Update New API and Other Miscellaneous

[cindytsai]

Update New API and Other Miscellaneous

Change Derived Function and Get Attribute Function Prototype

Originally, derived function and get attribute function prepare one grid data at a time, which is not that efficient. So we make them prepare multiple grids data in one function call. We have a restriction of supporting double data type in derived function only. But now, we have support int, long, float, double data type.

Now, user should get gid from list_gid, and then fill in required data in yt_array array according to gid.

• Comparing old and new prototype.
  • Derived function for derived field:
  • Old: derived_func(long gid, double *data)
  • New: derived_func(int list_len, long *list_gid, yt_array *data_array
  • Get attribute function for particle data:
  • Old: get_attr(long gid, char *attr_name, void *data)
  • New: get_attr(int list_len, long *list_gid, char *attr_name, yt_array *data_array)

    Abort If Check Not Pass in libyt

• When you pass in yt_param_libyt to libyt, if check_data is set to true, libyt will do a series of check so that you are using it correctly.
• Abort if check doesn't pass.

Update Documentation and Example

• Update to doc to newest.
• Update example also.