// @(#)root/cont:$Name: $:$Id: TArrayF.cxx,v 1.14 2005/11/16 20:07:50 pcanal Exp $ // Author: Rene Brun 06/03/95 /************************************************************************* * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. * * All rights reserved. * * * * For the licensing terms see $ROOTSYS/LICENSE. * * For the list of contributors see $ROOTSYS/README/CREDITS. * *************************************************************************/ ////////////////////////////////////////////////////////////////////////// // // // TArrayF // // // // Array of floats (32 bits per element). // // // ////////////////////////////////////////////////////////////////////////// #include "TArrayF.h" #include "TBuffer.h" ClassImp(TArrayF) //______________________________________________________________________________ TArrayF::TArrayF() { // Default TArrayF ctor. fArray = 0; } //______________________________________________________________________________ TArrayF::TArrayF(Int_t n) { // Create TArrayF object and set array size to n floats. fArray = 0; if (n > 0) Set(n); } //______________________________________________________________________________ TArrayF::TArrayF(Int_t n, const Float_t *array) { // Create TArrayF object and initialize it with values of array. fArray = 0; Set(n, array); } //______________________________________________________________________________ TArrayF::TArrayF(const TArrayF &array) : TArray(array) { // Copy constructor. fArray = 0; Set(array.fN, array.fArray); } //______________________________________________________________________________ TArrayF &TArrayF::operator=(const TArrayF &rhs) { // TArrayF assignment operator. if (this != &rhs) Set(rhs.fN, rhs.fArray); return *this; } //______________________________________________________________________________ TArrayF::~TArrayF() { // Delete TArrayF object. delete [] fArray; fArray = 0; } //______________________________________________________________________________ void TArrayF::Adopt(Int_t n, Float_t *arr) { // Adopt array arr into TArrayF, i.e. don't copy arr but use it directly // in TArrayF. User may not delete arr, TArrayF dtor will do it. if (fArray) delete [] fArray; fN = n; fArray = arr; } //______________________________________________________________________________ void TArrayF::AddAt(Float_t c, Int_t i) { // Add float c at position i. Check for out of bounds. if (!BoundsOk("TArrayF::AddAt", i)) return; fArray[i] = c; } //______________________________________________________________________________ void TArrayF::Set(Int_t n) { // Set size of this array to n floats. // A new array is created, the old contents copied to the new array, // then the old array is deleted. // This function should not be called if the array was declared via Adopt. if (n < 0) return; if (n != fN) { Float_t *temp = fArray; if (n != 0) { fArray = new Float_t[n]; if (n < fN) memcpy(fArray,temp, n*sizeof(Float_t)); else { memcpy(fArray,temp,fN*sizeof(Float_t)); memset(&fArray[fN],0,(n-fN)*sizeof(Float_t)); } } else { fArray = 0; } if (fN) delete [] temp; fN = n; } } //______________________________________________________________________________ void TArrayF::Set(Int_t n, const Float_t *array) { // Set size of this array to n floats and set the contents. // This function should not be called if the array was declared via Adopt. if (fArray && fN != n) { delete [] fArray; fArray = 0; } fN = n; if (fN == 0) return; if (array == 0) return; if (!fArray) fArray = new Float_t[fN]; memcpy(fArray,array, n*sizeof(Float_t)); } //_______________________________________________________________________ void TArrayF::Streamer(TBuffer &b) { // Stream a TArrayF object. if (b.IsReading()) { Int_t n; b >> n; Set(n); b.ReadFastArray(fArray,n); } else { b << fN; b.WriteFastArray(fArray, fN); } }