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| author | Joseph Myers <joseph@codesourcery.com> | 2016-11-01 18:38:52 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-11-01 18:38:52 +0000 |
| commit | 6adaeadf95fa5cc68e92b07456bb82dbd85afd06 (patch) | |
| tree | cd69b3044ceaada29fa5c197bb8a8433430af980 | |
| parent | bb5badf17087099dd9140f812778f7a8615b2111 (diff) | |
| download | glibc-6adaeadf95fa5cc68e92b07456bb82dbd85afd06.tar.gz glibc-6adaeadf95fa5cc68e92b07456bb82dbd85afd06.tar.xz glibc-6adaeadf95fa5cc68e92b07456bb82dbd85afd06.zip | |
Correct clog10 documentation (bug 19673).
Bug 19673 reports that the documentation of clog10 is incorrect, both failing to include the division by log (10) in the imaginary part and, in the non-TeX version of the equation only, describing the LHS as log rather than log10. This patch fixes both issues. Note: I think it's appropriate that the LHS says log10 not clog10, and that the cexp and clog descriptions referred to in a comment in that bug report similarly say exp and log; this is a mathematical description not a literal C one. Tested for x86_64. [BZ #19673] * manual/math.texi (Exponents and Logarithms): Correct description of clog10.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | manual/math.texi | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog index 831c876b6e..6be5c5d67b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2016-11-01 Joseph Myers <joseph@codesourcery.com> + + [BZ #19673] + * manual/math.texi (Exponents and Logarithms): Correct description + of clog10. + 2016-10-31 Carlos O'Donell <carlos@redhat.com> [Bz #20729] diff --git a/manual/math.texi b/manual/math.texi index ccafb949fe..b4bb32345e 100644 --- a/manual/math.texi +++ b/manual/math.texi @@ -804,10 +804,10 @@ These functions return the base 10 logarithm of the complex value @var{z}. Mathematically, this corresponds to the value @ifnottex -@math{log (z) = log10 (cabs (z)) + I * carg (z)} +@math{log10 (z) = log10 (cabs (z)) + I * carg (z) / log (10)} @end ifnottex @tex -$$\log_{10}(z) = \log_{10}|z| + i \arg z$$ +$$\log_{10}(z) = \log_{10}|z| + i \arg z / \log (10)$$ @end tex These functions are GNU extensions. |