/[GiNaC]/ginac/numeric.h
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revision 1.4 by cbauer, Tue Nov 16 16:35:26 1999 UTC revision 1.5 by cbauer, Wed Nov 17 16:58:00 1999 UTC
# Line 25  Line 25 
25    
26  #include <strstream>  #include <strstream>
27  #include <ginac/basic.h>  #include <ginac/basic.h>
28    #include <ginac/ex.h>
 #define HASHVALUE_NUMERIC 0x80000001U  
29    
30  class cl_N;     // We want to include cln.h only in numeric.cpp in order to  class cl_N;     // We want to include cln.h only in numeric.cpp in order to
31                  // avoid namespace pollution and keep compile-time low.                  // avoid namespace pollution and keep compile-time low.
32    
33    namespace GiNaC {
34    
35    #define HASHVALUE_NUMERIC 0x80000001U
36    
37  /** This class is used to instantiate a global object Digits which  /** This class is used to instantiate a global object Digits which
38   *  behaves just like Maple's Digits.  We need an object rather than a   *  behaves just like Maple's Digits.  We need an object rather than a
39   *  dumber basic type since as a side-effect we let it change   *  dumber basic type since as a side-effect we let it change
# Line 318  ex PiEvalf(void); Line 321  ex PiEvalf(void);
321  ex EulerGammaEvalf(void);  ex EulerGammaEvalf(void);
322  ex CatalanEvalf(void);  ex CatalanEvalf(void);
323    
324  #define ex_to_numeric(X) static_cast<numeric const &>(*(X).bp)  // utility functions
325    inline const numeric &ex_to_numeric(const ex &e)
326    {
327            return static_cast<const numeric &>(*e.bp);
328    }
329    
330    } // namespace GiNaC
331    
332  #endif // ndef __GINAC_NUMERIC_H__  #endif // ndef __GINAC_NUMERIC_H__
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