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// file kernel/x/h/powmod.h: modular exponentiation
/*-----------------------------------------------------------------------+
| Copyright 2005-2006, Michel Quercia (michel.quercia@prepas.org) |
| |
| This file is part of Numerix. Numerix is free software; you can |
| redistribute it and/or modify it under the terms of the GNU Lesser |
| General Public License as published by the Free Software Foundation; |
| either version 2.1 of the License, or (at your option) any later |
| version. |
| |
| The Numerix Library is distributed in the hope that it will be |
| useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
| of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU MP Library; see the file COPYING. If not, |
| write to the Free Software Foundation, Inc., 59 Temple Place - |
| Suite 330, Boston, MA 02111-1307, USA. |
+-----------------------------------------------------------------------+
| |
| Exponentiation modulaire |
| |
+-----------------------------------------------------------------------*/
/*
entre :
a,b,c = entiers extensibles
_d = NULL ou pointeur sur un entier extensible
mode = long
sortie :
d <- gmod(a^b, c, mode)
si _d != NULL, *_d <- d
retourne d
erreur :
NEGATIVE_EXPONENT si b < 0
ZERO_DIVISOR si c = 0
*/
xint xx(private_powmod)(xint *_d, xint a, xint b, xint c, long mode);
#ifdef c_api
extern inline xint xx(gpowmod)(xint *_d, xint a, xint b, xint c, long mode) {
return xx(private_powmod)(_d,a,b,c,mode);
}
extern inline xint xx(powmod)(xint *_d, xint a, xint b, xint c) {
return xx(private_powmod)(_d,a,b,c,0);
}
extern inline xint xx(f_gpowmod)(xint a, xint b, xint c, long mode) {
return xx(private_powmod)(NULL,a,b,c,mode);
}
extern inline xint xx(f_powmod)(xint a, xint b, xint c) {
return xx(private_powmod)(NULL,a,b,c,0);
}
#endif
|
