Create a bare interval. Fail, if the interval cannot exactly represent the input.
Typically, this function operates on interval literals S. It is also possible to pass lower and upper boundaries L and U, or create a point-interval with a midpoint M.
All valid input formats of the infsup class constructor are
allowed. By giving a cell as input it is possible to create
N-dimensional interval arrays. If this function creates an
interval array, all interval boundaries must be representable with
binary64 numbers.
Accuracy: The equation
X == exacttointerval (intervaltoexact (X)) holds for all
intervals.
w = exacttointerval ("[ ]")
⇒ w = [Empty]
x = exacttointerval ("[2, 3]")
⇒ x = [2, 3]
y = exacttointerval ("[,]")
⇒ y = [Entire]
z = exacttointerval ("[21e-1]")
-| ??? exacttointerval: interval wouldn't be exact
See also: @infsup/intervaltoexact, @infsup/infsup.
Package: interval