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#include <TRandomAdaptor.h>
Public Types | |
| typedef value_ptr< TRandom3 > | TRandom3Ptr |
Public Member Functions | |
| std::string | beginTag () |
| double | flat () |
| void | flatArray (int const size, double *vect) |
| virtual std::istream & | get (std::istream &is) |
| bool | get (std::vector< unsigned long > const &v) |
| TRandom3 * | getRootEngine () |
| bool | getState (std::vector< unsigned long > const &v) |
| virtual std::istream & | getState (std::istream &is) |
| std::string | name () const |
| operator float () | |
| operator unsigned int () | |
| std::vector< unsigned long > | put () const |
| virtual std::ostream & | put (std::ostream &os) const |
| void | restoreStatus (char const filename[]="TRandom.conf") |
| void | saveStatus (char const filename[]="TRandom.conf") const |
| void | setSeed (long seed, int) |
| void | setSeeds (long const *seeds, int) |
| void | showStatus () const |
| TRandomAdaptor (int rowIndex, int colIndex) | |
| TRandomAdaptor (std::istream &is) | |
| TRandomAdaptor () | |
| TRandomAdaptor (long seed) | |
| virtual | ~TRandomAdaptor () |
Static Public Member Functions | |
| static std::string | engineName () |
Private Member Functions | |
| void | Grumble (std::string const &errortext) const |
Private Attributes | |
| TRandom3Ptr | trand_ |
Definition at line 13 of file TRandomAdaptor.h.
| typedef value_ptr<TRandom3> edm::TRandomAdaptor::TRandom3Ptr |
Definition at line 16 of file TRandomAdaptor.h.
| edm::TRandomAdaptor::TRandomAdaptor | ( | ) | [inline] |
Definition at line 19 of file TRandomAdaptor.h.
: trand_(new TRandom3()) {}
| edm::TRandomAdaptor::TRandomAdaptor | ( | long | seed | ) | [inline] |
Definition at line 20 of file TRandomAdaptor.h.
: trand_(new TRandom3(seed)) {}
| edm::TRandomAdaptor::TRandomAdaptor | ( | int | rowIndex, |
| int | colIndex | ||
| ) | [inline] |
Definition at line 21 of file TRandomAdaptor.h.
: trand_(new TRandom3(rowIndex*colIndex-1)) {}
| edm::TRandomAdaptor::TRandomAdaptor | ( | std::istream & | is | ) |
Definition at line 17 of file TRandomAdaptor.cc.
References Grumble().
{
Grumble(std::string("Cannot instantiate a TRandom engine from an istream"));
}
| edm::TRandomAdaptor::~TRandomAdaptor | ( | ) | [virtual] |
Definition at line 21 of file TRandomAdaptor.cc.
{
}
| std::string edm::TRandomAdaptor::beginTag | ( | ) | [inline] |
Definition at line 55 of file TRandomAdaptor.h.
References trand_.
{ return std::string(trand_->GetName())+std::string("-begin"); }
| static std::string edm::TRandomAdaptor::engineName | ( | ) | [inline, static] |
Definition at line 60 of file TRandomAdaptor.h.
{ return std::string("TRandomAdaptor"); }
| double edm::TRandomAdaptor::flat | ( | void | ) | [inline] |
| void edm::TRandomAdaptor::flatArray | ( | int const | size, |
| double * | vect | ||
| ) | [inline] |
Definition at line 29 of file TRandomAdaptor.h.
References trand_.
| bool edm::TRandomAdaptor::get | ( | std::vector< unsigned long > const & | v | ) |
Definition at line 75 of file TRandomAdaptor.cc.
{
if(v.empty()) return false;
if(v[0] != CLHEP::engineIDulong<TRandomAdaptor>()) return false;
int32_t numItems = v.size()-1;
int32_t itemSize = sizeof(uint32_t);
TBufferFile buffer(TBuffer::kRead, numItems * itemSize + 1024);
char* bufferPtr = buffer.Buffer();
for(int32_t i = 0; i < numItems; ++i) {
*reinterpret_cast<uint32_t *>(bufferPtr + i * itemSize) = static_cast<uint32_t>(v[i+1] & 0xffffffff);
}
// Note that this will fail if the TRandom3 version (specifically the TStreamerInfo)
// has changed between the time the state was saved and the time the following call
// is made. Because we are manually calling the Streamer function, the original
// TStreamerInfo is not saved anywhere. Normally ROOT saves the TStreamerInfo
// automatically.
trand_->Streamer(buffer);
return true;
}
| std::istream & edm::TRandomAdaptor::get | ( | std::istream & | is | ) | [virtual] |
Definition at line 65 of file TRandomAdaptor.cc.
References getState(), and Grumble().
| TRandom3* edm::TRandomAdaptor::getRootEngine | ( | ) | [inline] |
| bool edm::TRandomAdaptor::getState | ( | std::vector< unsigned long > const & | v | ) | [inline] |
| std::istream & edm::TRandomAdaptor::getState | ( | std::istream & | is | ) | [virtual] |
Definition at line 70 of file TRandomAdaptor.cc.
References Grumble().
Referenced by get().
{
Grumble(std::string("getState(std::istream) not available for TRandom engines"));
return is;
}
| void edm::TRandomAdaptor::Grumble | ( | std::string const & | errortext | ) | const [private] |
Definition at line 98 of file TRandomAdaptor.cc.
References except, and edm::errors::UnimplementedFeature.
Referenced by get(), getState(), put(), and TRandomAdaptor().
{
// Throw an edm::Exception for unimplemented functions
std::ostringstream sstr;
sstr << "Unimplemented Feature: " << errortext << '\n';
edm::Exception except(edm::errors::UnimplementedFeature, sstr.str());
throw except;
}
| std::string edm::TRandomAdaptor::name | ( | ) | const [inline] |
Definition at line 59 of file TRandomAdaptor.h.
References trand_.
{ return std::string("T")+std::string(trand_->GetName()); }
| edm::TRandomAdaptor::operator float | ( | ) | [inline] |
Definition at line 48 of file TRandomAdaptor.h.
References trand_.
{ return (float)(trand_->Rndm()); }
| edm::TRandomAdaptor::operator unsigned int | ( | ) | [inline] |
Definition at line 51 of file TRandomAdaptor.h.
References trand_.
{ return (unsigned int)((trand_->Rndm())*exponent_bit_32); }
| std::vector< unsigned long > edm::TRandomAdaptor::put | ( | ) | const |
Definition at line 29 of file TRandomAdaptor.cc.
{
std::vector<unsigned long> v;
int32_t itemSize = sizeof(uint32_t);
TBufferFile buffer(TBuffer::kWrite, 2048 * itemSize);
trand_->Streamer(buffer);
buffer.SetReadMode();
char* bufferPtr = buffer.Buffer();
int32_t numItems = (buffer.Length() + itemSize - 1) / itemSize;
v.reserve(numItems + 1);
v.push_back (CLHEP::engineIDulong<TRandomAdaptor>());
for( int i = 0; i < numItems; ++i) {
// Here we do some ugly manipulations to the data to match the format
// of the output of the CLHEP put function (the whole point of this adaptor
// is to make TRandom3 work through the CLHEP interface as if it were a
// a CLHEP engine ...). In CLHEP, the vector returned by put contains
// unsigned long's, but these always contain only 32 bits of information.
// In the case of a 64 bit build the top 32 bits is only padding (all 0's).
// Get the next 32 bits of data from the buffer
uint32_t value32 = *reinterpret_cast<uint32_t *>(bufferPtr + i * itemSize);
if (i == numItems - 1) {
int nBytes = buffer.Length() % itemSize;
if (nBytes == 1) value32 &= 0xffu;
else if (nBytes == 2) value32 &= 0xffffu;
else if (nBytes == 3) value32 &= 0xffffffu;
}
// Push it into the vector in an unsigned long which may be 32 or 64 bits
v.push_back(static_cast<unsigned long>(value32));
}
return v;
}
| std::ostream & edm::TRandomAdaptor::put | ( | std::ostream & | os | ) | const [virtual] |
Definition at line 24 of file TRandomAdaptor.cc.
References Grumble().
{
Grumble(std::string("put(std::ostream) not available for TRandom engines"));
return os;
}
| void edm::TRandomAdaptor::restoreStatus | ( | char const | filename[] = "TRandom.conf" | ) | [inline] |
Definition at line 42 of file TRandomAdaptor.h.
References lut2db_cfg::filename, and trand_.
| void edm::TRandomAdaptor::saveStatus | ( | char const | filename[] = "TRandom.conf" | ) | const [inline] |
Definition at line 39 of file TRandomAdaptor.h.
References lut2db_cfg::filename, and trand_.
| void edm::TRandomAdaptor::setSeed | ( | long | seed, |
| int | |||
| ) | [inline] |
| void edm::TRandomAdaptor::setSeeds | ( | long const * | seeds, |
| int | |||
| ) | [inline] |
| void edm::TRandomAdaptor::showStatus | ( | ) | const [inline] |
TRandom3Ptr edm::TRandomAdaptor::trand_ [private] |
Definition at line 73 of file TRandomAdaptor.h.
Referenced by beginTag(), flat(), flatArray(), get(), getRootEngine(), name(), operator float(), operator unsigned int(), put(), restoreStatus(), saveStatus(), setSeed(), setSeeds(), and showStatus().
1.7.3