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Users wishing to vary color and precision within a single calculation must use specific type names and function names whenever these types and names differ from the prevailing precision and color. If using different colors that the specified value then one must also include the necessary headers. For example, if a single precision SU(3) calculation also uses some SU(2) datatypes or operations, the following preamble is appropriate:
#define QDP_Precision 'F'
#define QDP_Nc 3
#include <qdp.h>
#include <qdp_f2.h>
and the following linkage to get the corresponding libraries:
-lqdp_f2 -lqdp_f3 -lqdp_f -lqdp_int -lqdp_common
Note that the single, double and conversion headers for the prevailing color are automatically included through qdp.h. Only when mixing colors does one need to specify individual headers.
The following table lists all the QDP headers.
| Name | Purpose
|
| qdp.h | Master header and QDP utilities
|
| qdp_int.h | integers, boolean
|
| qdp_f.h | real, complex, single precision
|
| qdp_d.h | real, complex, double precision
|
| qdp_df.h | real, complex, precision conversion
|
| qdp_f2.h | SU(2), single precision
|
| qdp_d2.h | SU(2), double precision
|
| qdp_df2.h | SU(2), precision conversion
|
| qdp_f3.h | SU(3), single precision
|
| qdp_d3.h | SU(3), double precision
|
| qdp_df3.h | SU(3), precision conversion
|
| qdp_fn.h | SU(N), single precision
|
| qdp_dn.h | SU(N), double precision
|
| qdp_dfn.h | SU(N), precision conversion
|