interface to PPL and CMAES
validity_domain can return big integers instead of floating point numbers or a mixture of them like below x1=99693700/\y1=990333000.0/\x2=99916300/\y2=1000580000 This creates erroneous failures of search_parameters with CMAES which fails on big integers with message like below Stopping reason: TolFunHist: history of function value changes 0.00e+00 stopTolFunHist=1.00e-13 whereas working with normalized floating point values succeeds.
All numbers should be floating point numbers written in decimal notation