Floating Point Filters

The XDR library also provides primitive routines for C floating point types:

bool_t xdr_float(xdrs, fp)
  	XDR *xdrs;
  	float *fp;
bool_t xdr_double(xdrs, dp)
  	XDR *xdrs;
  	double *dp;

The first parameter, xdrs is an XDR stream handle. The second parameter is the address of the floating point number that provides data to the stream or receives data from it. Both routines return TRUE if they complete successfully, and FALSE otherwise.

Since the numbers are represented in IEEE floating point, routines may fail when decoding a valid IEEE representation into a machine-specific representation, or vice versa.