Merge pull request #34 from Cyan4973/devr124

LZ4 HC Streaming

1 files changed, 291 insertions, 169 deletions

diff --git a/xxhash.c b/xxhash.c
index be48370..e6c2f31 100644
--- a/xxhash.c
+++ b/xxhash.c
@@ -28,6 +28,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 You can contact the author at :
 - xxHash source repository : http://code.google.com/p/xxhash/
+- public discussion board : https://groups.google.com/forum/#!forum/lz4c
 */
 
 
@@ -80,14 +81,17 @@ You can contact the author at :
 // Includes & Memory related functions
 //**************************************
 #include "xxhash.h"
-// Modify the local functions below should you wish to use some other memory related routines
+// Modify the local functions below should you wish to use some other memory routines
 // for malloc(), free()
 #include <stdlib.h>
 FORCE_INLINE void* XXH_malloc(size_t s) { return malloc(s); }
 FORCE_INLINE void  XXH_free  (void* p)  { free(p); }
 // for memcpy()
 #include <string.h>
-FORCE_INLINE void* XXH_memcpy(void* dest, const void* src, size_t size) { return memcpy(dest,src,size); }
+FORCE_INLINE void* XXH_memcpy(void* dest, const void* src, size_t size)
+{
+    return memcpy(dest,src,size);
+}
 
 
 //**************************************
@@ -95,17 +99,17 @@ FORCE_INLINE void* XXH_memcpy(void* dest, const void* src, size_t size) { return
 //**************************************
 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L   // C99
 # include <stdint.h>
-  typedef uint8_t  BYTE;
-  typedef uint16_t U16;
-  typedef uint32_t U32;
-  typedef  int32_t S32;
-  typedef uint64_t U64;
+typedef uint8_t  BYTE;
+typedef uint16_t U16;
+typedef uint32_t U32;
+typedef  int32_t S32;
+typedef uint64_t U64;
 #else
-  typedef unsigned char      BYTE;
-  typedef unsigned short     U16;
-  typedef unsigned int       U32;
-  typedef   signed int       S32;
-  typedef unsigned long long U64;
+typedef unsigned char      BYTE;
+typedef unsigned short     U16;
+typedef unsigned int       U32;
+typedef   signed int       S32;
+typedef unsigned long long U64;
 #endif
 
 #if defined(__GNUC__)  && !defined(XXH_USE_UNALIGNED_ACCESS)
@@ -122,8 +126,14 @@ FORCE_INLINE void* XXH_memcpy(void* dest, const void* src, size_t size) { return
 #  endif
 #endif
 
-typedef struct _U32_S { U32 v; } _PACKED U32_S;
-typedef struct _U64_S { U64 v; } _PACKED U64_S;
+typedef struct _U32_S
+{
+    U32 v;
+} _PACKED U32_S;
+typedef struct _U64_S
+{
+    U64 v;
+} _PACKED U64_S;
 
 #if !defined(XXH_USE_UNALIGNED_ACCESS) && !defined(__GNUC__)
 #  pragma pack(pop)
@@ -154,12 +164,15 @@ typedef struct _U64_S { U64 v; } _PACKED U64_S;
 #  define XXH_swap32 __builtin_bswap32
 #  define XXH_swap64 __builtin_bswap64
 #else
-static inline U32 XXH_swap32 (U32 x) {
+static inline U32 XXH_swap32 (U32 x)
+{
     return  ((x << 24) & 0xff000000 ) |
-			((x <<  8) & 0x00ff0000 ) |
-			((x >>  8) & 0x0000ff00 ) |
-			((x >> 24) & 0x000000ff );}
-static inline U64 XXH_swap64 (U64 x) {
+            ((x <<  8) & 0x00ff0000 ) |
+            ((x >>  8) & 0x0000ff00 ) |
+            ((x >> 24) & 0x000000ff );
+}
+static inline U64 XXH_swap64 (U64 x)
+{
     return  ((x << 56) & 0xff00000000000000ULL) |
             ((x << 40) & 0x00ff000000000000ULL) |
             ((x << 24) & 0x0000ff0000000000ULL) |
@@ -167,7 +180,8 @@ static inline U64 XXH_swap64 (U64 x) {
             ((x >> 8)  & 0x00000000ff000000ULL) |
             ((x >> 24) & 0x0000000000ff0000ULL) |
             ((x >> 40) & 0x000000000000ff00ULL) |
-            ((x >> 56) & 0x00000000000000ffULL);}
+            ((x >> 56) & 0x00000000000000ffULL);
+}
 #endif
 
 
@@ -191,7 +205,7 @@ static inline U64 XXH_swap64 (U64 x) {
 //**************************************
 typedef enum { XXH_bigEndian=0, XXH_littleEndian=1 } XXH_endianess;
 #ifndef XXH_CPU_LITTLE_ENDIAN   // It is possible to define XXH_CPU_LITTLE_ENDIAN externally, for example using a compiler switch
-    static const int one = 1;
+static const int one = 1;
 #   define XXH_CPU_LITTLE_ENDIAN   (*(char*)(&one))
 #endif
 
@@ -215,7 +229,10 @@ FORCE_INLINE U32 XXH_readLE32_align(const U32* ptr, XXH_endianess endian, XXH_al
         return endian==XXH_littleEndian ? *ptr : XXH_swap32(*ptr);
 }
 
-FORCE_INLINE U32 XXH_readLE32(const U32* ptr, XXH_endianess endian) { return XXH_readLE32_align(ptr, endian, XXH_unaligned); }
+FORCE_INLINE U32 XXH_readLE32(const U32* ptr, XXH_endianess endian)
+{
+    return XXH_readLE32_align(ptr, endian, XXH_unaligned);
+}
 
 FORCE_INLINE U64 XXH_readLE64_align(const U64* ptr, XXH_endianess endian, XXH_alignment align)
 {
@@ -225,13 +242,16 @@ FORCE_INLINE U64 XXH_readLE64_align(const U64* ptr, XXH_endianess endian, XXH_al
         return endian==XXH_littleEndian ? *ptr : XXH_swap64(*ptr);
 }
 
-FORCE_INLINE U64 XXH_readLE64(const U64* ptr, XXH_endianess endian) { return XXH_readLE64_align(ptr, endian, XXH_unaligned); }
+FORCE_INLINE U64 XXH_readLE64(const U64* ptr, XXH_endianess endian)
+{
+    return XXH_readLE64_align(ptr, endian, XXH_unaligned);
+}
 
 
 //****************************
 // Simple Hash Functions
 //****************************
-FORCE_INLINE U32 XXH32_endian_align(const void* input, unsigned int len, U32 seed, XXH_endianess endian, XXH_alignment align)
+FORCE_INLINE U32 XXH32_endian_align(const void* input, size_t len, U32 seed, XXH_endianess endian, XXH_alignment align)
 {
     const BYTE* p = (const BYTE*)input;
     const BYTE* bEnd = p + len;
@@ -239,7 +259,11 @@ FORCE_INLINE U32 XXH32_endian_align(const void* input, unsigned int len, U32 see
 #define XXH_get32bits(p) XXH_readLE32_align((const U32*)p, endian, align)
 
 #ifdef XXH_ACCEPT_NULL_INPUT_POINTER
-    if (p==NULL) { len=0; bEnd=p=(const BYTE*)(size_t)16; }
+    if (p==NULL)
+    {
+        len=0;
+        bEnd=p=(const BYTE*)(size_t)16;
+    }
 #endif
 
     if (len>=16)
@@ -252,11 +276,24 @@ FORCE_INLINE U32 XXH32_endian_align(const void* input, unsigned int len, U32 see
 
         do
         {
-            v1 += XXH_get32bits(p) * PRIME32_2; v1 = XXH_rotl32(v1, 13); v1 *= PRIME32_1; p+=4;
-            v2 += XXH_get32bits(p) * PRIME32_2; v2 = XXH_rotl32(v2, 13); v2 *= PRIME32_1; p+=4;
-            v3 += XXH_get32bits(p) * PRIME32_2; v3 = XXH_rotl32(v3, 13); v3 *= PRIME32_1; p+=4;
-            v4 += XXH_get32bits(p) * PRIME32_2; v4 = XXH_rotl32(v4, 13); v4 *= PRIME32_1; p+=4;
-        } while (p<=limit);
+            v1 += XXH_get32bits(p) * PRIME32_2;
+            v1 = XXH_rotl32(v1, 13);
+            v1 *= PRIME32_1;
+            p+=4;
+            v2 += XXH_get32bits(p) * PRIME32_2;
+            v2 = XXH_rotl32(v2, 13);
+            v2 *= PRIME32_1;
+            p+=4;
+            v3 += XXH_get32bits(p) * PRIME32_2;
+            v3 = XXH_rotl32(v3, 13);
+            v3 *= PRIME32_1;
+            p+=4;
+            v4 += XXH_get32bits(p) * PRIME32_2;
+            v4 = XXH_rotl32(v4, 13);
+            v4 *= PRIME32_1;
+            p+=4;
+        }
+        while (p<=limit);
 
         h32 = XXH_rotl32(v1, 1) + XXH_rotl32(v2, 7) + XXH_rotl32(v3, 12) + XXH_rotl32(v4, 18);
     }
@@ -291,13 +328,14 @@ FORCE_INLINE U32 XXH32_endian_align(const void* input, unsigned int len, U32 see
 }
 
 
-U32 XXH32(const void* input, unsigned int len, U32 seed)
+unsigned int XXH32 (const void* input, size_t len, unsigned seed)
 {
 #if 0
     // Simple version, good for code maintenance, but unfortunately slow for small inputs
-    void* state = XXH32_init(seed);
-    XXH32_update(state, input, len);
-    return XXH32_digest(state);
+    XXH32_state_t state;
+    XXH32_reset(&state, seed);
+    XXH32_update(&state, input, len);
+    return XXH32_digest(&state);
 #else
     XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
 
@@ -318,7 +356,7 @@ U32 XXH32(const void* input, unsigned int len, U32 seed)
 #endif
 }
 
-FORCE_INLINE U64 XXH64_endian_align(const void* input, unsigned int len, U64 seed, XXH_endianess endian, XXH_alignment align)
+FORCE_INLINE U64 XXH64_endian_align(const void* input, size_t len, U64 seed, XXH_endianess endian, XXH_alignment align)
 {
     const BYTE* p = (const BYTE*)input;
     const BYTE* bEnd = p + len;
@@ -326,7 +364,11 @@ FORCE_INLINE U64 XXH64_endian_align(const void* input, unsigned int len, U64 see
 #define XXH_get64bits(p) XXH_readLE64_align((const U64*)p, endian, align)
 
 #ifdef XXH_ACCEPT_NULL_INPUT_POINTER
-    if (p==NULL) { len=0; bEnd=p=(const BYTE*)(size_t)32; }
+    if (p==NULL)
+    {
+        len=0;
+        bEnd=p=(const BYTE*)(size_t)32;
+    }
 #endif
 
     if (len>=32)
@@ -339,25 +381,50 @@ FORCE_INLINE U64 XXH64_endian_align(const void* input, unsigned int len, U64 see
 
         do
         {
-            v1 += XXH_get64bits(p) * PRIME64_2; p+=8; v1 = XXH_rotl64(v1, 31); v1 *= PRIME64_1;
-            v2 += XXH_get64bits(p) * PRIME64_2; p+=8; v2 = XXH_rotl64(v2, 31); v2 *= PRIME64_1;
-            v3 += XXH_get64bits(p) * PRIME64_2; p+=8; v3 = XXH_rotl64(v3, 31); v3 *= PRIME64_1;
-            v4 += XXH_get64bits(p) * PRIME64_2; p+=8; v4 = XXH_rotl64(v4, 31); v4 *= PRIME64_1;
-        } while (p<=limit);
+            v1 += XXH_get64bits(p) * PRIME64_2;
+            p+=8;
+            v1 = XXH_rotl64(v1, 31);
+            v1 *= PRIME64_1;
+            v2 += XXH_get64bits(p) * PRIME64_2;
+            p+=8;
+            v2 = XXH_rotl64(v2, 31);
+            v2 *= PRIME64_1;
+            v3 += XXH_get64bits(p) * PRIME64_2;
+            p+=8;
+            v3 = XXH_rotl64(v3, 31);
+            v3 *= PRIME64_1;
+            v4 += XXH_get64bits(p) * PRIME64_2;
+            p+=8;
+            v4 = XXH_rotl64(v4, 31);
+            v4 *= PRIME64_1;
+        }
+        while (p<=limit);
 
         h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18);
 
-        v1 *= PRIME64_2; v1 = XXH_rotl64(v1, 31); v1 *= PRIME64_1; h64 ^= v1;
-    	h64 = h64 * PRIME64_1 + PRIME64_4;
-
-        v2 *= PRIME64_2; v2 = XXH_rotl64(v2, 31); v2 *= PRIME64_1; h64 ^= v2;
-    	h64 = h64 * PRIME64_1 + PRIME64_4;
-
-        v3 *= PRIME64_2; v3 = XXH_rotl64(v3, 31); v3 *= PRIME64_1; h64 ^= v3;
-    	h64 = h64 * PRIME64_1 + PRIME64_4;
-
-        v4 *= PRIME64_2; v4 = XXH_rotl64(v4, 31); v4 *= PRIME64_1; h64 ^= v4;
-    	h64 = h64 * PRIME64_1 + PRIME64_4;
+        v1 *= PRIME64_2;
+        v1 = XXH_rotl64(v1, 31);
+        v1 *= PRIME64_1;
+        h64 ^= v1;
+        h64 = h64 * PRIME64_1 + PRIME64_4;
+
+        v2 *= PRIME64_2;
+        v2 = XXH_rotl64(v2, 31);
+        v2 *= PRIME64_1;
+        h64 ^= v2;
+        h64 = h64 * PRIME64_1 + PRIME64_4;
+
+        v3 *= PRIME64_2;
+        v3 = XXH_rotl64(v3, 31);
+        v3 *= PRIME64_1;
+        h64 ^= v3;
+        h64 = h64 * PRIME64_1 + PRIME64_4;
+
+        v4 *= PRIME64_2;
+        v4 = XXH_rotl64(v4, 31);
+        v4 *= PRIME64_1;
+        h64 ^= v4;
+        h64 = h64 * PRIME64_1 + PRIME64_4;
     }
     else
     {
@@ -368,22 +435,25 @@ FORCE_INLINE U64 XXH64_endian_align(const void* input, unsigned int len, U64 see
 
     while (p+8<=bEnd)
     {
-    	U64 k1 = XXH_get64bits(p);
-    	k1 *= PRIME64_2; k1 = XXH_rotl64(k1,31); k1 *= PRIME64_1; h64 ^= k1;
-    	h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4;
-    	p+=8;
+        U64 k1 = XXH_get64bits(p);
+        k1 *= PRIME64_2;
+        k1 = XXH_rotl64(k1,31);
+        k1 *= PRIME64_1;
+        h64 ^= k1;
+        h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4;
+        p+=8;
     }
 
     if (p+4<=bEnd)
     {
-    	h64 ^= (U64)(XXH_get32bits(p)) * PRIME64_1;
+        h64 ^= (U64)(XXH_get32bits(p)) * PRIME64_1;
         h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3;
         p+=4;
     }
 
     while (p<bEnd)
     {
-    	h64 ^= (*p) * PRIME64_5;
+        h64 ^= (*p) * PRIME64_5;
         h64 = XXH_rotl64(h64, 11) * PRIME64_1;
         p++;
     }
@@ -398,8 +468,15 @@ FORCE_INLINE U64 XXH64_endian_align(const void* input, unsigned int len, U64 see
 }
 
 
-unsigned long long XXH64(const void* input, unsigned int len, unsigned long long seed)
+unsigned long long XXH64 (const void* input, size_t len, unsigned long long seed)
 {
+#if 0
+    // Simple version, good for code maintenance, but unfortunately slow for small inputs
+    XXH64_state_t state;
+    XXH64_reset(&state, seed);
+    XXH64_update(&state, input, len);
+    return XXH64_digest(&state);
+#else
     XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
 
 #  if !defined(XXH_USE_UNALIGNED_ACCESS)
@@ -416,13 +493,15 @@ unsigned long long XXH64(const void* input, unsigned int len, unsigned long long
         return XXH64_endian_align(input, len, seed, XXH_littleEndian, XXH_unaligned);
     else
         return XXH64_endian_align(input, len, seed, XXH_bigEndian, XXH_unaligned);
+#endif
 }
 
-//****************************
-// Advanced Hash Functions
-//****************************
+/****************************************************
+ *  Advanced Hash Functions
+****************************************************/
 
-struct XXH_state32_t
+/*** Allocation ***/
+typedef struct
 {
     U64 total_len;
     U32 seed;
@@ -430,11 +509,11 @@ struct XXH_state32_t
     U32 v2;
     U32 v3;
     U32 v4;
-    int memsize;
+    U32 memsize;
     char memory[16];
-};
+} XXH_istate32_t;
 
-struct XXH_state64_t
+typedef struct
 {
     U64 total_len;
     U64 seed;
@@ -442,27 +521,39 @@ struct XXH_state64_t
     U64 v2;
     U64 v3;
     U64 v4;
-    int memsize;
+    U32 memsize;
     char memory[32];
-};
+} XXH_istate64_t;
 
 
-int XXH32_sizeofState(void)
+XXH32_state_t* XXH32_createState(void)
 {
-    XXH_STATIC_ASSERT(XXH32_SIZEOFSTATE >= sizeof(struct XXH_state32_t));   // A compilation error here means XXH32_SIZEOFSTATE is not large enough
-    return sizeof(struct XXH_state32_t);
+    XXH_STATIC_ASSERT(sizeof(XXH32_state_t) >= sizeof(XXH_istate32_t));   // A compilation error here means XXH32_state_t is not large enough
+    return (XXH32_state_t*)XXH_malloc(sizeof(XXH32_state_t));
 }
+XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr)
+{
+    XXH_free(statePtr);
+    return XXH_OK;
+};
 
-int XXH64_sizeofState(void)
+XXH64_state_t* XXH64_createState(void)
 {
-    XXH_STATIC_ASSERT(XXH64_SIZEOFSTATE >= sizeof(struct XXH_state64_t));   // A compilation error here means XXH64_SIZEOFSTATE is not large enough
-    return sizeof(struct XXH_state64_t);
+    XXH_STATIC_ASSERT(sizeof(XXH64_state_t) >= sizeof(XXH_istate64_t));   // A compilation error here means XXH64_state_t is not large enough
+    return (XXH64_state_t*)XXH_malloc(sizeof(XXH64_state_t));
 }
+XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr)
+{
+    XXH_free(statePtr);
+    return XXH_OK;
+};
 
 
-XXH_errorcode XXH32_resetState(void* state_in, U32 seed)
+/*** Hash feed ***/
+
+XXH_errorcode XXH32_reset(XXH32_state_t* state_in, U32 seed)
 {
-    struct XXH_state32_t * state = (struct XXH_state32_t *) state_in;
+    XXH_istate32_t* state = (XXH_istate32_t*) state_in;
     state->seed = seed;
     state->v1 = seed + PRIME32_1 + PRIME32_2;
     state->v2 = seed + PRIME32_2;
@@ -473,9 +564,9 @@ XXH_errorcode XXH32_resetState(void* state_in, U32 seed)
     return XXH_OK;
 }
 
-XXH_errorcode XXH64_resetState(void* state_in, unsigned long long seed)
+XXH_errorcode XXH64_reset(XXH64_state_t* state_in, unsigned long long seed)
 {
-    struct XXH_state64_t * state = (struct XXH_state64_t *) state_in;
+    XXH_istate64_t* state = (XXH_istate64_t*) state_in;
     state->seed = seed;
     state->v1 = seed + PRIME64_1 + PRIME64_2;
     state->v2 = seed + PRIME64_2;
@@ -487,24 +578,9 @@ XXH_errorcode XXH64_resetState(void* state_in, unsigned long long seed)
 }
 
 
-void* XXH32_init (U32 seed)
-{
-    void* state = XXH_malloc (sizeof(struct XXH_state32_t));
-    if (state != NULL) XXH32_resetState(state, seed);
-    return state;
-}
-
-void* XXH64_init (unsigned long long seed)
-{
-    void* state = XXH_malloc (sizeof(struct XXH_state64_t));
-    if (state != NULL) XXH64_resetState(state, seed);
-    return state;
-}
-
-
-FORCE_INLINE XXH_errorcode XXH32_update_endian (void* state_in, const void* input, int len, XXH_endianess endian)
+FORCE_INLINE XXH_errorcode XXH32_update_endian (XXH32_state_t* state_in, const void* input, size_t len, XXH_endianess endian)
 {
-    struct XXH_state32_t * state = (struct XXH_state32_t *) state_in;
+    XXH_istate32_t* state = (XXH_istate32_t *) state_in;
     const BYTE* p = (const BYTE*)input;
     const BYTE* const bEnd = p + len;
 
@@ -517,7 +593,7 @@ FORCE_INLINE XXH_errorcode XXH32_update_endian (void* state_in, const void* inpu
     if (state->memsize + len < 16)   // fill in tmp buffer
     {
         XXH_memcpy(state->memory + state->memsize, input, len);
-        state->memsize +=  len;
+        state->memsize += (U32)len;
         return XXH_OK;
     }
 
@@ -526,10 +602,22 @@ FORCE_INLINE XXH_errorcode XXH32_update_endian (void* state_in, const void* inpu
         XXH_memcpy(state->memory + state->memsize, input, 16-state->memsize);
         {
             const U32* p32 = (const U32*)state->memory;
-            state->v1 += XXH_readLE32(p32, endian) * PRIME32_2; state->v1 = XXH_rotl32(state->v1, 13); state->v1 *= PRIME32_1; p32++;
-            state->v2 += XXH_readLE32(p32, endian) * PRIME32_2; state->v2 = XXH_rotl32(state->v2, 13); state->v2 *= PRIME32_1; p32++;
-            state->v3 += XXH_readLE32(p32, endian) * PRIME32_2; state->v3 = XXH_rotl32(state->v3, 13); state->v3 *= PRIME32_1; p32++;
-            state->v4 += XXH_readLE32(p32, endian) * PRIME32_2; state->v4 = XXH_rotl32(state->v4, 13); state->v4 *= PRIME32_1; p32++;
+            state->v1 += XXH_readLE32(p32, endian) * PRIME32_2;
+            state->v1 = XXH_rotl32(state->v1, 13);
+            state->v1 *= PRIME32_1;
+            p32++;
+            state->v2 += XXH_readLE32(p32, endian) * PRIME32_2;
+            state->v2 = XXH_rotl32(state->v2, 13);
+            state->v2 *= PRIME32_1;
+            p32++;
+            state->v3 += XXH_readLE32(p32, endian) * PRIME32_2;
+            state->v3 = XXH_rotl32(state->v3, 13);
+            state->v3 *= PRIME32_1;
+            p32++;
+            state->v4 += XXH_readLE32(p32, endian) * PRIME32_2;
+            state->v4 = XXH_rotl32(state->v4, 13);
+            state->v4 *= PRIME32_1;
+            p32++;
         }
         p += 16-state->memsize;
         state->memsize = 0;
@@ -545,11 +633,24 @@ FORCE_INLINE XXH_errorcode XXH32_update_endian (void* state_in, const void* inpu
 
         do
         {
-            v1 += XXH_readLE32((const U32*)p, endian) * PRIME32_2; v1 = XXH_rotl32(v1, 13); v1 *= PRIME32_1; p+=4;
-            v2 += XXH_readLE32((const U32*)p, endian) * PRIME32_2; v2 = XXH_rotl32(v2, 13); v2 *= PRIME32_1; p+=4;
-            v3 += XXH_readLE32((const U32*)p, endian) * PRIME32_2; v3 = XXH_rotl32(v3, 13); v3 *= PRIME32_1; p+=4;
-            v4 += XXH_readLE32((const U32*)p, endian) * PRIME32_2; v4 = XXH_rotl32(v4, 13); v4 *= PRIME32_1; p+=4;
-        } while (p<=limit);
+            v1 += XXH_readLE32((const U32*)p, endian) * PRIME32_2;
+            v1 = XXH_rotl32(v1, 13);
+            v1 *= PRIME32_1;
+            p+=4;
+            v2 += XXH_readLE32((const U32*)p, endian) * PRIME32_2;
+            v2 = XXH_rotl32(v2, 13);
+            v2 *= PRIME32_1;
+            p+=4;
+            v3 += XXH_readLE32((const U32*)p, endian) * PRIME32_2;
+            v3 = XXH_rotl32(v3, 13);
+            v3 *= PRIME32_1;
+            p+=4;
+            v4 += XXH_readLE32((const U32*)p, endian) * PRIME32_2;
+            v4 = XXH_rotl32(v4, 13);
+            v4 *= PRIME32_1;
+            p+=4;
+        }
+        while (p<=limit);
 
         state->v1 = v1;
         state->v2 = v2;
@@ -566,7 +667,7 @@ FORCE_INLINE XXH_errorcode XXH32_update_endian (void* state_in, const void* inpu
     return XXH_OK;
 }
 
-XXH_errorcode XXH32_update (void* state_in, const void* input, unsigned int len)
+XXH_errorcode XXH32_update (XXH32_state_t* state_in, const void* input, size_t len)
 {
     XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
 
@@ -578,9 +679,9 @@ XXH_errorcode XXH32_update (void* state_in, const void* input, unsigned int len)
 
 
 
-FORCE_INLINE U32 XXH32_intermediateDigest_endian (void* state_in, XXH_endianess endian)
+FORCE_INLINE U32 XXH32_digest_endian (const XXH32_state_t* state_in, XXH_endianess endian)
 {
-    struct XXH_state32_t * state = (struct XXH_state32_t *) state_in;
+    XXH_istate32_t* state = (XXH_istate32_t*) state_in;
     const BYTE * p = (const BYTE*)state->memory;
     BYTE* bEnd = (BYTE*)state->memory + state->memsize;
     U32 h32;
@@ -620,30 +721,20 @@ FORCE_INLINE U32 XXH32_intermediateDigest_endian (void* state_in, XXH_endianess
 }
 
 
-U32 XXH32_intermediateDigest (void* state_in)
+U32 XXH32_digest (const XXH32_state_t* state_in)
 {
     XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
 
     if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
-        return XXH32_intermediateDigest_endian(state_in, XXH_littleEndian);
+        return XXH32_digest_endian(state_in, XXH_littleEndian);
     else
-        return XXH32_intermediateDigest_endian(state_in, XXH_bigEndian);
-}
-
-
-U32 XXH32_digest (void* state_in)
-{
-    U32 h32 = XXH32_intermediateDigest(state_in);
-
-    XXH_free(state_in);
-
-    return h32;
+        return XXH32_digest_endian(state_in, XXH_bigEndian);
 }
 
 
-FORCE_INLINE XXH_errorcode XXH64_update_endian (void* state_in, const void* input, int len, XXH_endianess endian)
+FORCE_INLINE XXH_errorcode XXH64_update_endian (XXH64_state_t* state_in, const void* input, size_t len, XXH_endianess endian)
 {
-    struct XXH_state64_t * state = (struct XXH_state64_t *) state_in;
+    XXH_istate64_t * state = (XXH_istate64_t *) state_in;
     const BYTE* p = (const BYTE*)input;
     const BYTE* const bEnd = p + len;
 
@@ -656,7 +747,7 @@ FORCE_INLINE XXH_errorcode XXH64_update_endian (void* state_in, const void* inpu
     if (state->memsize + len < 32)   // fill in tmp buffer
     {
         XXH_memcpy(state->memory + state->memsize, input, len);
-        state->memsize +=  len;
+        state->memsize += (U32)len;
         return XXH_OK;
     }
 
@@ -665,10 +756,22 @@ FORCE_INLINE XXH_errorcode XXH64_update_endian (void* state_in, const void* inpu
         XXH_memcpy(state->memory + state->memsize, input, 32-state->memsize);
         {
             const U64* p64 = (const U64*)state->memory;
-            state->v1 += XXH_readLE64(p64, endian) * PRIME64_2; state->v1 = XXH_rotl64(state->v1, 31); state->v1 *= PRIME64_1; p64++;
-            state->v2 += XXH_readLE64(p64, endian) * PRIME64_2; state->v2 = XXH_rotl64(state->v2, 31); state->v2 *= PRIME64_1; p64++;
-            state->v3 += XXH_readLE64(p64, endian) * PRIME64_2; state->v3 = XXH_rotl64(state->v3, 31); state->v3 *= PRIME64_1; p64++;
-            state->v4 += XXH_readLE64(p64, endian) * PRIME64_2; state->v4 = XXH_rotl64(state->v4, 31); state->v4 *= PRIME64_1; p64++;
+            state->v1 += XXH_readLE64(p64, endian) * PRIME64_2;
+            state->v1 = XXH_rotl64(state->v1, 31);
+            state->v1 *= PRIME64_1;
+            p64++;
+            state->v2 += XXH_readLE64(p64, endian) * PRIME64_2;
+            state->v2 = XXH_rotl64(state->v2, 31);
+            state->v2 *= PRIME64_1;
+            p64++;
+            state->v3 += XXH_readLE64(p64, endian) * PRIME64_2;
+            state->v3 = XXH_rotl64(state->v3, 31);
+            state->v3 *= PRIME64_1;
+            p64++;
+            state->v4 += XXH_readLE64(p64, endian) * PRIME64_2;
+            state->v4 = XXH_rotl64(state->v4, 31);
+            state->v4 *= PRIME64_1;
+            p64++;
         }
         p += 32-state->memsize;
         state->memsize = 0;
@@ -684,11 +787,24 @@ FORCE_INLINE XXH_errorcode XXH64_update_endian (void* state_in, const void* inpu
 
         do
         {
-            v1 += XXH_readLE64((const U64*)p, endian) * PRIME64_2; v1 = XXH_rotl64(v1, 31); v1 *= PRIME64_1; p+=8;
-            v2 += XXH_readLE64((const U64*)p, endian) * PRIME64_2; v2 = XXH_rotl64(v2, 31); v2 *= PRIME64_1; p+=8;
-            v3 += XXH_readLE64((const U64*)p, endian) * PRIME64_2; v3 = XXH_rotl64(v3, 31); v3 *= PRIME64_1; p+=8;
-            v4 += XXH_readLE64((const U64*)p, endian) * PRIME64_2; v4 = XXH_rotl64(v4, 31); v4 *= PRIME64_1; p+=8;
-        } while (p<=limit);
+            v1 += XXH_readLE64((const U64*)p, endian) * PRIME64_2;
+            v1 = XXH_rotl64(v1, 31);
+            v1 *= PRIME64_1;
+            p+=8;
+            v2 += XXH_readLE64((const U64*)p, endian) * PRIME64_2;
+            v2 = XXH_rotl64(v2, 31);
+            v2 *= PRIME64_1;
+            p+=8;
+            v3 += XXH_readLE64((const U64*)p, endian) * PRIME64_2;
+            v3 = XXH_rotl64(v3, 31);
+            v3 *= PRIME64_1;
+            p+=8;
+            v4 += XXH_readLE64((const U64*)p, endian) * PRIME64_2;
+            v4 = XXH_rotl64(v4, 31);
+            v4 *= PRIME64_1;
+            p+=8;
+        }
+        while (p<=limit);
 
         state->v1 = v1;
         state->v2 = v2;
@@ -705,7 +821,7 @@ FORCE_INLINE XXH_errorcode XXH64_update_endian (void* state_in, const void* inpu
     return XXH_OK;
 }
 
-XXH_errorcode XXH64_update (void* state_in, const void* input, unsigned int len)
+XXH_errorcode XXH64_update (XXH64_state_t* state_in, const void* input, size_t len)
 {
     XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
 
@@ -717,33 +833,45 @@ XXH_errorcode XXH64_update (void* state_in, const void* input, unsigned int len)
 
 
 
-FORCE_INLINE U64 XXH64_intermediateDigest_endian (void* state_in, XXH_endianess endian)
+FORCE_INLINE U64 XXH64_digest_endian (const XXH64_state_t* state_in, XXH_endianess endian)
 {
-    struct XXH_state64_t * state = (struct XXH_state64_t *) state_in;
+    XXH_istate64_t * state = (XXH_istate64_t *) state_in;
     const BYTE * p = (const BYTE*)state->memory;
     BYTE* bEnd = (BYTE*)state->memory + state->memsize;
     U64 h64;
 
     if (state->total_len >= 32)
     {
-    	U64 v1 = state->v1;
-    	U64 v2 = state->v2;
-    	U64 v3 = state->v3;
-    	U64 v4 = state->v4;
+        U64 v1 = state->v1;
+        U64 v2 = state->v2;
+        U64 v3 = state->v3;
+        U64 v4 = state->v4;
 
         h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18);
 
-        v1 *= PRIME64_2; v1 = XXH_rotl64(v1, 31); v1 *= PRIME64_1; h64 ^= v1;
-    	h64 = h64*PRIME64_1 + PRIME64_4;
-
-        v2 *= PRIME64_2; v2 = XXH_rotl64(v2, 31); v2 *= PRIME64_1; h64 ^= v2;
-    	h64 = h64*PRIME64_1 + PRIME64_4;
-
-        v3 *= PRIME64_2; v3 = XXH_rotl64(v3, 31); v3 *= PRIME64_1; h64 ^= v3;
-    	h64 = h64*PRIME64_1 + PRIME64_4;
-
-        v4 *= PRIME64_2; v4 = XXH_rotl64(v4, 31); v4 *= PRIME64_1; h64 ^= v4;
-    	h64 = h64*PRIME64_1 + PRIME64_4;
+        v1 *= PRIME64_2;
+        v1 = XXH_rotl64(v1, 31);
+        v1 *= PRIME64_1;
+        h64 ^= v1;
+        h64 = h64*PRIME64_1 + PRIME64_4;
+
+        v2 *= PRIME64_2;
+        v2 = XXH_rotl64(v2, 31);
+        v2 *= PRIME64_1;
+        h64 ^= v2;
+        h64 = h64*PRIME64_1 + PRIME64_4;
+
+        v3 *= PRIME64_2;
+        v3 = XXH_rotl64(v3, 31);
+        v3 *= PRIME64_1;
+        h64 ^= v3;
+        h64 = h64*PRIME64_1 + PRIME64_4;
+
+        v4 *= PRIME64_2;
+        v4 = XXH_rotl64(v4, 31);
+        v4 *= PRIME64_1;
+        h64 ^= v4;
+        h64 = h64*PRIME64_1 + PRIME64_4;
     }
     else
     {
@@ -754,22 +882,25 @@ FORCE_INLINE U64 XXH64_intermediateDigest_endian (void* state_in, XXH_endianess
 
     while (p+8<=bEnd)
     {
-    	U64 k1 = XXH_readLE64((const U64*)p, endian);
-    	k1 *= PRIME64_2; k1 = XXH_rotl64(k1,31); k1 *= PRIME64_1; h64 ^= k1;
-    	h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4;
-    	p+=8;
+        U64 k1 = XXH_readLE64((const U64*)p, endian);
+        k1 *= PRIME64_2;
+        k1 = XXH_rotl64(k1,31);
+        k1 *= PRIME64_1;
+        h64 ^= k1;
+        h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4;
+        p+=8;
     }
 
     if (p+4<=bEnd)
     {
-    	h64 ^= (U64)(XXH_readLE32((const U32*)p, endian)) * PRIME64_1;
+        h64 ^= (U64)(XXH_readLE32((const U32*)p, endian)) * PRIME64_1;
         h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3;
         p+=4;
     }
 
     while (p<bEnd)
     {
-    	h64 ^= (*p) * PRIME64_5;
+        h64 ^= (*p) * PRIME64_5;
         h64 = XXH_rotl64(h64, 11) * PRIME64_1;
         p++;
     }
@@ -784,23 +915,14 @@ FORCE_INLINE U64 XXH64_intermediateDigest_endian (void* state_in, XXH_endianess
 }
 
 
-unsigned long long XXH64_intermediateDigest (void* state_in)
+unsigned long long XXH64_digest (const XXH64_state_t* state_in)
 {
     XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;
 
     if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT)
-        return XXH64_intermediateDigest_endian(state_in, XXH_littleEndian);
+        return XXH64_digest_endian(state_in, XXH_littleEndian);
     else
-        return XXH64_intermediateDigest_endian(state_in, XXH_bigEndian);
+        return XXH64_digest_endian(state_in, XXH_bigEndian);
 }
 
 
-unsigned long long XXH64_digest (void* state_in)
-{
-    U64 h64 = XXH64_intermediateDigest(state_in);
-
-    XXH_free(state_in);
-
-    return h64;
-}
-