Internal types used in particular for computing the average and centroid temporal aggregates. More...
Include dependency graph for doublen.c:
Functions | |
| PGDLLEXPORT Datum | double2_in (PG_FUNCTION_ARGS) |
| Input function for double2 values (stub only) More... | |
| PGDLLEXPORT Datum | double2_out (PG_FUNCTION_ARGS) |
| Output function for double2 values (stub only) More... | |
| PGDLLEXPORT Datum | double2_recv (PG_FUNCTION_ARGS) |
| Receive function for double2 values. More... | |
| PGDLLEXPORT Datum | double2_send (PG_FUNCTION_ARGS) |
| Send function for double2 values. More... | |
| void | double2_set (double2 *result, double a, double b) |
| Set a double2 value from the double values. More... | |
| double2 * | double2_add (double2 *d1, double2 *d2) |
| Returns the addition of the double2 values. More... | |
| bool | double2_eq (double2 *d1, double2 *d2) |
| Returns true if the double2 values are equal. More... | |
| PGDLLEXPORT Datum | double3_in (PG_FUNCTION_ARGS) |
| Input function for double2 values (stub only) More... | |
| PGDLLEXPORT Datum | double3_out (PG_FUNCTION_ARGS) |
| Output function for double3 values (stub only) More... | |
| PGDLLEXPORT Datum | double3_recv (PG_FUNCTION_ARGS) |
| Receive function for double3 values. More... | |
| PGDLLEXPORT Datum | double3_send (PG_FUNCTION_ARGS) |
| Send function for double3 values. More... | |
| void | double3_set (double3 *result, double a, double b, double c) |
| Set a double3 value from the double values. More... | |
| double3 * | double3_add (double3 *d1, double3 *d2) |
| Returns the addition of the double3 values. More... | |
| bool | double3_eq (double3 *d1, double3 *d2) |
| Returns true if the double3 values are equal. More... | |
| PGDLLEXPORT Datum | double4_in (PG_FUNCTION_ARGS) |
| Input function for double4 values (stub only) More... | |
| PGDLLEXPORT Datum | double4_out (PG_FUNCTION_ARGS) |
| Output function for double4 values (stub only) More... | |
| PGDLLEXPORT Datum | double4_recv (PG_FUNCTION_ARGS) |
| Receive function for double4 values. More... | |
| PGDLLEXPORT Datum | double4_send (PG_FUNCTION_ARGS) |
| Send function for double3 values. More... | |
| void | double4_set (double4 *result, double a, double b, double c, double d) |
| Set a double4 value from the double values. More... | |
| double4 * | double4_add (double4 *d1, double4 *d2) |
| Returns the addition of the double4 values. More... | |
| bool | double4_eq (double4 *d1, double4 *d2) |
| Returns true if the double4 values are equal. More... | |
| PGDLLEXPORT Datum | tdouble2_in (PG_FUNCTION_ARGS) |
| Input function for the temporal double2 type (stub only) More... | |
| PGDLLEXPORT Datum | tdouble3_in (PG_FUNCTION_ARGS) |
| Input function for the temporal double3 type (stub only) More... | |
| PGDLLEXPORT Datum | tdouble4_in (PG_FUNCTION_ARGS) |
| Input function for the temporal double4 type (stub only) More... | |
Detailed Description
Internal types used in particular for computing the average and centroid temporal aggregates.
The double2, double3, and double4 types are base types composed, respectively, of two, three, and four double values. The tdouble2, tdouble3, and tdouble4 types are the corresponding temporal types. The in/out functions of all these types are stubs since all access should be internal. These types are used for the transition function of the aggregates, where the first components of the doubleN values store the sum and the last one stores the count of the values. The final function computes the average from the doubleN values.
