+2023-02-03 Paul Eggert <eggert@cs.ucla.edu>
+
+ isnan: update comment
+ * lib/isnan.c: Update comment for C23.
+
2023-01-30 Bruno Haible <bruno@clisp.org>
at-internal: Fix support for z/OS.
/* Most hosts nowadays use IEEE floating point, so they use IEC 60559
representations, have infinities and NaNs, and do not trap on
exceptions. Define IEEE_FLOATING_POINT if this host is one of the
- typical ones. The C11 macro __STDC_IEC_559__ is close to what is
+ typical ones. The C23 macro __STDC_IEC_60559_BFP__ macro (or its cousin,
+ the now-obsolescent C11 macro __STDC_IEC_559__) is close to what is
wanted here, but is not quite right because this file does not require
- all the features of C11 Annex F (and does not require C11 at all,
+ all the features of C23 Annex F (and works even with pre-C11 platforms,
for that matter). */
#define IEEE_FLOATING_POINT (FLT_RADIX == 2 && FLT_MANT_DIG == 24 \