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| author | Bruce Momjian <bruce@momjian.us> | 2007-01-05 03:19:26 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2007-01-05 03:19:26 +0000 |
| commit | 138668ca37d3f38652fd4b31a9b8091293b03a16 (patch) | |
| tree | d1b2b0e986a7b05e299fd438c0f6507ff0e750cd /src/backend/utils/adt/float.c | |
| parent | 53c26d6f8fa4981ba2bb70f7dcb4ed5438a48cd6 (diff) | |
| download | postgresql-138668ca37d3f38652fd4b31a9b8091293b03a16.tar.gz postgresql-138668ca37d3f38652fd4b31a9b8091293b03a16.zip | |
Update float dpow() comment about whick platforms had issues with Nan.
Stefan Kaltenbrunner
Diffstat (limited to 'src/backend/utils/adt/float.c')
| -rw-r--r-- | src/backend/utils/adt/float.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/backend/utils/adt/float.c b/src/backend/utils/adt/float.c index 7651da166ed..259fd2bfad8 100644 --- a/src/backend/utils/adt/float.c +++ b/src/backend/utils/adt/float.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.140 2007/01/04 05:18:39 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.141 2007/01/05 03:19:26 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -1443,8 +1443,8 @@ dpow(PG_FUNCTION_ARGS) * follows _IEEE_, _POSIX_, _XOPEN_, or _SVID_, so we try to avoid * using errno. However, some platform/CPU combinations return * errno == EDOM and result == Nan, so we have to check for that and - * set result properly. For example, Linux on Pentium, pre-Xeon - * hardware returns EDOM/Nan for (-1) ^ 1e19, but (-1) ^ 1e18 retuns + * set result properly. For example, Linux on 32-bit x86 hardware + * returns EDOM/Nan for (-1) ^ 1e19, but (-1) ^ 1e18 returns * 1 -- basically a negative base raised to a very high power causes * it on some CPUs. */ |