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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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