Re: [bug-gawk] gawk with dates before 1970

[Eli Zaretskii]

> From: Aharon Robbins <address@hidden>
> Date: Tue, 14 Apr 2015 21:25:30 +0300
> Cc: address@hidden, address@hidden, address@hidden
> 
> > IOW, it's a simple generalization of the current test: instead of
> > looking only at the sign, make sure the value is between the minimum
> > and the maximum allowed limits, and if not, yell bloody murder.
> 
> I'm not so sure it's simple. You have to know
> 
> - time_t is signed / unsigned / floating point
> - time_t is 32 or 64 bits if integer
> 
> Sounds like a bunch of autoconf machinery to determine these things
> and then a bunch of ugly tests to check if you have the macros for
> min/max signed/unsigned long/longlong and then if the values are in range.
> (GNULIB fodder, essentially.)
> 
> If it really is simple, please show me the code...

There are 2 macros in Gnulib's intprops.h, called TYPE_MINIMUM and
TYPE_MAXIMUM, which is all that we need.  Never mind their insanely
complex definitions, we just need to steal them, put them on some Gawk
header, and then use them.