*From*: Joseph Leonard <jleonard42]=[gmail.com>*Subject*: CCL:G: Scientific notation in Gaussian 16*Date*: Tue, 11 Jan 2022 14:15:54 -0500

D means double precision as I recall. I vaguely remember q
appearing somewhere when quad precision was used. E would be single
precision. They’re all scientific notation as you
surmise.

Joe

On Tue, Jan 11, 2022 at
2:13 PM Andrew DeYoung andrewdaviddeyoung###gmail.com <owner-chemistry/./ccl.net> wrote:

Hi,It appears that various quantities that are output by Gaussian 16 use notation of the form 6.626D-34. Is it correct for me to assume that this represents 6.626*10^(-34), and is equivalent to the scientific notation 6.626E-34 or 6.626e-34 used in other areas, such as in C/C++, Python, and MATLAB? Or does the "D" represent anything different from, or in addition to, "*10^"?Thank you for bearing with me with this question. (I am what we call in the US a millennial, and am not terribly well acquainted with the sometimes historical origins and meanings of notation!)Best,AndrewAndrew DeYoung, PhDDepartment of ChemistryCarnegie Mellon University

--

The London
Underground is not a political movement...