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Paranoia about unordered comparisons in IEEE float math. If we are

given values that compare as unordered, make sure we reply that they
are equal, which is better than giving an arbitrary answer --- at least
it doesn't depend on which one is passed as which arg.
This commit is contained in:
Tom Lane
2001-06-02 17:12:12 +00:00
parent fc7c16fd16
commit 58193c5f37

View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.71 2001/05/03 19:00:36 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/float.c,v 1.72 2001/06/02 17:12:12 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -566,10 +566,10 @@ float4_cmp_internal(float4 a, float4 b)
{
if (a > b)
return 1;
else if (a == b)
return 0;
else
else if (a < b)
return -1;
else
return 0;
}
}
@ -662,10 +662,10 @@ float8_cmp_internal(float8 a, float8 b)
{
if (a > b)
return 1;
else if (a == b)
return 0;
else
else if (a < b)
return -1;
else
return 0;
}
}