glibc/sysdeps/ieee754
Adhemerval Zanella 76da726532 Fix ilogb exception and errno (bug 6794)
[BZ #6794]
Following Joseph comments about bug 6794, here is a proposed fix. It turned out
to be a large fix mainly because I had to move some file along to follow libm
files/names conventions.

Basically I have added wrappers (w_ilogb.c, w_ilogbf.c, w_ilogbl.c) that now calls
the symbol '__ieee754_ilogb'. The wrappers checks for '__ieee754_ilogb' output and
set the errno and raise exceptions as expected.

The '__ieee754_ilogb' is implemented in sysdeps. I have moved the 's_ilogb[f|l]' files
to e_ilogb[f|l] and renamed the '__ilogb[f|l]' to '__ieee754_ilogb[f|l]'.

I also found out a bug in i386 and x86-64 assembly coded ilogb implementation where
it raises a FE_DIVBYZERO when argument is '0.0'. I corrected this issue as well.

Finally I added the errno and FE_INVALID tests for 0.0, NaN and +-InF argument. Tested
on i386, x86-64, ppc32 and ppc64.
2012-04-17 22:12:53 +02:00
..
bits
dbl-64 Fix ilogb exception and errno (bug 6794) 2012-04-17 22:12:53 +02:00
flt-32 Fix ilogb exception and errno (bug 6794) 2012-04-17 22:12:53 +02:00
ldbl-64-128
ldbl-96 Avoid overflows from long double functions using __kernel_standard. 2012-03-28 09:32:12 +00:00
ldbl-128 Avoid overflows from long double functions using __kernel_standard. 2012-03-28 09:32:12 +00:00
ldbl-128ibm Fix ilogb exception and errno (bug 6794) 2012-04-17 22:12:53 +02:00
ldbl-opt Fix ilogb exception and errno (bug 6794) 2012-04-17 22:12:53 +02:00
ieee754.h
k_standard.c Fix pow of negative numbers to integer exponents (bugs 369, 2678, 3866). 2012-03-28 14:57:58 +00:00
Makefile
s_lib_version.c
s_matherr.c
s_signgam.c
support.c