Here are the data structures with brief descriptions:

accum_double_lazy_t
accum_double_t
accum_float_lazy_t
accum_float_t
accum_impl_t
accum_int_lazy_t
accum_int_t
accum_long_lazy_t
accum_long_t
accum_short_lazy_t
accum_short_t
accum_t	Opaque type for accumulators
accumed_t	Accumed clause. User-level data-structure to represent an accumulator clause
async_t	An async definition
async_task_t	The HCLIB view of an async task
ddf_t
ddt_t
finish_t
forasync1D_t
forasync1D_task_t
forasync2D_t
forasync2D_task_t
forasync3D_t
forasync3D_task_t
forasync_t
forasync_task_t
loop_domain_t	Describe loop domain when spawning a forasync
ocr_ddt_t
ocr_finish_t
phased_t	Phased clause. User-level data-structure to represent a phased clause