These functions allow users to test conformance to
St -ieee754 .
Their use is not otherwise recommended.
scalb (x n);
and
scalbf (x n);
return
Fa x Ns *(2** Ns Fa n )
computed by exponent manipulation.
If
Fa n
is not an integer, , or an , the result is unspecified.
significand (x);
and
significandf (x);
return
Fa sig ,
where
Fa x
:=
Fa sig No * 2** Ns Fa n
with 1 <
Fa sig
< 2.
significand (x);
and
significandf (x);
are not defined when
Fa x
is 0, , or .
