Description of pos

pos_half		Programmers Guide
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Category:intervals,utilities

Component type:function

Prototype

template <class Tnum> interval<Tnum> pos_half(const interval<Tnum>& x) ;

Description

Returns the positive portion of an interval. That is, the subset of the original interval in which all members are >0. If none of the interval is positive, it returns a NaN.
positive half of [-3,5] would be [0,5].
positive half of [3,5] would be [3,5].
positive half of [-2,-2] would be NaN.

Definition

interval.cct

Preconditions

Complexity

Example

In half.cc:

  cout << "positive half :" << pos_half(A) << endl;
  cout << "negative half :" << neg_half(A) << endl;
  cout << "midpoint      :" << midpoint(A) << endl;
  cout << "bisect (left) :" << bisect(A).first << endl;
  cout << "bisect (right):" << bisect(A).second << endl;

  cout << "diameter      :" << diameter(A) << endl;
  cout << "abs           :" << abs(A) << endl;

Notes

See also