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Conditional constraints

Question asked by tony camo on May 30, 2013
Latest reply on Aug 4, 2014 by Livio Bertacco

Hello, could you tell me if xpress supports "conditional constraints", I mean constraints as:


if x_i = x_j = 1, then y_i + C <= y_j or y_j + C <= y_i

if x_i = c_i = 1, then z_i <= a

if x_i = d_i = 1, then z_i <= b


where c_i and d_i are binary constants, a and b are real constants, y_i and z_i are a real variables, and x_i is a binary variables (0 or 1). 


or I need to convert that constraints to linear?



Thank you in advance.