difficulty calculation, move from randomx to autolykos2

include/autolykos2/autolykos2.h

@@ -0,0 +1,55 @@
+#ifndef MINICOIN_AUTOLYKOS2_H
+#define MINICOIN_AUTOLYKOS2_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct Autolykos2Context Autolykos2Context;
+
+Autolykos2Context* Autolykos2_Create(void);
+void Autolykos2_Destroy(Autolykos2Context* ctx);
+
+bool Autolykos2_DagAllocate(Autolykos2Context* ctx, size_t bytes);
+bool Autolykos2_DagAppend(Autolykos2Context* ctx, const uint8_t* data, size_t len);
+void Autolykos2_DagClear(Autolykos2Context* ctx);
+size_t Autolykos2_DagSize(const Autolykos2Context* ctx);
+
+bool Autolykos2_Hash(
+	Autolykos2Context* ctx,
+	const uint8_t* message,
+	size_t messageLen,
+	uint64_t nonce,
+	uint32_t height,
+	uint8_t outHash[32]
+);
+
+bool Autolykos2_CheckTarget(
+	Autolykos2Context* ctx,
+	const uint8_t message32[32],
+	uint64_t nonce,
+	uint32_t height,
+	const uint8_t target32[32],
+	uint8_t outHash[32]
+);
+
+bool Autolykos2_FindNonceSingleCore(
+	Autolykos2Context* ctx,
+	const uint8_t message32[32],
+	uint32_t height,
+	const uint8_t target32[32],
+	uint64_t startNonce,
+	uint64_t maxIterations,
+	uint64_t* outNonce,
+	uint8_t outHash[32]
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif