how to calla real positive minimum value (root) other than zero

when i solve a large non linear equation i got roots of A,B,C are,...

A =

                                                                           0
                                          -32.114420044883060433715731509755
                                          -6.2191877188613308076084617553285
                                            19.66774009539869721678902582191
                                           -19.70672892070797990233019691921
                                          0.42628008317584826478351323905199
                                         -0.42628008317584826478351323905199
                                            19.70672892070797990233019691921
                                           6.2191877188613308076084617553285
                                           -19.66774009539869721678902582191
                                           32.114420044883060433715731509755
     56.045487558618814101737314566765*i - 46.234928624004490953000782023164
     4.6889123919278069144496486059208*i + 75.880051758148945751881430196547
   - 4.6889123919278069144496486059208*i - 75.880051758148945751881430196547
   - 56.045487558618814101737314566769*i - 46.234928624004490953000782023164
     46.234928624004490953000782023164 - 56.045487558618814101737314566765*i
    - 55.842499709444820357789472430488*i - 45.22313283009320674391568674606
     56.045487558618814101737314566769*i + 46.234928624004490953000782023164
   - 16.820081627395829470602844839362*i - 24.882419975754283403894344069333
     45.223132830093206743915686746061 - 55.842499709444820357789472430493*i
     16.820081627395829470602844839362*i + 24.882419975754283403894344069333
     4.6889123919278069144496486058124*i - 75.880051758148945751881430196511
     16.820081627395829470602844839362*i - 24.882419975754283403894344069333
     75.880051758148945751881430196511 - 4.6889123919278069144496486058124*i
     55.842499709444820357789472430493*i - 45.223132830093206743915686746061
     24.882419975754283403894344069333 - 16.820081627395829470602844839362*i
      55.842499709444820357789472430488*i + 45.22313283009320674391568674606

B =

                                                                           0
                                          -34.562456035254454082492305248158
                                          -15.030879881475851305732322575373
                                           328.12776864623298242431444531374
                                           316.54859887312419127310565600726
                                          -645.36492088871617161617292532767
                                           645.36492088871617161617292532767
                                          -316.54859887312419127310565600726
                                           15.030879881475851305732322575373
                                          -328.12776864623298242431444531374
                                           34.562456035254454082492305248158
   - 494.29680810526754161217799538559*i - 313.59739854036642038970926061351
     854.17016811324477123294877389631*i - 64.675909637167328280889312021307
     64.675909637167328280889312021307 - 854.17016811324477123294877389631*i
       494.296808105267541612177995389*i - 313.59739854036642038970926061361
     494.29680810526754161217799538559*i + 313.59739854036642038970926061351
     316.34923721123653640426006254079 - 483.63930194795472892903953239293*i
       313.59739854036642038970926061361 - 494.296808105267541612177995389*i
   - 9.4530033244944742526786540776203*i - 5.9621982700005100585118197560405
   - 483.63930194795472892903953238941*i - 316.34923721123653640426006254149
     9.4530033244944742526786540776203*i + 5.9621982700005100585118197560405
     854.17016811324477123294877398355*i + 64.675909637167328280889311991216
     9.4530033244944742526786540776203*i - 5.9621982700005100585118197560405
   - 854.17016811324477123294877398355*i - 64.675909637167328280889311991216
     483.63930194795472892903953238941*i + 316.34923721123653640426006254149
     5.9621982700005100585118197560405 - 9.4530033244944742526786540776203*i
     483.63930194795472892903953239293*i - 316.34923721123653640426006254079

C =

                                                                           0
                                          -997.37069361723337168911107301014
                                           3221.4182495354501337466179875046
                                           1466.8040256186026405847285681646
                                          -1637.7159040725126654862108848131
                                          -11.281635533356620018692052453346
                                           11.281635533356620018692052453346
                                           1637.7159040725126654862108848131
                                          -3221.4182495354501337466179875046
                                          -1466.8040256186026405847285681646
                                           997.37069361723337168911107301014
     2241.1484760586942373726195539704 - 175.57358168750690512258792842519*i
     159.74492307174044721099541139145*i + 2716.8858090377773115694575136341
   - 159.74492307174044721099541139145*i - 2716.8858090377773115694575136341
     175.57358168750690512258792842519*i + 2241.1484760586942373726195539704
     175.57358168750690512258792842519*i - 2241.1484760586942373726195539704
     189.00174979114259671378760149215*i + 2177.8452601674895056427047397505
   - 175.57358168750690512258792842519*i - 2241.1484760586942373726195539704
     166.84540686129025281711811501254 - 352.99432022664107783983972667165*i
     189.00174979114259671378760149215*i - 2177.8452601674895056427047397505
     352.99432022664107783983972667165*i - 166.84540686129025281711811501254
     159.74492307174044721099541139145*i - 2716.8858090377773115694575136341
     352.99432022664107783983972667165*i + 166.84540686129025281711811501254
     2716.8858090377773115694575136341 - 159.74492307174044721099541139145*i
     2177.8452601674895056427047397505 - 189.00174979114259671378760149215*i
   - 352.99432022664107783983972667165*i - 166.84540686129025281711811501254
   - 189.00174979114259671378760149215*i - 2177.8452601674895056427047397505

how to pick areal positive root which is just greater than zero but minimum among positive values

Answer 1

[Walter Roberson]

min(A(imag(A)==0 & real(A)>0))

Answer 2

[Hari Kishore]

but the above answer when placed in program showing this error

??? Error using ==> sym.sym>notimplemented at 2621 Function 'gt' is not implemented for MuPAD symbolic objects.

Error in ==> sym.sym>sym.gt at 801 notimplemented('gt');

[Walter Roberson]

dA = double(A);
[mindA, minidx] = min(dA(imag(dA)==0 & real(dA)>0));
wanted_root = A(minidx);