1 files changed, 88 insertions, 0 deletions
diff --git a/Godeps/_workspace/src/github.com/ethereum/ethash/libethash/ethash.h b/Godeps/_workspace/src/github.com/ethereum/ethash/libethash/ethash.h
new file mode 100644
index 000000000..62edd0082
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/ethereum/ethash/libethash/ethash.h
@@ -0,0 +1,88 @@
+/*
+  This file is part of cpp-ethereum.
+
+  cpp-ethereum is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  cpp-ethereum is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file ethash.h
+* @date 2015
+*/
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+#include <stddef.h>
+#include "compiler.h"
+
+#define REVISION 18
+#define DAGSIZE_BYTES_INIT 1073741824U
+#define DAG_GROWTH 113000000U
+#define EPOCH_LENGTH 30000U
+#define MIX_BYTES 128
+#define DAG_PARENTS 256
+#define CACHE_ROUNDS 3
+#define ACCESSES 64
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct ethash_params {
+    size_t full_size;               // Size of full data set (in bytes, multiple of mix size (128)).
+    size_t cache_size;              // Size of compute cache (in bytes, multiple of node size (64)).
+} ethash_params;
+
+typedef struct ethash_return_value {
+    uint8_t result[32];
+    uint8_t mix_hash[32];
+} ethash_return_value;
+
+size_t const ethash_get_datasize(const uint32_t block_number);
+size_t const ethash_get_cachesize(const uint32_t block_number);
+
+// initialize the parameters
+static inline void ethash_params_init(ethash_params *params, const uint32_t block_number) {
+    params->full_size = ethash_get_datasize(block_number);
+    params->cache_size = ethash_get_cachesize(block_number);
+}
+
+typedef struct ethash_cache {
+    void *mem;
+} ethash_cache;
+
+void ethash_mkcache(ethash_cache *cache, ethash_params const *params, const uint8_t seed[32]);
+void ethash_compute_full_data(void *mem, ethash_params const *params, ethash_cache const *cache);
+void ethash_full(ethash_return_value *ret, void const *full_mem, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce);
+void ethash_light(ethash_return_value *ret, ethash_cache const *cache, ethash_params const *params, const uint8_t header_hash[32], const uint64_t nonce);
+
+static inline int ethash_check_difficulty(
+        const uint8_t hash[32],
+        const uint8_t difficulty[32]) {
+    // Difficulty is big endian
+    for (int i = 0; i < 32; i++) {
+        if (hash[i] == difficulty[i]) continue;
+        return hash[i] < difficulty[i];
+    }
+    return 0;
+}
+
+int ethash_quick_check_difficulty(
+        const uint8_t header_hash[32],
+        const uint64_t nonce,
+        const uint8_t mix_hash[32],
+        const uint8_t difficulty[32]);
+
+#ifdef __cplusplus
+}
+#endif