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TArrayF.cxx
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1// @(#)root/cont:$Id$
2// Author: Rene Brun 06/03/95
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 TArrayF
13\ingroup Containers
14Array of floats (32 bits per element).
15*/
16
17#include "TArrayF.h"
18#include "TBuffer.h"
19
20
22
23////////////////////////////////////////////////////////////////////////////////
24/// Default TArrayF ctor.
25
27{
28 fArray = 0;
29}
30
31////////////////////////////////////////////////////////////////////////////////
32/// Create TArrayF object and set array size to n floats.
33
35{
36 fArray = 0;
37 if (n > 0) Set(n);
38}
39
40////////////////////////////////////////////////////////////////////////////////
41/// Create TArrayF object and initialize it with values of array.
42
44{
45 fArray = 0;
46 Set(n, array);
47}
48
49////////////////////////////////////////////////////////////////////////////////
50/// Copy constructor.
51
52TArrayF::TArrayF(const TArrayF &array) : TArray(array)
53{
54 fArray = 0;
55 Set(array.fN, array.fArray);
56}
57
58////////////////////////////////////////////////////////////////////////////////
59/// TArrayF assignment operator.
60
62{
63 if (this != &rhs)
64 Set(rhs.fN, rhs.fArray);
65 return *this;
66}
67
68////////////////////////////////////////////////////////////////////////////////
69/// Delete TArrayF object.
70
72{
73 delete [] fArray;
74 fArray = 0;
75}
76
77////////////////////////////////////////////////////////////////////////////////
78/// Adopt array arr into TArrayF, i.e. don't copy arr but use it directly
79/// in TArrayF. User may not delete arr, TArrayF dtor will do it.
80
82{
83 if (fArray)
84 delete [] fArray;
85
86 fN = n;
87 fArray = arr;
88}
89
90////////////////////////////////////////////////////////////////////////////////
91/// Add float c at position i. Check for out of bounds.
92
94{
95 if (!BoundsOk("TArrayF::AddAt", i)) return;
96 fArray[i] = c;
97}
98
99////////////////////////////////////////////////////////////////////////////////
100/// Set size of this array to n floats.
101/// A new array is created, the old contents copied to the new array,
102/// then the old array is deleted.
103/// This function should not be called if the array was declared via Adopt.
104
106{
107 if (n < 0) return;
108 if (n != fN) {
109 Float_t *temp = fArray;
110 if (n != 0) {
111 fArray = new Float_t[n];
112 if (n < fN) memcpy(fArray,temp, n*sizeof(Float_t));
113 else {
114 memcpy(fArray,temp,fN*sizeof(Float_t));
115 memset(&fArray[fN],0,(n-fN)*sizeof(Float_t));
116 }
117 } else {
118 fArray = 0;
119 }
120 if (fN) delete [] temp;
121 fN = n;
122 }
123}
124
125////////////////////////////////////////////////////////////////////////////////
126/// Set size of this array to n floats and set the contents.
127/// This function should not be called if the array was declared via Adopt.
128
129void TArrayF::Set(Int_t n, const Float_t *array)
130{
131 if (fArray && fN != n) {
132 delete [] fArray;
133 fArray = 0;
134 }
135 fN = n;
136 if (fN == 0) return;
137 if (array == 0) return;
138 if (!fArray) fArray = new Float_t[fN];
139 memmove(fArray, array, n*sizeof(Float_t));
140}
141
142////////////////////////////////////////////////////////////////////////////////
143/// Stream a TArrayF object.
144
145void TArrayF::Streamer(TBuffer &b)
146{
147 if (b.IsReading()) {
148 Int_t n;
149 b >> n;
150 Set(n);
151 b.ReadFastArray(fArray,n);
152 } else {
153 b << fN;
154 b.WriteFastArray(fArray, fN);
155 }
156}
157
int Int_t
Definition: CPyCppyy.h:43
#define b(i)
Definition: RSha256.hxx:100
#define c(i)
Definition: RSha256.hxx:101
float Float_t
Definition: RtypesCore.h:55
#define ClassImp(name)
Definition: Rtypes.h:361
Array of floats (32 bits per element).
Definition: TArrayF.h:27
Float_t * fArray
Definition: TArrayF.h:30
TArrayF & operator=(const TArrayF &rhs)
TArrayF assignment operator.
Definition: TArrayF.cxx:61
virtual ~TArrayF()
Delete TArrayF object.
Definition: TArrayF.cxx:71
void Adopt(Int_t n, Float_t *array)
Adopt array arr into TArrayF, i.e.
Definition: TArrayF.cxx:81
void Set(Int_t n)
Set size of this array to n floats.
Definition: TArrayF.cxx:105
void AddAt(Float_t c, Int_t i)
Add float c at position i. Check for out of bounds.
Definition: TArrayF.cxx:93
TArrayF()
Default TArrayF ctor.
Definition: TArrayF.cxx:26
Abstract array base class.
Definition: TArray.h:31
Int_t fN
Definition: TArray.h:38
Bool_t BoundsOk(const char *where, Int_t at) const
Definition: TArray.h:77
Buffer base class used for serializing objects.
Definition: TBuffer.h:42
const Int_t n
Definition: legend1.C:16