change return type to ULL

lib/decompress/zstd_decompress.c

@@ -503,9 +503,9 @@ size_t ZSTD_findFrameCompressedSize(const void *src, size_t srcSize)
  *  `srcSize` must be at least as large as the frame contained
  *  @return : maximum decompressed size of the compressed source
  */
-size_t ZSTD_decompressBound(const void* src, size_t srcSize)
+unsigned long long ZSTD_decompressBound(const void* src, size_t srcSize)
 {
-    size_t totalDstSize = 0;
+    unsigned long long totalDstSize = 0;
 #if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT >= 1)
     if (ZSTD_isLegacy(src, srcSize))
         return ERROR(version_unsupported);

lib/zstd.h

@@ -148,11 +148,11 @@ ZSTDLIB_API unsigned long long ZSTD_getDecompressedSize(const void* src, size_t
 
 /*======  Helper functions  ======*/
 #define ZSTD_COMPRESSBOUND(srcSize)   ((srcSize) + ((srcSize)>>8) + (((srcSize) < (128<<10)) ? (((128<<10) - (srcSize)) >> 11) /* margin, from 64 to 0 */ : 0))  /* this formula ensures that bound(A) + bound(B) <= bound(A+B) as long as A and B >= 128 KB */
-ZSTDLIB_API size_t      ZSTD_compressBound(size_t srcSize);                    /*!< maximum compressed size in worst case single-pass scenario */
-ZSTDLIB_API size_t      ZSTD_decompressBound(const void* src, size_t srcSice); /*!< maximum decompressed size of the compressed source */
-ZSTDLIB_API unsigned    ZSTD_isError(size_t code);                             /*!< tells if a `size_t` function result is an error code */
-ZSTDLIB_API const char* ZSTD_getErrorName(size_t code);                        /*!< provides readable string from an error code */
-ZSTDLIB_API int         ZSTD_maxCLevel(void);                                  /*!< maximum compression level available */
+ZSTDLIB_API size_t             ZSTD_compressBound(size_t srcSize);                    /*!< maximum compressed size in worst case single-pass scenario */
+ZSTDLIB_API unsigned long long ZSTD_decompressBound(const void* src, size_t srcSice); /*!< maximum decompressed size of the compressed source */
+ZSTDLIB_API unsigned           ZSTD_isError(size_t code);                             /*!< tells if a `size_t` function result is an error code */
+ZSTDLIB_API const char*        ZSTD_getErrorName(size_t code);                        /*!< provides readable string from an error code */
+ZSTDLIB_API int                ZSTD_maxCLevel(void);                                  /*!< maximum compression level available */
 
 
 /***************************************