pr_input_remaining
extern int pr_input_remaining(pr_context_t *context, size_t size);
while ((retstat == 0) && pr_input_remaining(context, 1)) {
if (!pr_input_remaining(context, (sizeof (int32_t) * count))) {
if (!pr_input_remaining(context, (sizeof (int64_t) * count))) {
if (!pr_input_remaining(context, (sizeof (char) * count))) {
if (!pr_input_remaining(context, (sizeof (short) * count))) {