progminer zano miner fork https://github.com/hyle-team/progminer

zano/libethash/ethash/ethash.h

@@ -0,0 +1,99 @@
+/* ethash: C/C++ implementation of Ethash, the Ethereum Proof of Work algorithm.
+ * Copyright 2018 Pawel Bylica.
+ * Licensed under the Apache License, Version 2.0. See the LICENSE file.
+ */
+
+#pragma once
+
+#include <ethash/hash_types.h>
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+#define NOEXCEPT noexcept
+#else
+#define NOEXCEPT
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * The Ethash algorithm revision implemented as specified in the Ethash spec
+ * https://github.com/ethereum/wiki/wiki/Ethash.
+ */
+#define ETHASH_REVISION "23"
+
+#define ETHASH_EPOCH_LENGTH 30000
+#define ETHASH_LIGHT_CACHE_ITEM_SIZE 64
+#define ETHASH_FULL_DATASET_ITEM_SIZE 128
+#define ETHASH_NUM_DATASET_ACCESSES 64
+
+
+struct ethash_epoch_context
+{
+    const int epoch_number;
+    const int light_cache_num_items;
+    const union ethash_hash512* const light_cache;
+    const uint32_t* const l1_cache;
+    const int full_dataset_num_items;
+};
+
+
+struct ethash_epoch_context_full;
+
+
+/**
+ * Calculates the number of items in the light cache for given epoch.
+ *
+ * This function will search for a prime number matching the criteria given
+ * by the Ethash so the execution time is not constant. It takes ~ 0.01 ms.
+ *
+ * @param epoch_number  The epoch number.
+ * @return              The number items in the light cache.
+ */
+int ethash_calculate_light_cache_num_items(int epoch_number) NOEXCEPT;
+
+
+/**
+ * Calculates the number of items in the full dataset for given epoch.
+ *
+ * This function will search for a prime number matching the criteria given
+ * by the Ethash so the execution time is not constant. It takes ~ 0.05 ms.
+ *
+ * @param epoch_number  The epoch number.
+ * @return              The number items in the full dataset.
+ */
+int ethash_calculate_full_dataset_num_items(int epoch_number) NOEXCEPT;
+
+/**
+ * Calculates the epoch seed hash.
+ * @param epoch_number  The epoch number.
+ * @return              The epoch seed hash.
+ */
+union ethash_hash256 ethash_calculate_epoch_seed(int epoch_number) NOEXCEPT;
+
+
+struct ethash_epoch_context* ethash_create_epoch_context(int epoch_number) NOEXCEPT;
+
+/**
+ * Creates the epoch context with the full dataset initialized.
+ *
+ * The memory for the full dataset is only allocated and marked as "not-generated".
+ * The items of the full dataset are generated on the fly when hit for the first time.
+ *
+ * The memory allocated in the context MUST be freed with ethash_destroy_epoch_context_full().
+ *
+ * @param epoch_number  The epoch number.
+ * @return  Pointer to the context or null in case of memory allocation failure.
+ */
+struct ethash_epoch_context_full* ethash_create_epoch_context_full(int epoch_number) NOEXCEPT;
+
+void ethash_destroy_epoch_context(struct ethash_epoch_context* context) NOEXCEPT;
+
+void ethash_destroy_epoch_context_full(struct ethash_epoch_context_full* context) NOEXCEPT;
+
+#ifdef __cplusplus
+}
+#endif