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Re: Unix time on a DOS or OS/2 computer

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  • Subject: Re: Unix time on a DOS or OS/2 computer
  • Date: Sat, 03 Sep 1994 15:32:43 -0600
>From: address@hidden (JC Liljegren)
>Organization: PNL
>Keywords: 199409022152.AA11477 netCDF OS/2 MicroSoft

Jim,

>I have been working with netCDF files wherein time is recorded using
>the Unix standard (i.e. seconds since 1-Jan-1970).  Converting this to
>more familiar representations (e.g. year, month, day, etc.) is no
>problem on Unix systems using the built-in routine GMTIME.
>
>However, I would now like to read and write netCDF files on a DOS or
>OS/2 computer.  These systems do not have built-ins for Unix time.

Microsoft C compilers going back to at least version 5 have supported
the gmtime call.  We use Microsoft C Version 6.0 on OS/2 systems here
at Unidata to produce 16-bit executables linked against the netCDF library.
We will soon be using the GNU C compiler, gcc, coupled with an emulation
environment for OS/2 2.x to build 32-bit versions of netCDF routines.

>Does anyone have an algorithm (preferrably coded in FORTRAN) that will
>convert between Unix time and more familiar representations?
>
>Jim Liljegren

Tom Yoksas