From 1694c558df3cf7f34e42f3db62c83931117c9b00 Mon Sep 17 00:00:00 2001
From: Lefteris Karapetsas <lefteris@refu.co>
Date: Wed, 8 Apr 2015 11:56:04 +0200
Subject: [PATCH] Keep part of the old API for smoother transition

---
 ethash.h   | 23 ++++++++++++++++++++++-
 internal.c | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 55 insertions(+), 1 deletion(-)

diff --git a/ethash.h b/ethash.h
index a6bbe97a1..121ba12a2 100644
--- a/ethash.h
+++ b/ethash.h
@@ -45,7 +45,7 @@ extern "C" {
 // LTODO: for consistency's sake maybe use ethash_params_t?
 typedef struct ethash_params {
     /// Size of full data set (in bytes, multiple of mix size (128)).
-    int64_t full_size;
+    uint64_t full_size;
     /// Size of compute cache (in bytes, multiple of node size (64)).
     uint64_t cache_size;
 } ethash_params;
@@ -208,6 +208,27 @@ int ethash_quick_check_difficulty(ethash_h256_t const *header_hash,
                                   ethash_h256_t const *mix_hash,
                                   ethash_h256_t const *difficulty);
 
+
+/**
+ * =========================
+ * =    DEPRECATED API     =
+ * =========================
+ *
+ * Kept for backwards compatibility with whoever still uses it. Please consider
+ * switching to the new API (look above)
+ */
+void ethash_mkcache(ethash_cache *cache, ethash_params const *params, ethash_h256_t const *seed);
+void ethash_full(ethash_return_value *ret,
+                 void const *full_mem,
+                 ethash_params const *params,
+                 ethash_h256_t const *header_hash,
+                 const uint64_t nonce);
+void ethash_light(ethash_return_value *ret,
+                  ethash_cache const *cache,
+                  ethash_params const *params,
+                  ethash_h256_t const *header_hash,
+                  const uint64_t nonce);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/internal.c b/internal.c
index 03dc8eb25..181bf4f4b 100644
--- a/internal.c
+++ b/internal.c
@@ -411,3 +411,36 @@ bool ethash_full_compute(ethash_return_value *ret,
                        nonce,
                        full->callback);
 }
+
+
+/**
+ * =========================
+ * =    DEPRECATED API     =
+ * =========================
+ *
+ * Kept for backwards compatibility with whoever still uses it. Please consider
+ * switching to the new API (look above)
+ */
+void ethash_mkcache(ethash_cache *cache,
+                    ethash_params const *params,
+                    ethash_h256_t const* seed)
+{
+    node *nodes = (node*) cache->mem;
+    ethash_compute_cache_nodes(nodes, params, seed);
+}
+void ethash_full(ethash_return_value *ret,
+                 void const *full_mem,
+                 ethash_params const *params,
+                 ethash_h256_t const *header_hash,
+                 const uint64_t nonce)
+{
+    ethash_hash(ret, (node const *) full_mem, NULL, params, header_hash, nonce, NULL);
+}
+void ethash_light(ethash_return_value *ret,
+                  ethash_cache const *cache,
+                  ethash_params const *params,
+                  ethash_h256_t const *header_hash,
+                  const uint64_t nonce)
+{
+    ethash_hash(ret, NULL, cache, params, header_hash, nonce, NULL);
+}