[PATCH] Fix for logb/logbf/logbl (bz 13954/13955/13956)

[David Miller]

From: Adhemerval Zanella <azanella@linux.vnet.ibm.com>
Date: Thu, 03 May 2012 11:24:05 -0300

> On 05/02/2012 09:36 PM, David Miller wrote:
>> Well, first it didn't even build, here's a fix for that:
>>
>> --- a/sysdeps/ieee754/ldbl-128/s_logbl.c~	2012-05-02 16:55:43.650725269 -0700
>> +++ b/sysdeps/ieee754/ldbl-128/s_logbl.c	2012-05-02 17:04:49.200630094 -0700
>> @@ -42,7 +42,7 @@ __logbl (long double x)
>>        /* POSIX specifies that denormal number is treated as
>>           though it were normalized.  */
>>        int m1 = (hx == 0) ? 0 : __builtin_clzl (hx);
>> -      int m2 = (lx == 0) ? 0 : __builtin_clz; (lx);
>> +      int m2 = (lx == 0) ? 0 : __builtin_clzl (lx);
>>        int ma = (m1 == 0) ? m2 + 64 : m1;
>>        return -16382.0 + (long double)(15 - ma);
>>      }
>>
>> Next, all the logb tests fail for long double on sparc, see
>> the attached math/test-ldouble.out:
> Thank you very much for testing it and sorry for the gross mistake. The main issue (besides 
> the misplaced ';') is I was using 'hx' instead of 'ex' in final calculations. I have corrected
> it and tested on simulated long double with two int64_t. I believe the implementation is now 
> correct to test.

I'll try out your new patch on sparc later today.