Method on @infsup: ceil (X)

Round each number in interval X towards +Inf.

Accuracy: The result is a tight enclosure.

ceil (infsup (2.5, 3.5))
  ⇒ ans = [3, 4]
ceil (infsup (-0.5, 5))
  ⇒ ans = [0, 5]

See also: @infsup/floor, @infsup/round, @infsup/roundb, @infsup/fix.

Package: interval