ethash: Expose hash() function in C API

Author: chfast

include/ethash/ethash.h

@@ -113,6 +113,10 @@ const struct ethash_epoch_context* ethash_get_global_epoch_context(int epoch_num
 const struct ethash_epoch_context_full* ethash_get_global_epoch_context_full(
     int epoch_number) NOEXCEPT;
 
+
+struct ethash_result ethash_hash(const struct ethash_epoch_context* context,
+    const union ethash_hash256* header_hash, uint64_t nonce) NOEXCEPT;
+
 #ifdef __cplusplus
 }
 #endif

include/ethash/ethash.hpp

@@ -120,7 +120,11 @@ inline epoch_context_full_ptr create_epoch_context_full(int epoch_number) noexce
 }
 
 
-result hash(const epoch_context& context, const hash256& header_hash, uint64_t nonce) noexcept;
+inline result hash(
+    const epoch_context& context, const hash256& header_hash, uint64_t nonce) noexcept
+{
+    return ethash_hash(&context, &header_hash, nonce);
+}
 
 result hash(const epoch_context_full& context, const hash256& header_hash, uint64_t nonce) noexcept;
 

lib/ethash/ethash.cpp

@@ -303,13 +303,6 @@ inline hash256 hash_kernel(
 }
 }  // namespace
 
-result hash(const epoch_context& context, const hash256& header_hash, uint64_t nonce) noexcept
-{
-    const hash512 seed = hash_seed(header_hash, nonce);
-    const hash256 mix_hash = hash_kernel(context, seed, calculate_dataset_item_1024);
-    return {hash_final(seed, mix_hash), mix_hash};
-}
-
 result hash(const epoch_context_full& context, const hash256& header_hash, uint64_t nonce) noexcept
 {
     static const auto lazy_lookup = [](const epoch_context& ctx, uint32_t index) noexcept
@@ -438,4 +431,12 @@ void ethash_destroy_epoch_context(epoch_context* context) noexcept
     std::free(context);
 }
 
+ethash_result ethash_hash(
+    const epoch_context* context, const hash256* header_hash, uint64_t nonce) noexcept
+{
+    const hash512 seed = hash_seed(*header_hash, nonce);
+    const hash256 mix_hash = hash_kernel(*context, seed, calculate_dataset_item_1024);
+    return {hash_final(seed, mix_hash), mix_hash};
+}
+
 }  // extern "C"