/* read_float(nds_socket_type fd, float*)
*
* read a float from the indicated fd and swap bytes from network
* byte ordering (big-endian) to host byte ordering.
*/
int
read_float(nds_socket_type fd, float* data) {
union {uint32_t i; float f;} d;
if (read_uint4(fd, &d.i)) return DAQD_ERROR;
*data = d.f;
return DAQD_OK;
}
/*
* Read an NDS2 byte-counted string from the specified fd. The string is
* transferred as an integer byte-count followed by text.
*/
int
_daq_read_string(nds_socket_type fd, size_t maxlen, char* buf) {
int rc;
uint4_type tmp = 0;
size_t len;
if (read_uint4(fd, &tmp)) return -1;
len = tmp;
if (len == 0) {
if (maxlen && buf) *buf = 0;
return (int)len;
}
if (len > maxlen) rc = read_bytes(fd, buf, maxlen);
else rc = read_bytes(fd, buf, len);
if (rc < 0) return -1;
if ((size_t)rc < maxlen) buf[rc] = 0;
return (int)len;
}
int32_t read_sint4()
{
return static_cast<int32_t>(read_uint4());
}
