Merge pull request chfast#135 from chfast/hash_types

hash_types: Allow viewing hashes as char-strings

Author: chfast

include/ethash/hash_types.h

@@ -16,13 +16,15 @@ union ethash_hash256
     uint64_t word64s[4];
     uint32_t word32s[8];
     uint8_t bytes[32];
+    char str[32];
 };
 
 union ethash_hash512
 {
     uint64_t word64s[8];
     uint32_t word32s[16];
     uint8_t bytes[64];
+    char str[64];
 };
 
 union ethash_hash1024
@@ -31,6 +33,7 @@ union ethash_hash1024
     uint64_t word64s[16];
     uint32_t word32s[32];
     uint8_t bytes[128];
+    char str[128];
 };
 
 union ethash_hash2048
@@ -39,6 +42,7 @@ union ethash_hash2048
     uint64_t word64s[32];
     uint32_t word32s[64];
     uint8_t bytes[256];
+    char str[256];
 };
 
 #ifdef __cplusplus