/****************************************************************************
* *
* * genexp . h PC Werner Nickel
* * nickel @ mathematik . tu - darmstadt . de
* *
* *
* * A generator is a positive integer . The inverse of a generator is
* * denoted by its negative .
* *
* * The exponent of a generator is a short integer . The exponent of
* * a generator or its inverses is always positive . The exponent
* * vector is the sequence of exponents corresponding to a normed
* * word . The entries in an exponent vector can be negative .
* *
* * A word is a generator exponent string terminated by 0 .
*/
#ifndef GENEXP_H
#define GENEXP_H
#include "config.h"
typedef short gen;
/*
* * GNU cc has the data type long long . We can switch it on by
* * defining the macro HAVE_LONG_LONG_INT in the Makefile .
*/
#ifdef HAVE_LONG_LONG_INT
typedef long long expo;
#define EXP_FORMAT "%lld"
#else
typedef long expo;
#define EXP_FORMAT "%ld"
#endif
typedef expo *expvec;
#define EOW ((gen)0 )
struct gpower {
gen g; /* the generator */
expo e; /* its exponent */
};
typedef struct gpower gpower;
typedef gpower *word;
#endif
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