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TLeafF.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 TLeafF
13\ingroup tree
14
15A TLeaf for a 32 bit floating point data type.
16*/
17
18#include "TLeafF.h"
19#include "TBranch.h"
20#include "TBuffer.h"
21#include "TClonesArray.h"
22#include <iostream>
23
25
26////////////////////////////////////////////////////////////////////////////////
27/// Default constructor for LeafF.
28
30{
31 fLenType = 4;
32 fMinimum = 0;
33 fMaximum = 0;
34 fValue = 0;
35 fPointer = 0;
36}
37
38////////////////////////////////////////////////////////////////////////////////
39/// Create a LeafF.
40
41TLeafF::TLeafF(TBranch *parent, const char *name, const char *type)
42 :TLeaf(parent, name,type)
43{
44 fLenType = 4;
45 fMinimum = 0;
46 fMaximum = 0;
47 fValue = 0;
48 fPointer = 0;
49}
50
51////////////////////////////////////////////////////////////////////////////////
52/// Default destructor for a LeafF.
53
55{
56 if (ResetAddress(0,kTRUE)) delete [] fValue;
57}
58
59////////////////////////////////////////////////////////////////////////////////
60/// Export element from local leaf buffer to ClonesArray.
61
63{
64 Float_t *value = fValue;
65 for (Int_t i=0;i<n;i++) {
66 char *first = (char*)list->UncheckedAt(i);
67 Float_t *ff = (Float_t*)&first[fOffset];
68 for (Int_t j=0;j<fLen;j++) {
69 ff[j] = value[j];
70 }
71 value += fLen;
72 }
73}
74
75////////////////////////////////////////////////////////////////////////////////
76/// Pack leaf elements in Basket output buffer.
77
79{
80 Int_t len = GetLen();
81 if (fPointer) fValue = *fPointer;
82 b.WriteFastArray(fValue,len);
83}
84
85////////////////////////////////////////////////////////////////////////////////
86/// Import element from ClonesArray into local leaf buffer.
87
89{
90 const Float_t kFloatUndefined = -9999.;
91 Int_t j = 0;
92 char *clone;
93 for (Int_t i=0;i<n;i++) {
94 clone = (char*)list->UncheckedAt(i);
95 if (clone) memcpy(&fValue[j],clone + fOffset, 4*fLen);
96 else memcpy(&fValue[j],&kFloatUndefined, 4*fLen);
97 j += fLen;
98 }
99}
100
101////////////////////////////////////////////////////////////////////////////////
102/// Prints leaf value.
103
105{
106 Float_t *value = (Float_t *)GetValuePointer();
107 printf("%g",value[l]);
108}
109
110////////////////////////////////////////////////////////////////////////////////
111/// Read leaf elements from Basket input buffer.
112
114{
115 if (!fLeafCount && fNdata == 1) {
116 b.ReadFloat(fValue[0]);
117 }else {
118 if (fLeafCount) {
119 Long64_t entry = fBranch->GetReadEntry();
120 if (fLeafCount->GetBranch()->GetReadEntry() != entry) {
121 fLeafCount->GetBranch()->GetEntry(entry);
122 }
123 Int_t len = Int_t(fLeafCount->GetValue());
124 if (len > fLeafCount->GetMaximum()) {
125 printf("ERROR leaf:%s, len=%d and max=%d\n",GetName(),len,fLeafCount->GetMaximum());
126 len = fLeafCount->GetMaximum();
127 }
128 fNdata = len*fLen;
129 b.ReadFastArray(fValue,len*fLen);
130 } else {
131 b.ReadFastArray(fValue,fLen);
132 }
133 }
134}
135
136// Deserialize N events from an input buffer.
138 if (R__unlikely(fLeafCount)) {return false;}
139 return input_buf.ByteSwapBuffer(fLen*N, kFloat_t);
140}
141
142////////////////////////////////////////////////////////////////////////////////
143/// Read leaf elements from Basket input buffer and export buffer to
144/// TClonesArray objects.
145
147{
148 if (n*fLen == 1) {
149 b >> fValue[0];
150 } else {
151 b.ReadFastArray(fValue,n*fLen);
152 }
153
154 Float_t *value = fValue;
155 for (Int_t i=0;i<n;i++) {
156 char *first = (char*)list->UncheckedAt(i);
157 Float_t *ff = (Float_t*)&first[fOffset];
158 for (Int_t j=0;j<fLen;j++) {
159 ff[j] = value[j];
160 }
161 value += fLen;
162 }
163}
164
165////////////////////////////////////////////////////////////////////////////////
166/// Read a float from std::istream s and store it into the branch buffer.
167
168void TLeafF::ReadValue(std::istream &s, Char_t /*delim = ' '*/)
169{
170 Float_t *value = (Float_t*)GetValuePointer();
171 for (Int_t i=0;i<fLen;i++) s >> value[i];
172}
173
174////////////////////////////////////////////////////////////////////////////////
175/// Set leaf buffer data address.
176
177void TLeafF::SetAddress(void *add)
178{
179 if (ResetAddress(add) && (add!= fValue)) {
180 delete [] fValue;
181 }
182
183 if (add) {
185 fPointer = (Float_t**) add;
186 Int_t ncountmax = fLen;
187 if (fLeafCount) ncountmax = fLen*(fLeafCount->GetMaximum() + 1);
188 if ((fLeafCount && ncountmax > Int_t(fLeafCount->GetValue())) ||
189 ncountmax > fNdata || *fPointer == 0) {
190 if (*fPointer) delete [] *fPointer;
191 if (ncountmax > fNdata) fNdata = ncountmax;
192 *fPointer = new Float_t[fNdata];
193 }
194 fValue = *fPointer;
195 } else {
196 fValue = (Float_t*)add;
197 }
198 } else {
199 fValue = new Float_t[fNdata];
200 fValue[0] = 0;
201 }
202}
#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
long long Long64_t
Definition: RtypesCore.h:80
float Float_t
Definition: RtypesCore.h:57
const Bool_t kTRUE
Definition: RtypesCore.h:100
#define ClassImp(name)
Definition: Rtypes.h:364
@ kFloat_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 32 bit floating point data type.
Definition: TLeafF.h:26
virtual void ReadBasket(TBuffer &b)
Read leaf elements from Basket input buffer.
Definition: TLeafF.cxx:113
Float_t fMaximum
Maximum value if leaf range is specified.
Definition: TLeafF.h:30
virtual void FillBasket(TBuffer &b)
Pack leaf elements in Basket output buffer.
Definition: TLeafF.cxx:78
virtual bool ReadBasketFast(TBuffer &, Long64_t)
Definition: TLeafF.cxx:137
virtual void PrintValue(Int_t i=0) const
Prints leaf value.
Definition: TLeafF.cxx:104
Float_t fMinimum
Minimum value if leaf range is specified.
Definition: TLeafF.h:29
virtual void SetAddress(void *add=0)
Set leaf buffer data address.
Definition: TLeafF.cxx:177
virtual ~TLeafF()
Default destructor for a LeafF.
Definition: TLeafF.cxx:54
TLeafF()
Default constructor for LeafF.
Definition: TLeafF.cxx:29
virtual void ReadBasketExport(TBuffer &b, TClonesArray *list, Int_t n)
Read leaf elements from Basket input buffer and export buffer to TClonesArray objects.
Definition: TLeafF.cxx:146
Float_t * fValue
! Pointer to data buffer
Definition: TLeafF.h:31
virtual void Import(TClonesArray *list, Int_t n)
Import element from ClonesArray into local leaf buffer.
Definition: TLeafF.cxx:88
virtual void Export(TClonesArray *list, Int_t n)
Export element from local leaf buffer to ClonesArray.
Definition: TLeafF.cxx:62
virtual void ReadValue(std::istream &s, Char_t delim=' ')
Read a float from std::istream s and store it into the branch buffer.
Definition: TLeafF.cxx:168
Float_t ** fPointer
! Address of pointer to data buffer!
Definition: TLeafF.h:32
virtual void * GetValuePointer() const
Definition: TLeafF.h:44
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
Definition: first.py:1
auto * l
Definition: textangle.C:4