[ t ] [ 64 [ 2^ 0.5 * ] map [ < ] monotonic? ] unit-test
[ 5 ] [ 10.5 1.9 /i ] unit-test
+
+[ t ] [ 0/0. 0/0. unordered? ] unit-test
+[ t ] [ 1.0 0/0. unordered? ] unit-test
+[ t ] [ 0/0. 1.0 unordered? ] unit-test
+[ f ] [ 1.0 1.0 unordered? ] unit-test
+
double>bits 52 2^ 1 - bitand ; inline
M: float fp-nan?
- dup fp-special? [ fp-nan-payload zero? not ] [ drop f ] if ; inline
+ dup float= not ;
M: float fp-qnan?
dup fp-nan? [ fp-nan-payload 51 2^ bitand zero? not ] [ drop f ] if ; inline
] if
] if ; inline
+M: float unordered? [ fp-nan? ] bi@ or ; inline
+
M: float prev-float ( m -- n )
double>bits
dup -0.0 double>bits >= [ 1 + bits>double ] [ ! negative
MATH: <= ( x y -- ? ) foldable
MATH: > ( x y -- ? ) foldable
MATH: >= ( x y -- ? ) foldable
+MATH: unordered? ( x y -- ? ) foldable
+
+M: object unordered? 2drop f ;
MATH: + ( x y -- z ) foldable
MATH: - ( x y -- z ) foldable