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-rw-r--r--ChangeLog6
-rw-r--r--manual/math.texi4
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.