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author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2012-04-11 16:30:13 -0300 |
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committer | Andreas Jaeger <aj@suse.de> | 2012-04-17 22:12:53 +0200 |
commit | 76da7265320010c7a273ed99f53938c0f32d5fad (patch) | |
tree | f094871a5f38652d2d320a11423fee602a8746e6 /math/s_ccosf.c | |
parent | 0396e69dbefb3630651d93e0a7526c4326a071bb (diff) | |
download | glibc-76da7265320010c7a273ed99f53938c0f32d5fad.tar.gz glibc-76da7265320010c7a273ed99f53938c0f32d5fad.tar.xz glibc-76da7265320010c7a273ed99f53938c0f32d5fad.zip |
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.
Diffstat (limited to 'math/s_ccosf.c')
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