diff options
| author | Andres Freund <andres@anarazel.de> | 2017-10-29 22:13:54 -0700 |
|---|---|---|
| committer | Andres Freund <andres@anarazel.de> | 2017-12-12 16:55:37 -0800 |
| commit | 4d6ad31257adaf8a51e1c4377d96afa656d9165f (patch) | |
| tree | 71d0e8fffcaa28226dc580495273d2a428f2e94d /src/backend/utils/adt/oracle_compat.c | |
| parent | 95b52351fe966c93791462274dfa7af7e50d2da1 (diff) | |
| download | postgresql-4d6ad31257adaf8a51e1c4377d96afa656d9165f.tar.gz postgresql-4d6ad31257adaf8a51e1c4377d96afa656d9165f.zip | |
Provide overflow safe integer math inline functions.
It's not easy to get signed integer overflow checks correct and
fast. Therefore abstract the necessary infrastructure into a common
header providing addition, subtraction and multiplication for 16, 32,
64 bit signed integers.
The new macros aren't yet used, but a followup commit will convert
several open coded overflow checks.
Author: Andres Freund, with some code stolen from Greg Stark
Reviewed-By: Robert Haas
Discussion: https://postgr.es/m/20171024103954.ztmatprlglz3rwke@alap3.anarazel.de
Diffstat (limited to 'src/backend/utils/adt/oracle_compat.c')
0 files changed, 0 insertions, 0 deletions