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#include "VPICDefinition.h"
#include <stdio.h> // fread
/////////////////////////////////////////////////////////////////////////
//
// Read in the requested number of characters
//
/////////////////////////////////////////////////////////////////////////
string readString(FILE* filePtr, int size)
{
char* buffer = new char[size + 1];
fread(buffer, sizeof(char), size, filePtr);
buffer[size] = '\0';
// Make sure string has legal values
if (isalnum(buffer[0]) == 0)
buffer[0] = '\0';
for (int i = 1; i < size; i++)
if (isprint(buffer[i]) == 0)
buffer[i] = '\0';
string retString = buffer;
delete [] buffer;
return retString;
}
/////////////////////////////////////////////////////////////////////////
//
// Read in the number of items from the file pointer and
// byte swap if necessary
//
/////////////////////////////////////////////////////////////////////////
void readData(
bool littleEndian,
unsigned short* data,
unsigned long dataSize,
unsigned long dataCount,
FILE* fp)
{
// Read all the data from the file
fread(data, dataSize, dataCount, fp);
if (littleEndian != true) {
// Byte swap each integer
char* dataPtr = (char*) data;
char temp;
for (unsigned long item = 0; item < dataCount; item++) {
// Do a byte-by-byte swap, reversing the order.
for (unsigned long i = 0; i < dataSize / 2; i++) {
temp = dataPtr[i];
dataPtr[i] = dataPtr[dataSize - 1 - i];
dataPtr[dataSize - 1 - i] = temp;
}
dataPtr += WORDSIZE;
}
}
}
/////////////////////////////////////////////////////////////////////////
//
// Read in the number of items from the file pointer and
// byte swap if necessary
//
/////////////////////////////////////////////////////////////////////////
void readData(
bool littleEndian,
int* data,
unsigned long dataSize,
unsigned long dataCount,
FILE* fp)
{
// Read all the data from the file
fread(data, dataSize, dataCount, fp);
if (littleEndian != true) {
// Byte swap each integer
char* dataPtr = (char*) data;
char temp;
for (unsigned long item = 0; item < dataCount; item++) {
// Do a byte-by-byte swap, reversing the order.
for (unsigned long i = 0; i < dataSize / 2; i++) {
temp = dataPtr[i];
dataPtr[i] = dataPtr[dataSize - 1 - i];
dataPtr[dataSize - 1 - i] = temp;
}
dataPtr += WORDSIZE;
}
}
}
/////////////////////////////////////////////////////////////////////////
//
// Read in the number of items from the file pointer and
// byte swap if necessary
//
/////////////////////////////////////////////////////////////////////////
void readData(
bool littleEndian,
float* data,
unsigned long dataSize,
unsigned long dataCount,
FILE* fp)
{
// Read all the data from the file
fread(data, dataSize, dataCount, fp);
if (littleEndian != true) {
// Byte swap each float
char* dataPtr = (char*) data;
char temp;
for (unsigned long item = 0; item < dataCount; item++) {
// Do a byte-by-byte swap, reversing the order.
for (unsigned long i = 0; i < dataSize / 2; i++) {
temp = dataPtr[i];
dataPtr[i] = dataPtr[dataSize - 1 - i];
dataPtr[dataSize - 1 - i] = temp;
}
dataPtr += WORDSIZE;
}
}
}
/////////////////////////////////////////////////////////////////////////
//
// Read in the number of items from the file pointer and
// byte swap if necessary
//
/////////////////////////////////////////////////////////////////////////
void readData(
bool littleEndian,
double* data,
unsigned long dataSize,
unsigned long dataCount,
FILE* fp)
{
// Read all the data from the file
fread(data, dataSize, dataCount, fp);
if (littleEndian != true) {
// Byte swap each float
char* dataPtr = (char*) data;
char temp;
for (unsigned long item = 0; item < dataCount; item++) {
// Do a byte-by-byte swap, reversing the order.
for (unsigned long i = 0; i < dataSize / 2; i++) {
temp = dataPtr[i];
dataPtr[i] = dataPtr[dataSize - 1 - i];
dataPtr[dataSize - 1 - i] = temp;
}
dataPtr += WORDSIZE;
}
}
}
//////////////////////////////////////////////////////////////////////////////
//
// Greatest common divisor
//
//////////////////////////////////////////////////////////////////////////////
int GCD(int a, int b)
{
if (b == 0)
return a;
else
return GCD(b, a % b);
}
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