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Running the math tests I noticed that ilogbl (+-Inf) had the wrong
return value on x86-64.
The following patch fixes the bug.
Ok to commit?
Andreas
2001-08-08 Andreas Jaeger <aj@suse.de>
* sysdeps/ieee754/ldbl-96/s_ilogbl.c (__ilogbl): Fix test for
infinity.
============================================================
Index: sysdeps/ieee754/ldbl-96/s_ilogbl.c
--- sysdeps/ieee754/ldbl-96/s_ilogbl.c 2001/06/06 12:49:39 1.2
+++ sysdeps/ieee754/ldbl-96/s_ilogbl.c 2001/08/08 13:54:00
@@ -53,9 +53,13 @@ static char rcsid[] = "$NetBSD: $";
return ix;
}
else if (es<0x7fff) return es-0x3fff;
- else if (FP_ILOGBNAN != INT_MAX && (hx|lx) == 0)
- /* ISO C99 requires ilogbl(+-Inf) == INT_MAX. */
- return INT_MAX;
+ else if (FP_ILOGBNAN != INT_MAX)
+ {
+ GET_LDOUBLE_WORDS(es,hx,lx,x);
+ if ((hx & 0x7fffffff|lx) == 0)
+ /* ISO C99 requires ilogbl(+-Inf) == INT_MAX. */
+ return INT_MAX;
+ }
return FP_ILOGBNAN;
}
weak_alias (__ilogbl, ilogbl)
--
Andreas Jaeger
SuSE Labs aj@suse.de
private aj@arthur.inka.de
http://www.suse.de/~aj
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