inside localtime() - wondering how to easily extract timezone difference

[wysota]

Well ya I forgot to mention that I have read through tzset - but it appears to be a UNIX-specific thing. How would then the localtime() function compile/work on DOS/Windows?

Does it matter? The most important part is that it works (if it works, because localtime() is not an ANSI C function, so I guess non-posix Windows may not have it), right? Let's leave libc programming to libc programmers.

[yop]

http://cygwin.com/cygwin-api/cygwin-api.html (but be warned the water is getting deeper )

[jamadagni]

localtime() is not an ANSI C function

Of course it's an ANSI C function - it is listed and described by K&R in their ANSI C book.

[wysota]

"man localtime" gives this as compliance standards:

SVID 3, POSIX, BSD 4.3, ISO 9899