http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48054
Summary: Documentation for LOG intrinsic function is ambiguous
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libfortran
AssignedTo: [email protected]
ReportedBy: [email protected]
The documentation for the LOG (Logarithm) function does not mention that this
function calculates the natural logarithm, the logarithm to the base e.
Also the example:
real(8) :: x = 1.0_8
x = log(x)
is not very meaningful, since the result is 0.0 for all logarithm bases.
Suggested fix:
Change the headline and description to
LOG — Natural logarithm function
LOG(X) computes the logarithm of X to base e.
or to (a modified version of the LOG10 doc):
LOG — Base e logarithm function
LOG(X) computes the base e logarithm of X.
and change the example to
real(8) :: x = 2.718281828_8
which yields (approximately) 1
