Re: intnum0

[Karim BELABAS <Karim.Belabas@math.u-psud.fr>]

[Jean-Marc Sac-Epée:]
> Could anybody show me an example of C program using intnum0 ?
> 
> I  have some problems with the syntax of this function!


/* These three lines should be in the common header file paricom.h.
 * As for now they still stand in src/language/anal.h
 */
extern entree **functions_hash;    /* functions hashtable */
extern entree *is_entry_intern(char *s, entree **table, long *pthash);
#define is_entry(s) (is_entry_intern(s,functions_hash,NULL))

/* integrate (smooth) f wrt to variable var, between (small) a and b */
GEN
integrate(char *f, char *var, GEN a, GEN b, long prec)
{
  entree *ep_var = is_entry(var);
  return intnum0(ep_var, a,b, f, 0,prec);
}

int
main()
{
  pari_init(1000000,2);
  output(integrate("x^2+3", "x", gzero, gun, DEFAULTPREC));
  return 0;
}

Hope this helps,

      Karim.
-- 
Karim Belabas                    email: Karim.Belabas@math.u-psud.fr
Dep. de Mathematiques, Bat. 425
Universite Paris-Sud             Tel: (00 33) 1 69 15 57 48
F-91405 Orsay (France)           Fax: (00 33) 1 69 15 60 19
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