On 2023-04-22 16:34, Ben Pfaff wrote:
determine whether converting 'd' to 'long' would
yield a 'long' with the same value as 'd'
LONG_MIN - 1.0 < d && d < LONG_MAX + 1.0 && d == (long) d
On all practical platforms this should avoid undefined behavior and
works correctly even if rounding occur
Building some testdir, I see this Autoconf warning:
executing autoconf
configure.ac:785: warning: AC_REQUIRE: `gt_LOCALE_FR_UTF8' was expanded before
it was required
configure.ac:785:
https://www.gnu.org/software/autoconf/manual/autoconf.html#Expanded-Before-Required
configure.ac:34: gl_INIT is
On Sat, Apr 22, 2023 at 5:52 PM Bruno Haible wrote:
>
> Ben Pfaff wrote:
> > determine whether converting 'd' to 'long' would
> > yield a 'long' with the same value as 'd'.
>
> Maybe
> d == (double) (long) d
> ?
>
> Just a wild guess. I haven't tested it.
I don't trust the undefined behavior in
Ben Pfaff wrote:
> determine whether converting 'd' to 'long' would
> yield a 'long' with the same value as 'd'.
Maybe
d == (double) (long) d
?
Just a wild guess. I haven't tested it.
Bruno
On Sat, Apr 22, 2023 at 4:34 PM Ben Pfaff wrote:
> Before this afternoon, I thought that a check like this for a double 'd':
> d == floor (d) && d >= LONG_MIN && d <= LONG_MAX
> was sufficient to determine whether converting 'd' to 'long' would
> yield a 'long' with the same value as 'd'.
>
>
Before this afternoon, I thought that a check like this for a double 'd':
d == floor (d) && d >= LONG_MIN && d <= LONG_MAX
was sufficient to determine whether converting 'd' to 'long' would
yield a 'long' with the same value as 'd'.
Now I realize that this is wrong. In particular, take a look
On mingw 10, I see this test failure:
FAIL: test-string-desc.sh
=
../../gltests/test-string-desc.c:113: assertion 'string_desc_write (3, s1) ==
0' failed
FAIL test-string-desc.sh (exit status: 1)
Apparently, in the Cygwin environment, it is not possible to pass an
open f
Gnulib's multithreading implementation can, on mingw, be based
on mingw's libwinpthread or on native Windows primitives.
But it makes a difference on the 'test-pthread-tss' test:
With mingw 5.0.3 libwinpthread it fails like this:
Starting test_tss ... OK
Starting test_tss_dtorcheck1 ... OK
Paul Eggert wrote:
> I wouldn't spend much time on it, so disabling tests on those platforms
> seems appropriate.
OK, done:
2023-04-22 Bruno Haible
posixtm tests: Avoid test failure on native Windows.
* tests/test-posixtm.c (T): On native Windows, disable test cases that
I wrote:
> > Is there some way we can instead compile or run MinGW apps so that they
> > instead follow the POSIX LF convention?
>
> Sure. Instead of the change above, I can alternatively add a
> set_binary_mode (STDOUT_FILENO, O_BINARY);
> call to the C program.
Done:
2023-04-22 Bruno Haib
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