copy struct to buffer
int fillDataBuffer(struct data d, char *buffer, int len)
{
int i, j = 0;
for (i = sizeof(d.num1) - 1; i >= 0 && j < len; i--, j++) {
buffer[j] = (char) (d.num1 >> i);
}
for (i = sizeof(d.num2) - 1; i >= 0 && j < len; i--, j++) {
buffer[j] = (char) (d.num2 >> i);
}
for (i = sizeof(d.num3) - 1; i >= 0 && j < len; i--, j++) {
buffer[j] = (char) (d.num3 >> i);
}
for (i = sizeof(d.num4) - 1; i >= 0 && j < len; i--, j++) {
buffer[j] = (char) (d.num4 >> i);
}
if (j >= len) {
/* Error! The buffer wasn't big enough. */
return 0;
} else {
return 1;
}
}