On Wed, Apr 05, 2017 at 10:22:28PM +0200, Iain Buclaw wrote:
> Which compiler?
$ LANG=C apt-cache policy ldc
ldc:
Installed: 1:1.1.1-1
> Are NaNs being honoured?
Hmmm, no idea how to check this.
> What if you were to replace
> the `(x != x && f != f)` comparison with `(isNaN(x) && isNaN(f))` ?
If I apply the following patch
--- a/src/undead/stream.d
+++ b/src/undead/stream.d
@@ -1455,7 +1455,7 @@ class Stream : InputStream, OutputStream
float f;
assert(s.readf(&f));
- assert(x == f || (x != x && f != f)); //either equal or both NaN
+ assert(x == f || (isNaN(x) && isNaN(f))); //either equal or both NaN
}
tryFloatRoundtrip(1.0);
I get
...
[12/25] ldc2 '-Iundead_test@exe' '-I.' '-I..' '-I../src/' '-enable-color' '-O'
'-release' '-g' '-unittest' -of 'undead_test@exe/src_undead_stream.d.o' -c
../src/undead/stream.d
FAILED: undead_test@exe/src_undead_stream.d.o
ldc2 '-Iundead_test@exe' '-I.' '-I..' '-I../src/' '-enable-color' '-O'
'-release' '-g' '-unittest' -of 'undead_test@exe/src_undead_stream.d.o' -c
../src/undead/stream.d
../src/undead/stream.d(1458): Error: undefined identifier 'isNaN'
../src/undead/stream.d(1458): Error: undefined identifier 'isNaN'
I have the feelingt that this meand "no" to your second question.
Any other hints?
Kind regards
Andreas.
--
http://fam-tille.de
