- changed function::diff() to be more tolerant by checking first if the

[ginac.git] / ginac / numeric.h

diff --git a/ginac/numeric.h b/ginac/numeric.h
index 01e2ad60677aeef26b725a9fd0aaa787d17fc186..13c790fc6a754e2f939d8e4d6e2c47efc57fc1aa 100644 (file)
--- a/ginac/numeric.h
+++ b/ginac/numeric.h
@@ -25,12 +25,15 @@
 
 #include <strstream>
 #include <ginac/basic.h>
-
-#define HASHVALUE_NUMERIC 0x80000001U
+#include <ginac/ex.h>
 
 class cl_N;     // We want to include cln.h only in numeric.cpp in order to 
                 // avoid namespace pollution and keep compile-time low.
 
+namespace GiNaC {
+
+#define HASHVALUE_NUMERIC 0x80000001U
+
 /** This class is used to instantiate a global object Digits which
  *  behaves just like Maple's Digits.  We need an object rather than a
  *  dumber basic type since as a side-effect we let it change
@@ -74,6 +77,7 @@ class numeric : public basic
     friend numeric asinh(numeric const & x);
     friend numeric acosh(numeric const & x);
     friend numeric atanh(numeric const & x);
+    friend numeric bernoulli(numeric const & n);
     friend numeric abs(numeric const & x);
     friend numeric mod(numeric const & a, numeric const & b);
     friend numeric smod(numeric const & a, numeric const & b);
@@ -167,6 +171,7 @@ public:
     numeric power_dyn(numeric const & other) const { return power(other); }
     */
     numeric inverse(void) const;
+    int csgn(void) const;
     int compare(numeric const & other) const;
     bool is_equal(numeric const & other) const;
     bool is_zero(void) const;
@@ -234,10 +239,14 @@ numeric tanh(numeric const & x);
 numeric asinh(numeric const & x);
 numeric acosh(numeric const & x);
 numeric atanh(numeric const & x);
+numeric zeta(numeric const & x);
 numeric gamma(numeric const & x);
+numeric psi(numeric const & x);
+numeric psi(numeric const & n, numeric const & x);
 numeric factorial(numeric const & n);
 numeric doublefactorial(numeric const & n);
 numeric binomial(numeric const & n, numeric const & k);
+numeric bernoulli(numeric const & n);
 
 numeric abs(numeric const & x);
 numeric mod(numeric const & a, numeric const & b);
@@ -263,6 +272,9 @@ struct numeric_fail
 inline numeric inverse(numeric const & x)
 { return x.inverse(); }
 
+inline bool csgn(numeric const & x)
+{ return x.csgn(); }
+
 inline bool is_zero(numeric const & x)
 { return x.is_zero(); }
 
@@ -305,20 +317,17 @@ inline numeric numer(numeric const & x)
 inline numeric denom(numeric const & x)
 { return x.denom(); }
 
-/* do we need this any more? */
-//inline numeric factorial(int n)
-//{ return factorial(numeric(n)); }
-
-/* do we need this any more? */
-//inline numeric binomial(int n, int k)
-//{ return binomial(numeric(n), numeric(k)); }
-
 ex IEvalf(void);
 ex PiEvalf(void);
 ex EulerGammaEvalf(void);
 ex CatalanEvalf(void);
 
-#define ex_to_numeric(X) static_cast<numeric const &>(*(X).bp)
+// utility functions
+inline const numeric &ex_to_numeric(const ex &e)
+{
+       return static_cast<const numeric &>(*e.bp);
+}
 
+} // namespace GiNaC
 
 #endif // ndef __GINAC_NUMERIC_H__