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| author | fxcoudert <fxcoudert@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-03-12 10:33:54 +0000 |
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| committer | fxcoudert <fxcoudert@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-03-12 10:33:54 +0000 |
| commit | e7f272a26094943183b935803b4adcd5eb19c96a (patch) | |
| tree | 4388651638997ec7616671bf5a60266d2a250528 /gcc/fortran/intrinsic.texi | |
| parent | 4f16309a628f0de5a24f251244c4e4cf1b36acde (diff) | |
| download | gcc-e7f272a26094943183b935803b4adcd5eb19c96a.tar.gz | |
PR fortran/48054
* intrinsic.texi: Clarify doc of logarithm functions.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@170899 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/fortran/intrinsic.texi')
| -rw-r--r-- | gcc/fortran/intrinsic.texi | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/gcc/fortran/intrinsic.texi b/gcc/fortran/intrinsic.texi index 28b5fe8ade8..a13c83350e4 100644 --- a/gcc/fortran/intrinsic.texi +++ b/gcc/fortran/intrinsic.texi @@ -4285,7 +4285,7 @@ end program test_exit @fnindex ZEXP @fnindex CDEXP @cindex exponential function -@cindex logarithmic function, inverse +@cindex logarithm function, inverse @table @asis @item @emph{Description}: @@ -7766,7 +7766,7 @@ end program test_loc @node LOG -@section @code{LOG} --- Logarithm function +@section @code{LOG} --- Natural logarithm function @fnindex LOG @fnindex ALOG @fnindex DLOG @@ -7774,11 +7774,13 @@ end program test_loc @fnindex ZLOG @fnindex CDLOG @cindex exponential function, inverse -@cindex logarithmic function +@cindex logarithm function +@cindex natural logarithm function @table @asis @item @emph{Description}: -@code{LOG(X)} computes the logarithm of @var{X}. +@code{LOG(X)} computes the natural logarithm of @var{X}, i.e. the +logarithm to the base @math{e}. @item @emph{Standard}: Fortran 77 and later @@ -7804,9 +7806,9 @@ If @var{X} is @code{COMPLEX}, the imaginary part @math{\omega} is in the range @item @emph{Example}: @smallexample program test_log - real(8) :: x = 1.0_8 + real(8) :: x = 2.7182818284590451_8 complex :: z = (1.0, 2.0) - x = log(x) + x = log(x) ! will yield (approximately) 1 z = log(z) end program test_log @end smallexample @@ -7830,7 +7832,8 @@ end program test_log @fnindex ALOG10 @fnindex DLOG10 @cindex exponential function, inverse -@cindex logarithmic function +@cindex logarithm function with base 10 +@cindex base 10 logarithm function @table @asis @item @emph{Description}: |