+typedef struct rng_impl* _UNIQUE rng_t;
+
+rng_t rng_new(rng_init_opt kind);
+#define RNG_INIT(_kind,...) ((rng_init_opt){.kind=(_kind), .init.__VA_ARGS__ })
+void  rng_free(rng_t ptr);
+
+// Tests
+extern void rng_test();
+extern void rng_test_spec(rng_t rng);
 
 #ifdef __cplusplus
 }

lean/include/rng/impl.hpp

@@ -28,6 +28,8 @@ struct RNG {
 
 	inline virtual float  next_float() { return (float)sample(); }
 	inline virtual double next_double() { return sample(); }
+
+	virtual ~RNG() = default;
 protected:
 	virtual double sample() = 0;
 };

lean/src/main.c

@@ -44,9 +44,10 @@ int main(int argc, char** argv)
 	struct prog_args args = {.argc = argc, .argv = argv};
 	
 	rng_test();
-	//frng_test();
-	//xorng_test();
-	//drng_test();
+	
+	rng_t r = rng_new(RNG_INIT(RNG_KIND_FRNG, frng = { { 1.0, 2.0 } }));
+	rng_test_spec(r);
+	rng_free(r);
 
 	if( argv[1] ) {
 		map_and_then(argv[1], &map_callback, &args);
@@ -56,7 +57,7 @@ int main(int argc, char** argv)
 }
 
 #ifdef _TEST
-static void do_test()
+static void do_reinterpret_test()
 {
 	char* string = "Hello world.. how are you?????";
 	size_t string_sz = strlen(string);

lean/src/rng.cpp

@@ -1,6 +1,7 @@
+#include <iostream>
+#include <cmath>
 
 #include <rng/impl.hpp>
-#include <cmath>
 
 inline unsigned char RNG::byte()
 {
@@ -45,3 +46,47 @@ std::int64_t RNG::next_long()
 {
 	return (chance() ? 1l : -1l) * (std::int64_t)floor(sample() * (double)INT64_MAX);
 }
+
+#include <rng.h>
+#include <panic.h>
+namespace { // C interface
+	using namespace std;
+#define extract_ptr(ptr) ((RNG*)(ptr))
+	static inline RNG& extract_ref(rng_t rng)
+	{
+		return *extract_ptr(rng);
+	}
+	template<typename T>
+		static inline T* extract_downcast_ptr(rng_t rng)
+		{
+			return dynamic_cast<T*>(extract_ptr(rng));
+		}
+
+	extern "C" 
+	{
+
+		rng_t rng_new(rng_init_opt opt)
+		{
+			switch(opt.kind)
+			{
+				case RNG_KIND_FRNG:  return (rng_t) new rng::frng(opt.init.frng.state);
+				case RNG_KIND_DRNG:  return (rng_t) new rng::drng(opt.init.drng.state);
+				case RNG_KIND_XORNG: return (rng_t) new rng::xoroshiro128plus(opt.init.xorng.state);
+				default: panic("Unknown RNG init opt: %d", opt.kind);
+			}
+			return nullptr;
+		}
+
+		void rng_free(rng_t rng)
+		{
+			RNG* ptr = (RNG*)rng;
+			delete ptr;
+		}
+
+		void rng_test_spec(rng_t rng)
+		{
+			cout << "rng_test_spec:" << endl;
+			rng::test_algo(std::move(extract_ref(rng)));	
+		}
+	}
+}

lean/src/rng/drng.cpp

@@ -6,26 +6,6 @@
 
 namespace rng
 {
-	static inline void d_test()
-	{
-		using namespace std;
-		drng rng(100);
-
-		for(int i=0;i<10;i++) {
-			double d = rng.next_double();
-			long l = rng.next_long(-10, 10);
-
-			std::array<bool, 10> ar;
-			for(auto& i : ar) i = rng.chance();
-
-			cout << "D Sampled: " << d << endl; 
-			cout << "D Long: " << l << endl;
-			cout << "D Bools: [ ";
-			for(const auto& i : ar) cout << i << " ";
-			cout << "]" << endl;
-		}
-	}
-
 	drng drng::from_time() { return drng(time(NULL)); }
 
 	int drng::rand()
@@ -39,8 +19,3 @@ namespace rng
 		return (double)val / (double)RAND_MAX;
 	}
 }
-
-extern "C" void drng_test()
-{
-	return rng::d_test();
-}

lean/src/rng/frng.cpp

@@ -1,31 +1,3 @@
 #include <rng/impl.hpp>
 #include <rng/frng.hpp>
 #include <iostream>
-
-namespace rng {	
-	using namespace std;
-	static inline void f_test()
-	{
-		frng rng(1.0, 2.0);
-
-		for(int i=0;i<10;i++) {
-			double d = rng.next_double();
-			long l = rng.next_long(-10, 10);
-
-			std::array<bool, 10> ar;
-			for(auto& i : ar) i = rng.chance();
-
-			cout << "Sampled: " << d << endl; 
-			cout << "Long: " << l << endl;
-			cout << "Bools: [ ";
-			for(const auto& i : ar) cout << i << " ";
-			cout << "]" << endl;
-		}
-	}
-}
-
-
-extern "C" void frng_test()
-{
-	rng::f_test();
-}

lean/src/rng/test.cpp

@@ -32,6 +32,6 @@ extern "C" void rng_test()
 	cout << "drng:" << endl;
 	rng::test_algo(rng::drng(10));
 
-	cout << "xoroshiro128+" << endl;
+	cout << "xoroshiro128+:" << endl;
 	rng::test_algo(rng::xoroshiro128plus(100ul, 200ul));
 }

lean/src/rng/xoroshiro128plus.cpp

@@ -12,26 +12,6 @@ static inline constexpr u64 rotl(u64 x, int k)
 
 namespace rng
 {
-	static inline void xo_test()
-	{
-		using namespace std;
-		XO rng(100ul, 123123123ul);
-
-		for(int i=0;i<10;i++) {
-			double d = rng.next_double();
-			long l = rng.next_long(-10, 10);
-
-			std::array<bool, 10> ar;
-			for(auto& i : ar) i = rng.chance();
-
-			cout << "XO Sampled: " << d << endl; 
-			cout << "XO Long: " << l << endl;
-			cout << "XO Bools: [ ";
-			for(const auto& i : ar) cout << i << " ";
-			cout << "]" << endl;
-		}
-	}
-
 	inline constexpr u64 next(XO::State& s)
 	{
 		u64 s0 = s[0];
@@ -104,8 +84,3 @@ namespace rng
 		return (next(state) & ((INT64_C(1) << 53) - 1)) * (1.00 / (INT64_C(1) << 53));
 	}
 }
-
-extern "C" void xorng_test()
-{
-	return rng::xo_test();
-}