database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-07 00:36:50 +03:00
Code Activity

Support infinity and -infinity in the numeric data type.

Browse Source 
Add infinities that behave the same as they do in the floating-point
data types.  Aside from any intrinsic usefulness these may have,
this closes an important gap in our ability to convert floating
values to numeric and/or replace float-based APIs with numeric.

The new values are represented by bit patterns that were formerly
not used (although old code probably would take them for NaNs).
So there shouldn't be any pg_upgrade hazard.

Patch by me, reviewed by Dean Rasheed and Andrew Gierth

Discussion: https://postgr.es/m/606717.1591924582@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2020-07-22 19:19:44 -04:00
parent 9e108984fb
commit a57d312a77
12 changed files with 2252 additions and 381 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/include/utils/numeric.h
View File

@ -57,6 +57,7 @@ typedef struct NumericData *Numeric;
* Utility functions in numeric.c
*/
extern bool numeric_is_nan(Numeric num);
extern bool numeric_is_inf(Numeric num);
int32 numeric_maximum_size(int32 typmod);
extern char *numeric_out_sci(Numeric num, int scale);
extern char *numeric_normalize(Numeric num);