src/complex/misc/cl_N_as.cc

   1 // as_cl_N().
   2
   3 // General includes.
   4 #include "cl_sysdep.h"
   5
   6 // Specification.
   7 #include "cl_complex.h"
   8
   9
  10 // Implementation.
  11
  12 #include "cl_N.h"
  13
  14 // Cf. cl_N_p in cl_C_ring.cc.
  15 // But here, for better inlining in g++, it is preferrable to finish every
  16 // alternative with either "return cl_true;" or "return cl_false;".
  17
  18 inline cl_boolean cl_N_p (const cl_number& x)
  19 {
  20         if (!x.pointer_p())
  21                 switch (x.nonpointer_tag()) {
  22                 case cl_FN_tag:
  23                 case cl_SF_tag:
  24                 #if defined(CL_WIDE_POINTERS)
  25                 case cl_FF_tag:
  26                 #endif
  27                         return cl_true;
  28                 }
  29         else
  30                 if (x.pointer_type()->flags & cl_class_flags_subclass_complex)
  31                         return cl_true;
  32         return cl_false;
  33 }
  34
  35 const cl_N& as_cl_N (const cl_number& x, const char * filename, int line)
  36 {
  37         if (cl_N_p(x)) {
  38                 DeclareType(cl_N,x);
  39                 return x;
  40         } else
  41                 cl_as_error(x,"a number",filename,line);
  42 }