Apply fix so pow() and exp() ERANGE is used only if result is not 0.
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.145 2007/01/06 15:18:02 momjian Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.146 2007/01/06 20:21:29 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -1459,7 +1459,7 @@ dpow(PG_FUNCTION_ARGS)
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else
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result = 1;
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}
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else if (errno == ERANGE && !isinf(result))
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else if (errno == ERANGE && result != 0 && !isinf(result))
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result = get_float8_infinity();
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CHECKFLOATVAL(result, isinf(arg1) || isinf(arg2), arg1 == 0);
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@ -1478,7 +1478,7 @@ dexp(PG_FUNCTION_ARGS)
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errno = 0;
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result = exp(arg1);
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if (errno == ERANGE && !isinf(result))
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if (errno == ERANGE && result != 0 && !isinf(result))
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result = get_float8_infinity();
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CHECKFLOATVAL(result, isinf(arg1), false);
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