MCHUNK_SIZE      1948 oshmem/mca/memheap/ptmalloc/malloc.c   ((MCHUNK_SIZE + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK)
MCHUNK_SIZE      2858 oshmem/mca/memheap/ptmalloc/malloc.c         ((MCHUNK_SIZE         & (MCHUNK_SIZE-SIZE_T_ONE))         != 0) ||