C++ readArray函数代码示例

IpxAddress PacketReader::readIpxAddress() {
    IpxAddress temp = IpxAddress();
    readArray(temp.network, 4);
    readArray(temp.node, 6);
    readArray(temp.socket, 2);
    return temp;
}

asynStatus isisdaeDriver::readInt32Array(asynUser *pasynUser, epicsInt32 *value, size_t nElements, size_t *nIn)
{
    asynStatus stat = readArray(pasynUser, "readInt32Array", value, nElements, nIn);
	callParamCallbacks(); // this flushes P_ErrMsgs
	doCallbacksInt32Array(value, *nIn, pasynUser->reason, 0);
    return stat;
}

	inline StringArray readStringArray(std::istream& istrm)
	{
		BinarySerialization::verifySignature(istrm, BINSIG_STRARRAY);
		StringArray stra;
		readArray(istrm, stra);
		return stra;
	}

/* get the SA of text
 * if filename is given search if the SA is already computed
 */
unsigned int* getSA(unsigned char const* text, int length, const char* filename){
    char filename_temp[] = "stdin";
    char filename_sa[1024];
    unsigned int* sa;
    if(filename == NULL)
        filename = filename_temp;
    /*filename = basename(filename);*/ /*not sure about this*/
    snprintf(filename_sa,1024,"%s.sa",filename);
    /* checks if we already computed the SA*/
    if(access(filename_sa, R_OK)!=0 || strcmp(filename,"stdin") == 0 || strcmp(filename, "stdin.rev") == 0){
        sa = new unsigned int[length];
        unsigned int err = divsufsort(text, (saidx_t*)sa, (saidx_t)length);
        if(err){
            fprintf(stderr, "ERROR: SA: constructing the SA\n");
        }
        err = saveArray((unsigned char*)sa, length * sizeof(unsigned int), filename_sa);
        if(err != 0){
            fprintf(stderr,"ERROR: SA: saving the SA\n");
        }        
    }else{
        unsigned int salen;
        sa = (unsigned int*)readArray(filename_sa, &salen, sizeof(unsigned int));
    }
    return sa;
}

QList<segment_command_64> MACHFile::getSegmentsList64()
{
    QList<load_command_offset> list=getLoadCommands_offset();
    unsigned int nOffset=0;

    QList<segment_command_64> listResult;

    segment_command_64 record;

    for(int i=0; i<list.count(); i++)
    {
        if(list.at(i).cmd==LC_SEGMENT_64)
        {
            nOffset=list.at(i).offset;


            record.cmd=readDword(nOffset+offsetof(segment_command_64,cmd),isReverse());
            record.cmdsize=readDword(nOffset+offsetof(segment_command_64,cmdsize),isReverse());
            readArray(nOffset+offsetof(segment_command_64,segname),record.segname,16);
            record.vmaddr=readQword(nOffset+offsetof(segment_command_64,vmaddr),isReverse());
            record.vmsize=readQword(nOffset+offsetof(segment_command_64,vmsize),isReverse());
            record.fileoff=readQword(nOffset+offsetof(segment_command_64,fileoff),isReverse());
            record.filesize=readQword(nOffset+offsetof(segment_command_64,filesize),isReverse());
            record.maxprot=readDword(nOffset+offsetof(segment_command_64,maxprot),isReverse());
            record.initprot=readDword(nOffset+offsetof(segment_command_64,initprot),isReverse());
            record.nsects=readDword(nOffset+offsetof(segment_command_64,nsects),isReverse());
            record.flags=readDword(nOffset+offsetof(segment_command_64,flags),isReverse());

            listResult.append(record);
        }
    }

    return listResult;
}

void SF2Reader::readList(SimpleArray<T, E>& a, const chunkHeader& h) {
    size_t n = h.chunkSize;
    if(n%sizeof(T)!=0)
        throw ReadError("list "+std::string(h.chunkId, 4)+" not a multiple of record size");
    Assert(n/sizeof(T)>=E);
    a.resize(n/sizeof(T)-E);
    readArray(a.begin(), a.size()+E);
}

int main(void) {
	int list[MAX_SIZE], size;

	size = readArray(list);
	printArray(list, size);

	printf("Sum = %d\n", sumArray(list, size));

	return 0;
}

int main(int argc, char * argv[])
{
    int  howMany;
    double localSum, finalSum;
    double * masterArray;

    double t1, t2;

    /* MPI Initialization */
    int numProc = -1;
    int id = -1;

    MPI_Init(&argc, &argv);
    MPI_Comm_size(MPI_COMM_WORLD, &numProc);
    MPI_Comm_rank(MPI_COMM_WORLD, &id);

    if (argc != 2) {
        fprintf(stderr, "\n*** Usage: arraySum <inputFile>\n\n");
        exit(1);
    }
    
    t1 = MPI_Wtime();

    /* Master */
    if (id == 0) {
        // Read the array into memory
        readArray(argv[1], &masterArray, &howMany); 

        if (debug) {
            printf("Master has read the array of size %d\n\n", howMany);
        }

        // Wait until the array has been read before we do anything
        MPI_Bcast(&howMany, 1, MPI_DOUBLE, 0, MPI_COMM_WORLD);
    }
    /* Worker */
    else {
        // Need our workers to be patient
        MPI_Bcast(&howMany, 1, MPI_DOUBLE, 0, MPI_COMM_WORLD);
    }
    
    finalSum = parallelSumArray(masterArray, howMany, id, numProc);

    t2 = MPI_Wtime();

    if (id == 0) {
        printf("\nThe sum of the values in the input file '%s' is %g\n",
                argv[1], finalSum);
        printf("It took '%g' seconds to compute \n", t2 - t1);
    }

    MPI_Finalize();
    
    return 0;
}

/**
    Loads initial configuration at process 0 and sends it to other processes
*/
void setupArrays(const char* configFile, ARRAY2D arrays[2], int* pUpper, int* pLower) {
    int lengthWidth[2] = {0};
    int size, rank;

    // get the size process group and the rank of this process
    MPI_Comm_size(MPI_COMM_WORLD, &size);
    MPI_Comm_rank(MPI_COMM_WORLD, &rank);

    // load initial configuration at process 0
    if(rank == 0) {
        arrays[0] = readArray(configFile);
        arrays[1] = newArray(arrays[0].length, arrays[0].width);
        // check the size and number of processes - we currently only support even decompositions
        if(arrays[0].length % size != 0) {
            // TODO: used MPI_Scatterv and MPI_Gatherv to support uneven decompositions
            printf("This program does not support uneven decompositions. The number of rows (%d) \n"
                   "should be divisible by the number of processes (%d)\n", arrays[0].length, size);
            MPI_Abort(MPI_COMM_WORLD, -1);
        }
        lengthWidth[0] = arrays[0].length;
        lengthWidth[1] = arrays[0].width;
    }

    // broadcast the size of the array to everyone
    MPI_Bcast(lengthWidth, 2, MPI_INT, 0, MPI_COMM_WORLD);

    // non root nodes must allocate buffer space
    if(rank != 0) {
        arrays[0] = newArray(lengthWidth[0], lengthWidth[1]);
        arrays[1] = newArray(lengthWidth[0], lengthWidth[1]);
    }

    // calculate bounds
    *pLower = rowsLowerBound(arrays[0].length, size, rank);
    *pUpper = rowsUpperBound(arrays[0].length, size, rank);

    // if running on more than one process
    if(size > 1) {
        // TODO: requires an even size decomposition
        // send configuration to each process
        /*MPI_Scatter(
                arrays[0].data, (*pUpper-*pLower)*arrays[0].width, MPI_CHAR,
                ARRAY2D_PTR(arrays[0],*pLower,0), (*pUpper-*pLower)*arrays[0].width, MPI_CHAR,
                0, MPI_COMM_WORLD);*/
        // each process needs not only its own chunk, but also the row above and
        // below it, so the simple MPI_Scatter call is insufficient
        // Broadcasting the entire config is an inefficient solution, but it's
        // also simple
        MPI_Bcast(arrays[0].data, arrays[0].length*arrays[0].width, MPI_CHAR, 0, MPI_COMM_WORLD);

    }

}

void ScummEngine_v71he::o71_getCharIndexInString() {
	int array, end, len, pos, value;

	value = pop();
	end = pop();
	pos = pop();
	array = pop();

	if (end >= 0) {
		len = resStrLen(getStringAddress(array));
		if (len < end)
			end = len;
	} else {
		end = 0;
	}

	if (pos < 0)
		pos = 0;

	writeVar(0, array);
	if (end > pos) {
		while (end >= pos) {
			if (readArray(0, 0, pos) == value) {
				push(pos);
				return;
			}
			pos++;
		}
	} else {
		while (end <= pos) {
			if (readArray(0, 0, pos) == value) {
				push(pos);
				return;
			}
			pos--;
		}
	}

	push(-1);
}

int load_representation (void **representation, char *basename){
	char basenametext[2048]; sprintf(basenametext,"%s.%s",basename,"lztext");

    char fn_doclen[2048];
    snprintf(fn_doclen,2048,"%s.doclen",basenametext);
    lzdoc* repr = (lzdoc*)malloc(sizeof(lzdoc));
    unsigned int* doc_len = (unsigned int*)readArray(fn_doclen,(int*)(&(repr->docs)),sizeof(unsigned int));
    repr->doc_array = new DeltaCodes(doc_len,repr->docs, DELTA_SAMPLING);
    free(doc_len);
    repr->extractor = new ExtractorEnd2(basenametext, DELTA_SAMPLING);
    *representation = repr;
    return 0;
}

int main() {
  std::vector<int> data = readArray();
  printArray("Input", data);

  //ISort* sortAlgorithm = new InsertionSort();
  ISort* sortAlgorithm = new Quicksort();
  sortAlgorithm->sort(data);

  printArray("Output with " + sortAlgorithm->name(), data);

  delete sortAlgorithm;
  return 0;
}

void SF2Reader::readPdtaList() {
    chunkHeader pdtaList;
    read(pdtaList);
    char pdtaHeader[4];
    readArray(pdtaHeader,4);
    size_t n = pdtaList.chunkSize-4;
    Assert(sizeof(SF2Bank::Rec_bag)==4);
    Assert(sizeof(SF2Bank::Rec_gen)==4);
    Assert(sizeof(SF2Bank::Rec_mod)==10);
    while(n>0) {
        if( n<sizeof(chunkHeader) )
            throw ReadError("pdta-list corrupted");
        chunkHeader item;
        read(item);
        switch(item.id()) {
            case ChunkId::phdr:
                readList(myBank->phdr,item);
                break;
            case ChunkId::pbag:
                readList(myBank->p.bag,item);
                break;
            case ChunkId::pmod:
                readList(myBank->p.mod,item);
                break;
            case ChunkId::pgen:
                readList(myBank->p.gen,item);
                break;     
            case ChunkId::inst:
                readList(myBank->inst,item);
                break;
            case ChunkId::ibag:
                readList(myBank->i.bag,item);
                break;
            case ChunkId::imod:
                readList(myBank->i.mod,item);
                break;
            case ChunkId::igen:
                readList(myBank->i.gen,item);
                break;            
            case ChunkId::shdr: 
                readList(myBank->shdr,item);
                break;
            default:
                Assert(0);
                skip(item.chunkSize);
                break;
        }
        n -= 8 + item.chunkSize;
    }
}

bool
Reader::readValue()
{
   Token token;
   skipCommentTokens( token );
   bool successful = true;

   if ( collectComments_  &&  !commentsBefore_.empty() )
   {
      currentValue().setComment( commentsBefore_, commentBefore );
      commentsBefore_ = "";
   }


   switch ( token.type_ )
   {
   case tokenObjectBegin:
      successful = readObject( token );
      break;
   case tokenArrayBegin:
      successful = readArray( token );
      break;
   case tokenNumber:
      successful = decodeNumber( token );
      break;
   case tokenString:
      successful = decodeString( token );
      break;
   case tokenTrue:
      currentValue() = true;
      break;
   case tokenFalse:
      currentValue() = false;
      break;
   case tokenNull:
      currentValue() = Value();
      break;
   default:
      return addError( "Syntax error: value, object or array expected.", token );
   }

   if ( collectComments_ )
   {
      lastValueEnd_ = current_;
      lastValue_ = &currentValue();
   }

   return successful;
}

int main ( int argc, char * argv[] ) {

    int size = 0;
    scanf("%d", &size);
    int * myReturn = readArray( size );    
    int i;
    printf( "myReturn begin: %p\n", myReturn );
    for ( i = 0; i < size; i++ ) { 
        printf( " element %d = %d\n", i , *myReturn );
        myReturn ++;
    }
    printf( "myReturn end: %p\n", myReturn );
    printf( "myReturn reset: %p\n", myReturn - size );
    return EXIT_SUCCESS;
}