src/float/ffloat/misc/cl_FF_as.cc

   1 // cl_FF_As().
   2
   3 // General includes.
   4 #include "base/cl_sysdep.h"
   5
   6 // Specification.
   7 #include "cln/ffloat.h"
   8
   9
  10 // Implementation.
  11
  12 #include "base/cl_N.h"
  13
  14 namespace cln {
  15
  16 inline bool cl_FF_p (const cl_number& x)
  17 {
  18 #if defined(CL_WIDE_POINTERS)
  19         if (!x.pointer_p())
  20                 if (cl_tag((x).word) == cl_FF_tag)
  21                         return true;
  22 #else
  23         if (x.pointer_p())
  24                 if (x.heappointer->type == &cl_class_ffloat)
  25                         return true;
  26 #endif
  27         return false;
  28 }
  29
  30 const cl_FF& cl_FF_As (const cl_number& x, const char * filename, int line)
  31 {
  32         if (cl_FF_p(x)) {
  33                 DeclareType(cl_FF,x);
  34                 return x;
  35         } else
  36                 throw as_exception(x,"a single-float number",filename,line);
  37 }
  38
  39 }  // namespace cln