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-rw-r--r--src/H5HGprivate.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/H5HGprivate.h b/src/H5HGprivate.h
index 1c609e2..4841847 100644
--- a/src/H5HGprivate.h
+++ b/src/H5HGprivate.h
@@ -49,6 +49,10 @@ typedef struct H5HG_heap_t H5HG_heap_t;
#define H5HG_FREE_SIZE(H) (H5HG_get_free_size(H))
#endif /* H5HG_MODULE */
+/* Size of encoded global heap ID */
+/* (size of file address + 32-bit integer) */
+#define H5HG_HEAP_ID_SIZE(F) ((size_t)H5F_SIZEOF_ADDR(F) + H5_SIZEOF_UINT32_T)
+
/* Main global heap routines */
H5_DLL herr_t H5HG_insert(H5F_t *f, size_t size, void *obj, H5HG_t *hobj/*out*/);