TMath::Limits not found

ROOT
1

hi all

i have a code that gives errors when i compile in g++ like :

 error: ‘Limits’ is not a member of ‘TMath’
 error: expected primary-expression before ‘>’ token
 error: ‘::Max’ has not been declared

and gives error in ROOT like

Error: Symbol Limits is not defined in current scope  PropagatorGeom.C:845:
Error: Symbol double is not defined in current scope  PropagatorGeom.C:845:

The relevant lines in code are :

lengths[itrack]=TMath::Limits<double>::Max();

is this a deprecated function ? if yes what would be the appropriate substitute ?

thanks

2

Hi,

This is quite new function, introduced in the latest release, 5.30. If you are using an older version they are not there. You can use std::numeric_limits
Best Regards,
Lorenzo

3

thanks , i built v5.30.1 and the error is gone, so now its working fine when i run it in root, but when i try to compile using g++ i get errors. i think i am missing a library, but i dont know which one. please have a look :

g++ `root-config --cflags --evelibs` PropagatorGeomCXX.cxx /tmp/ccrBVE4S.o: In function `__static_initialization_and_destruction_0(int, int)': PropagatorGeomCXX.cxx:(.text+0x7796): undefined reference to `ROOT::GenerateInitInstance(GeantOutput const*)' PropagatorGeomCXX.cxx:(.text+0x77b8): undefined reference to `ROOT::GenerateInitInstance(GeantVolumeBasket const*)' /tmp/ccrBVE4S.o: In function `GeantVolumeBasket::IsA() const': PropagatorGeomCXX.cxx:(.text._ZNK17GeantVolumeBasket3IsAEv[GeantVolumeBasket::IsA() const]+0xd): undefined reference to `GeantVolumeBasket::Class()' /tmp/ccrBVE4S.o: In function `GeantOutput::IsA() const': PropagatorGeomCXX.cxx:(.text._ZNK11GeantOutput3IsAEv[GeantOutput::IsA() const]+0xd): undefined reference to `GeantOutput::Class()' /tmp/ccrBVE4S.o:(.rodata._ZTV17GeantVolumeBasket[vtable for GeantVolumeBasket]+0x1d0): undefined reference to `GeantVolumeBasket::ShowMembers(TMemberInspector&)' /tmp/ccrBVE4S.o:(.rodata._ZTV17GeantVolumeBasket[vtable for GeantVolumeBasket]+0x1d8): undefined reference to `GeantVolumeBasket::Streamer(TBuffer&)' /tmp/ccrBVE4S.o:(.rodata._ZTV11GeantOutput[vtable for GeantOutput]+0x1d0): undefined reference to `GeantOutput::ShowMembers(TMemberInspector&)' /tmp/ccrBVE4S.o:(.rodata._ZTV11GeantOutput[vtable for GeantOutput]+0x1d8): undefined reference to `GeantOutput::Streamer(TBuffer&)' collect2: ld returned 1 exit status

i am doing this because i want to make this multithreaded using openMP

4

amehrotr,

It looks like the compiler version you used to compile root in not the same as the one you used to compile your code.

5

[quote=“nbubis”]amehrotr,

It looks like the compiler version you used to compile root in not the same as the one you used to compile your code.[/quote]

Yes I used Intel compiler for building ROOT . But why should it affect this particular compilation ?

I get the same errors with icpc:

icpc PropagatorGeomCXX.cxx `root-config --cflags --evelibs`
/tmp/icpccdAOoZ.o: In function `__sti__$E':
PropagatorGeomCXX.cxx:(.text+0xa94a): undefined reference to `ROOT::GenerateInitInstance(GeantOutput const*)'
PropagatorGeomCXX.cxx:(.text+0xa969): undefined reference to `ROOT::GenerateInitInstance(GeantVolumeBasket const*)'
/tmp/icpccdAOoZ.o: In function `GeantVolumeBasket::IsA() const':
PropagatorGeomCXX.cxx:(.gnu.linkonce.t._ZNK17GeantVolumeBasket3IsAEv[.gnu.linkonce.t._ZNK17GeantVolumeBasket3IsAEv]+0x2): undefined reference to `GeantVolumeBasket::Class()'
/tmp/icpccdAOoZ.o: In function `GeantOutput::IsA() const':
PropagatorGeomCXX.cxx:(.gnu.linkonce.t._ZNK11GeantOutput3IsAEv[.gnu.linkonce.t._ZNK11GeantOutput3IsAEv]+0x2): undefined reference to `GeantOutput::Class()'
/tmp/icpccdAOoZ.o:(.gnu.linkonce.d._ZTV17GeantVolumeBasket[.gnu.linkonce.d._ZTV17GeantVolumeBasket]+0x1d0): undefined reference to `GeantVolumeBasket::ShowMembers(TMemberInspector&)'
/tmp/icpccdAOoZ.o:(.gnu.linkonce.d._ZTV17GeantVolumeBasket[.gnu.linkonce.d._ZTV17GeantVolumeBasket]+0x1d8): undefined reference to `GeantVolumeBasket::Streamer(TBuffer&)'
/tmp/icpccdAOoZ.o:(.gnu.linkonce.d._ZTV11GeantOutput[.gnu.linkonce.d._ZTV11GeantOutput]+0x1d0): undefined reference to `GeantOutput::ShowMembers(TMemberInspector&)'
/tmp/icpccdAOoZ.o:(.gnu.linkonce.d._ZTV11GeantOutput[.gnu.linkonce.d._ZTV11GeantOutput]+0x1d8): undefined reference to `GeantOutput::Streamer(TBuffer&)'
6

ah, i got it, hadn’t removed the ClassImp and ClassDef statements from the macro file. :unamused:

thanks guys.