| 1 | #ifndef _BIGNUM_H_
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| 2 | #define _BIGNUM_H_
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| 3 |
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| 4 | #include "internal.h"
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| 5 |
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| 6 | typedef struct big_struct bignum;
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| 7 |
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| 8 | #define BIG_SIGN_0 0
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| 9 | #define BIG_SIGN_PLUS 1
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| 10 | #define BIG_SIGN_MINUS -1
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| 11 |
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| 12 | #define BIG_OK 0
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| 13 | #define BIG_MEMERR 1
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| 14 | #define BIG_DIV_ZERO 2
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| 15 | #define BIG_ARGERR 3
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| 16 |
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| 17 | #ifdef BIG_SHORT_NAMES
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| 18 | #define big_set_big big_sb
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| 19 | #define big_set_long big_sl
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| 20 | #define big_set_ulong big_usl
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| 21 | #define big_string big_rs
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| 22 | #define big_leqp big_lq
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| 23 | #define big_expt big_x
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| 24 | #endif
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| 25 |
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| 26 | /* External variables to take care about when using the bignums */
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| 27 | typedef int bigerr_t;
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| 28 | extern int big_errno;
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| 29 | extern char *big_end_string;
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| 30 |
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| 31 | /* External functions to enable use of bignums */
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| 32 | extern bigerr_t big_init_pkg(void);
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| 33 | extern void big_release_pkg(void);
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| 34 |
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| 35 | extern bigerr_t big_create(bignum *a);
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| 36 | extern void big_destroy(bignum *a);
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| 37 |
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| 38 | extern unsigned long big_bitcount(bignum *a);
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| 39 |
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| 40 | extern bigerr_t big_set_big(bignum *a, bignum *b);
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| 41 | extern void big_set_long(long n, bignum *a);
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| 42 | extern void big_set_ulong(unsigned long n, bignum *a);
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| 43 | extern bigerr_t big_set_string(char *numstr, int base, bignum *a);
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| 44 |
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| 45 | extern int big_long(bignum *a, long *n);
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| 46 | extern int big_ulong(bignum *a, unsigned long *n);
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| 47 | extern char *big_string(bignum *a, int base);
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| 48 |
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| 49 | extern int big_sign(bignum *a);
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| 50 | extern bigerr_t big_abs(bignum *a, bignum *b);
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| 51 |
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| 52 | extern bigerr_t big_negate(bignum *a, bignum *b);
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| 53 |
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| 54 | extern int big_compare(bignum *a, bignum *b);
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| 55 | extern int big_lessp(bignum *a, bignum *b);
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| 56 | extern int big_leqp(bignum *a, bignum *b);
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| 57 | extern int big_equalp(bignum *a, bignum *b);
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| 58 | extern int big_geqp(bignum *a, bignum *b);
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| 59 | extern int big_greaterp(bignum *a, bignum *b);
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| 60 |
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| 61 | extern int big_zerop(bignum *a);
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| 62 | extern int big_evenp(bignum *a);
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| 63 | extern int big_oddp(bignum *a);
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| 64 |
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| 65 | extern bigerr_t big_add(bignum *a, bignum *b, bignum *c);
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| 66 | extern bigerr_t big_sub(bignum *a, bignum *b, bignum *c);
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| 67 |
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| 68 | extern bigerr_t big_mul(bignum *a, bignum *b, bignum *c);
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| 69 |
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| 70 | extern bigerr_t big_trunc(bignum *a, bignum *b, bignum *c, bignum *r);
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| 71 | extern bigerr_t big_floor(bignum *a, bignum *b, bignum *c, bignum *r);
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| 72 | extern bigerr_t big_ceil(bignum *a, bignum *b, bignum *c, bignum *r);
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| 73 | extern bigerr_t big_round(bignum *a, bignum *b, bignum *c, bignum *r);
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| 74 |
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| 75 | extern bigerr_t big_random(bignum *a, bignum *b);
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| 76 |
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| 77 | extern bigerr_t big_expt(bignum *a, unsigned long z, bignum *x);
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| 78 | extern bigerr_t big_exptmod(bignum *a_in, bignum *z_in, bignum *n, bignum *x);
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| 79 | extern bigerr_t big_gcd(bignum *a, bignum *b, bignum *g);
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| 80 |
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| 81 | #ifndef NULL
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| 82 | #define NULL 0
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| 83 | #endif
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| 84 |
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| 85 | #endif /* _BIGNUM_H_ */
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