This information is part of the Modelica Standard Library maintained by the Modelica Association.

Syntax

oneTrue(b);

Description

Returns true if exactly one element of the input Boolean vector b is true. Otherwise the function returns false. If b is an empty vector, i.e., size(b,1)=0, the function returns false.

Example

  Boolean b1[3] = {false, false, false};
  Boolean b2[3] = {false, true, false};
  Boolean b3[3] = {false, true, true};
  Boolean r1, r2, r3;
algorithm
  r1 = oneTrue(b1);  // r1 = false
  r2 = oneTrue(b2);  // r2 = true
  r3 = oneTrue(b3);  // r3 = false

See also

allTrue, andTrue, anyTrue, countTrue, enumerate, firstTrueIndex, and index.