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Centralize definition of integer limits.

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Several submitted and even committed patches have run into the problem
that C89, our baseline, does not provide minimum/maximum values for
various integer datatypes. C99's stdint.h does, but we can't rely on
it.

Several parts of the code defined limits locally, so instead centralize
the definitions to c.h.

This patch also changes the more obvious usages of literal limit values;
there's more places that could be changed, but it's less clear whether
it's beneficial to change those.

Author: Andrew Gierth
Discussion: 87619tc5wc.fsf@news-spur.riddles.org.uk
This commit is contained in:
Andres Freund
2015-03-25 22:39:42 +01:00
parent bdc3d7fa23
commit 83ff1618bc
18 changed files with 68 additions and 36 deletions
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4
contrib/btree_gist/btree_ts.c
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@ -153,7 +153,7 @@ ts_dist(PG_FUNCTION_ARGS)
p->day = INT_MAX;
p->month = INT_MAX;
#ifdef HAVE_INT64_TIMESTAMP
p->time = INT64CONST(0x7FFFFFFFFFFFFFFF);
p->time = INT64_MAX;
#else
p->time = DBL_MAX;
#endif
@ -181,7 +181,7 @@ tstz_dist(PG_FUNCTION_ARGS)
p->day = INT_MAX;
p->month = INT_MAX;
#ifdef HAVE_INT64_TIMESTAMP
p->time = INT64CONST(0x7FFFFFFFFFFFFFFF);
p->time = INT64_MAX;
#else
p->time = DBL_MAX;
#endif