https://community.intel.com/t5/Intel-Fortran-Compiler/OpenMP-Reduction-Operator-AND/m-p/795755#M35097 Something like<BR /><BR />use ieee_arithmetic<BR />logical result<BR />real a(n)<BR />a = .....<BR />!dir$ omp parallel do reduction(.and. : result)<BR />do i=1,n<BR /> result = result .and. .not. ieee_isnan(a(i))<BR />enddo<BR /><BR />Do you have an example which is not working? Wed, 09 Nov 2011 16:42:16 GMT TimP 2011-11-09T16:42:16Z https://community.intel.com/t5/Intel-Fortran-Compiler/OpenMP-Reduction-Operator-AND/m-p/795754#M35096 <DIV>Hello All,</DIV><DIV></DIV>I am currently dealing with the operator .AND. in an OpenMP reduction clause in Fortran. Does anybody know how this reduction works?<DIV></DIV><DIV>Thanks,</DIV><DIV></DIV><DIV></DIV> Wed, 09 Nov 2011 15:32:15 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/OpenMP-Reduction-Operator-AND/m-p/795754#M35096 Noemi_Gonzalez 2011-11-09T15:32:15Z https://community.intel.com/t5/Intel-Fortran-Compiler/OpenMP-Reduction-Operator-AND/m-p/795755#M35097 Something like<BR /><BR />use ieee_arithmetic<BR />logical result<BR />real a(n)<BR />a = .....<BR />!dir$ omp parallel do reduction(.and. : result)<BR />do i=1,n<BR /> result = result .and. .not. ieee_isnan(a(i))<BR />enddo<BR /><BR />Do you have an example which is not working? Wed, 09 Nov 2011 16:42:16 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/OpenMP-Reduction-Operator-AND/m-p/795755#M35097 TimP 2011-11-09T16:42:16Z https://community.intel.com/t5/Intel-Fortran-Compiler/OpenMP-Reduction-Operator-AND/m-p/795756#M35098 Thank you.<DIV></DIV><DIV>Your post was very helpful, It works.</DIV><DIV></DIV><DIV>Noemig4</DIV> Thu, 10 Nov 2011 02:45:44 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/OpenMP-Reduction-Operator-AND/m-p/795756#M35098 Noemi_Gonzalez 2011-11-10T02:45:44Z