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TLeafD.cxx
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1// @(#)root/tree:$Id$
2// Author: Rene Brun 12/01/96
3
4/*************************************************************************
5 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
11
12/** \class TLeafD
13\ingroup tree
14
15A TLeaf for a 64 bit floating point data type.
16*/
17
18#include "TLeafD.h"
19#include "TBranch.h"
20#include "TBuffer.h"
21#include "TClonesArray.h"
22#include <iostream>
23
25
26////////////////////////////////////////////////////////////////////////////////
27/// Default constructor for LeafD.
28
30{
31 fLenType = 8;
32 fMinimum = 0;
33 fMaximum = 0;
34 fValue = 0;
35 fPointer = 0;
36}
37
38////////////////////////////////////////////////////////////////////////////////
39/// Create a LeafD.
40
41TLeafD::TLeafD(TBranch *parent, const char *name, const char *type)
42 :TLeaf(parent, name,type)
43{
44 fLenType = 8;
45 fMinimum = 0;
46 fMaximum = 0;
47 fValue = 0;
48 fPointer = 0;
49}
50
51////////////////////////////////////////////////////////////////////////////////
52/// Default destructor for a LeafD.
53
55{
56 if (ResetAddress(0,kTRUE)) delete [] fValue;
57}
58
59////////////////////////////////////////////////////////////////////////////////
60/// Export element from local leaf buffer to ClonesArray.
61
63{
64 Int_t j = 0;
65 for (Int_t i=0;i<n;i++) {
66 memcpy((char*)list->UncheckedAt(i) + fOffset,&fValue[j], 8*fLen);
67 j += fLen;
68 }
69}
70
71////////////////////////////////////////////////////////////////////////////////
72/// Pack leaf elements in Basket output buffer.
73
75{
76 Int_t len = GetLen();
77 if (fPointer) fValue = *fPointer;
78 b.WriteFastArray(fValue,len);
79}
80
81////////////////////////////////////////////////////////////////////////////////
82/// Import element from ClonesArray into local leaf buffer.
83
85{
86 const Double_t kDoubleUndefined = -9999.;
87 Int_t j = 0;
88 char *clone;
89 for (Int_t i=0;i<n;i++) {
90 clone = (char*)list->UncheckedAt(i);
91 if (clone) memcpy(&fValue[j],clone + fOffset, 8*fLen);
92 else memcpy(&fValue[j],&kDoubleUndefined, 8*fLen);
93 j += fLen;
94 }
95}
96
97////////////////////////////////////////////////////////////////////////////////
98/// Prints leaf value.
99
101{
102 Double_t *value = (Double_t *)GetValuePointer();
103 printf("%g",value[l]);
104}
105
106////////////////////////////////////////////////////////////////////////////////
107/// Read leaf elements from Basket input buffer.
108
110{
111 if (!fLeafCount && fNdata == 1) {
112 b.ReadDouble(fValue[0]);
113 }else {
114 if (fLeafCount) {
115 Long64_t entry = fBranch->GetReadEntry();
116 if (fLeafCount->GetBranch()->GetReadEntry() != entry) {
117 fLeafCount->GetBranch()->GetEntry(entry);
118 }
119 Int_t len = Int_t(fLeafCount->GetValue());
120 if (len > fLeafCount->GetMaximum()) {
121 printf("ERROR leaf:%s, len=%d and max=%d\n",GetName(),len,fLeafCount->GetMaximum());
122 len = fLeafCount->GetMaximum();
123 }
124 fNdata = len*fLen;
125 b.ReadFastArray(fValue,len*fLen);
126 } else {
127 b.ReadFastArray(fValue,fLen);
128 }
129 }
130}
131
132// Deserialize N events from an input buffer.
134 if (R__unlikely(fLeafCount)) { return false; }
135 return input_buf.ByteSwapBuffer(fLen*N, kDouble_t);
136}
137
138////////////////////////////////////////////////////////////////////////////////
139/// Read leaf elements from Basket input buffer and export buffer to
140/// TClonesArray objects.
141
143{
144 b.ReadFastArray(fValue,n*fLen);
145
146 Int_t j = 0;
147 for (Int_t i=0;i<n;i++) {
148 memcpy((char*)list->UncheckedAt(i) + fOffset,&fValue[j], 8*fLen);
149 j += fLen;
150 }
151}
152
153////////////////////////////////////////////////////////////////////////////////
154/// Read a double from std::istream s and store it into the branch buffer.
155
156void TLeafD::ReadValue(std::istream &s, Char_t /*delim = ' '*/)
157{
158 Double_t *value = (Double_t*)GetValuePointer();
159 for (Int_t i=0;i<fLen;i++) s >> value[i];
160}
161
162////////////////////////////////////////////////////////////////////////////////
163/// Set leaf buffer data address.
164
165void TLeafD::SetAddress(void *add)
166{
167 if (ResetAddress(add) && (add!= fValue)) {
168 delete [] fValue;
169 }
170 if (add) {
172 fPointer = (Double_t**) add;
173 Int_t ncountmax = fLen;
174 if (fLeafCount) ncountmax = fLen*(fLeafCount->GetMaximum() + 1);
175 if ((fLeafCount && ncountmax > Int_t(fLeafCount->GetValue())) ||
176 ncountmax > fNdata || *fPointer == 0) {
177 if (*fPointer) delete [] *fPointer;
178 if (ncountmax > fNdata) fNdata = ncountmax;
179 *fPointer = new Double_t[fNdata];
180 }
181 fValue = *fPointer;
182 } else {
183 fValue = (Double_t*)add;
184 }
185 } else {
186 fValue = new Double_t[fNdata];
187 fValue[0] = 0;
188 }
189}
#define R__unlikely(expr)
Definition: RConfig.hxx:595
#define b(i)
Definition: RSha256.hxx:100
int Int_t
Definition: RtypesCore.h:45
char Char_t
Definition: RtypesCore.h:33
double Double_t
Definition: RtypesCore.h:59
long long Long64_t
Definition: RtypesCore.h:80
const Bool_t kTRUE
Definition: RtypesCore.h:100
#define ClassImp(name)
Definition: Rtypes.h:364
@ kDouble_t
Definition: TDataType.h:31
#define N
char name[80]
Definition: TGX11.cxx:110
int type
Definition: TGX11.cxx:121
A TTree is a list of TBranches.
Definition: TBranch.h:89
virtual Int_t GetEntry(Long64_t entry=0, Int_t getall=0)
Read all leaves of entry and return total number of bytes read.
Definition: TBranch.cxx:1644
Long64_t GetReadEntry() const
Definition: TBranch.h:233
Buffer base class used for serializing objects.
Definition: TBuffer.h:43
Bool_t ByteSwapBuffer(Long64_t n, EDataType type)
Byte-swap N primitive-elements in the buffer.
Definition: TBuffer.cxx:392
An array of clone (identical) objects.
Definition: TClonesArray.h:29
A TLeaf for a 64 bit floating point data type.
Definition: TLeafD.h:26
virtual void ReadBasketExport(TBuffer &b, TClonesArray *list, Int_t n)
Read leaf elements from Basket input buffer and export buffer to TClonesArray objects.
Definition: TLeafD.cxx:142
Double_t fMaximum
Maximum value if leaf range is specified.
Definition: TLeafD.h:30
virtual void PrintValue(Int_t i=0) const
Prints leaf value.
Definition: TLeafD.cxx:100
virtual bool ReadBasketFast(TBuffer &, Long64_t)
Definition: TLeafD.cxx:133
Double_t * fValue
! Pointer to data buffer
Definition: TLeafD.h:31
virtual void ReadValue(std::istream &s, Char_t delim=' ')
Read a double from std::istream s and store it into the branch buffer.
Definition: TLeafD.cxx:156
virtual void * GetValuePointer() const
Definition: TLeafD.h:44
virtual ~TLeafD()
Default destructor for a LeafD.
Definition: TLeafD.cxx:54
virtual void SetAddress(void *add=0)
Set leaf buffer data address.
Definition: TLeafD.cxx:165
Double_t fMinimum
Minimum value if leaf range is specified.
Definition: TLeafD.h:29
TLeafD()
Default constructor for LeafD.
Definition: TLeafD.cxx:29
virtual void Import(TClonesArray *list, Int_t n)
Import element from ClonesArray into local leaf buffer.
Definition: TLeafD.cxx:84
Double_t ** fPointer
! Address of pointer to data buffer
Definition: TLeafD.h:32
virtual void Export(TClonesArray *list, Int_t n)
Export element from local leaf buffer to ClonesArray.
Definition: TLeafD.cxx:62
virtual void FillBasket(TBuffer &b)
Pack leaf elements in Basket output buffer.
Definition: TLeafD.cxx:74
virtual void ReadBasket(TBuffer &b)
Read leaf elements from Basket input buffer.
Definition: TLeafD.cxx:109
A TLeaf describes individual elements of a TBranch See TBranch structure in TTree.
Definition: TLeaf.h:57
virtual Double_t GetValue(Int_t i=0) const
Definition: TLeaf.h:183
Int_t fLenType
Number of bytes for this data type.
Definition: TLeaf.h:73
virtual Int_t GetMaximum() const
Definition: TLeaf.h:134
Int_t fLen
Number of fixed length elements in the leaf's data.
Definition: TLeaf.h:72
Int_t fNdata
! Number of elements in fAddress data buffer.
Definition: TLeaf.h:71
virtual Int_t GetLen() const
Return the number of effective elements of this leaf, for the current entry.
Definition: TLeaf.cxx:404
TBranch * GetBranch() const
Definition: TLeaf.h:116
Int_t fOffset
Offset in ClonesArray object (if one)
Definition: TLeaf.h:74
Int_t ResetAddress(void *add, Bool_t calledFromDestructor=kFALSE)
Helper routine for TLeafX::SetAddress.
Definition: TLeaf.cxx:429
TBranch * fBranch
! Pointer to supporting branch (we do not own the branch)
Definition: TLeaf.h:78
TLeaf * fLeafCount
Pointer to Leaf count if variable length (we do not own the counter)
Definition: TLeaf.h:77
@ kIndirectAddress
Data member is a pointer to an array of basic types.
Definition: TLeaf.h:95
virtual const char * GetName() const
Returns name of object.
Definition: TNamed.h:47
TObject * UncheckedAt(Int_t i) const
Definition: TObjArray.h:90
R__ALWAYS_INLINE Bool_t TestBit(UInt_t f) const
Definition: TObject.h:187
const Int_t n
Definition: legend1.C:16
static constexpr double s
auto * l
Definition: textangle.C:4