Add HAS_FREXPL, HAS_ISNAN, HAS_ISNANL, and HAS_MODFL.

Now pp_ncmp() returns undef is either operand is a NaN.

p4raw-id: //depot/cfgperl@5943

1 files changed, 8 insertions, 6 deletions

diff --git a/Todo-5.6 b/Todo-5.6
index 9abeb55ebb..fac325c704 100644
--- a/Todo-5.6
+++ b/Todo-5.6
@@ -125,12 +125,14 @@ Miscellaneous
 	Configure doesn't yet probe for usleep/nanosleep/ualarm but
 	the units exist)
     floating point handling: nans, infinities, fp exception masks, etc.
-	at least the following interfaces exist: fp_classify(), fp_class(),
-	class(), isnan(), isinf(), isfinite(), finite(), isnormal(),
-	ordered(), fp_setmask(), fp_getmask(), fp_setround(), fp_getround(), 
-	ieeefp.h, fp_class.h.  There are metaconfig units for most of these.
-        Search for ifdef __osf__ in pp.c to find a temporary fix that
-	needs to be done right.
+	At least the following interfaces exist: fp_classify(), fp_class(),
+	class(), isinf(), isfinite(), finite(), isnormal(), unordered(),
+	<ieeefp.h>, <fp_class.h> (there are metaconfig units for all these),
+	fp_setmask(), fp_getmask(), fp_setround(), fp_getround()
+	(no metaconfig units yet for these).
+        Don't forget finitel(), fp_classl(), fp_class_l(), (yes, both do,
+	unfortunately, exist), and unorderedl().
+	As of 5.6.1 there is cpp macro Perl_isnan().
     fix the basic arithmetics (+ - * / %) to preserve IVness/UVness if
 	both arguments are IVs/UVs
     replace pod2html with new PodtoHtml? (requires other modules from CPAN)