Merge pull request #445 from MartinNowak/nceg

remove NCEG specs

d-floating-point.dd

@@ -243,21 +243,6 @@ $(LI $(D ulong getNaNPayload(real x)) -- returns the integer payload. Note that
 
 $(P $(I Never) store a pointer as an integer payload inside a NaN. The garbage collector will not be able to find it!)
 
-$(H2 NCEG comparison operations)
-
-$(P As well as the usual $(D <), $(D >), $(D <=), and $(D >=) comparison operators, D also supports the "NCEG" operators. Most of them are the direct negation of the ordinary operators. Additionally, $(D <>), $(D <>=), $(D !<>), and $(D !<>=) are provided. These 8 new operators are different from the normal operators only when a NaN is involved, so for the most part they are quite obscure. They are useful mainly in eliminating the possibility of NaN before beginning a calculation.
-The most useful relationships are probably:
-$(UL
-$(LI $(D x  <>= y)   is the same as $(D !isNaN(x) && !isNaN(y)), (except that signalling NaNs may be triggered by <>=).)
-$(LI $(D x !<>= y)   is the same as $(D isNaN(x) ||  isNaN(y)).)
-)
-If $(D y) is any compile-time constant (eg 0), these reduce to $(D !isNaN(x) and isNaN(x)).
-Note that $(D x==x) is the same as $(D !isNaN(x)), and $(D x!=x) is the same as $(D isNaN(x)).
-$(D abs(x) !< x.infinity)  is the same as $(D isNaN(x) || isInfinity(x))
-The above relationships are useful primarily because they can be used in compile time functions.
-Very few uses are known for the remaining NCEG operators.
-)
-
 $(H2 The IEEE Rounding Modes)
 
 $(P The rounding mode is controlled within a scope. Rounding mode will be restored to its previous state at the end of that scope.

float.dd

@@ -122,25 +122,6 @@ $(H3 Exception Flags)
 	$(P These flags can be set/reset via the functions in
 	$(DPLLINK phobos/std_c_fenv.html, std.c.fenv).)
 
-$(H3 Floating Point Comparisons)
-
-	$(P In addition to the usual $(D <) $(D <)$(D =)
-	$(D >) $(D >)$(D =) $(D ==) $(D !=) comparison
-	operators, D adds more that are
-	specific to floating point. These are
-	$(D !<>=)
-	$(D <>)
-	$(D <>=)
-	$(D !<=)
-	$(D !<)
-	$(D !>=)
-	$(D !>)
-	$(D !<>)
-	and match the semantics for the
-	NCEG extensions to C.
-	See $(DDSUBLINK expression, floating_point_comparisons, Floating point comparisons).
-	)
-
 $(H3 $(LNAME2 floating-point-transformations, Floating Point Transformations))
 
 	$(P An implementation may perform transformations on