int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3)
{
mp_int u1,u2,u3,v1,v2,v3,t1,t2,t3,q,tmp;
int err;
if ((err = mp_init_multi(&u1, &u2, &u3, &v1, &v2, &v3, &t1, &t2, &t3, &q, &tmp, NULL)) != MP_OKAY) {
return err;
}
/* initialize, (u1,u2,u3) = (1,0,a) */
mp_set(&u1, 1);
if ((err = mp_copy(a, &u3)) != MP_OKAY) { goto _ERR; }
/* initialize, (v1,v2,v3) = (0,1,b) */
mp_set(&v2, 1);
if ((err = mp_copy(b, &v3)) != MP_OKAY) { goto _ERR; }
/* loop while v3 != 0 */
while (mp_iszero(&v3) == MP_NO) {
/* q = u3/v3 */
if ((err = mp_div(&u3, &v3, &q, NULL)) != MP_OKAY) { goto _ERR; }
/* (t1,t2,t3) = (u1,u2,u3) - (v1,v2,v3)q */
if ((err = mp_mul(&v1, &q, &tmp)) != MP_OKAY) { goto _ERR; }
if ((err = mp_sub(&u1, &tmp, &t1)) != MP_OKAY) { goto _ERR; }
if ((err = mp_mul(&v2, &q, &tmp)) != MP_OKAY) { goto _ERR; }
if ((err = mp_sub(&u2, &tmp, &t2)) != MP_OKAY) { goto _ERR; }
if ((err = mp_mul(&v3, &q, &tmp)) != MP_OKAY) { goto _ERR; }
if ((err = mp_sub(&u3, &tmp, &t3)) != MP_OKAY) { goto _ERR; }
/* (u1,u2,u3) = (v1,v2,v3) */
if ((err = mp_copy(&v1, &u1)) != MP_OKAY) { goto _ERR; }
if ((err = mp_copy(&v2, &u2)) != MP_OKAY) { goto _ERR; }
if ((err = mp_copy(&v3, &u3)) != MP_OKAY) { goto _ERR; }
/* (v1,v2,v3) = (t1,t2,t3) */
if ((err = mp_copy(&t1, &v1)) != MP_OKAY) { goto _ERR; }
if ((err = mp_copy(&t2, &v2)) != MP_OKAY) { goto _ERR; }
if ((err = mp_copy(&t3, &v3)) != MP_OKAY) { goto _ERR; }
}
/* make sure U3 >= 0 */
if (u3.sign == MP_NEG) {
mp_neg(&u1, &u1);
mp_neg(&u2, &u2);
mp_neg(&u3, &u3);
}
/* copy result out */
if (U1 != NULL) { mp_exch(U1, &u1); }
if (U2 != NULL) { mp_exch(U2, &u2); }
if (U3 != NULL) { mp_exch(U3, &u3); }
err = MP_OKAY;
_ERR: mp_clear_multi(&u1, &u2, &u3, &v1, &v2, &v3, &t1, &t2, &t3, &q, &tmp, NULL);
return err;
}
/* Used with boxing. Gets an integer value, for representations that can
* hold one. */
static INTVAL get_int(PARROT_INTERP, STable *st, void *data) {
INTVAL ret;
mp_int *i = &((P6bigintBody *)data)->i;
if (MP_LT == mp_cmp_d(i, 0)) {
mp_neg(i, i);
ret = mp_get_long(i);
mp_neg(i, i);
return -ret;
}
else {
return mp_get_long(i);
}
}
static void two_complement_bitop(mp_int *a, mp_int *b, mp_int *c,
int (*mp_bitop)(mp_int *, mp_int *, mp_int *)) {
mp_int d;
if (SIGN(a) ^ SIGN(b)) {
/* exactly one of them is negative, so need to perform
* some magic. tommath stores a sign bit, but Perl 6 expects
* 2's complement */
mp_init(&d);
if (MP_NEG == SIGN(a)) {
grow_and_negate(a, USED(b), &d);
mp_bitop(&d, b, c);
} else {
grow_and_negate(b, USED(a), &d);
mp_bitop(a, &d, c);
}
if (DIGIT(c, USED(c) - 1) & ((mp_digit)1<<(mp_digit)(DIGIT_BIT - 1))) {
grow_and_negate(c, c->used, &d);
mp_copy(&d, c);
mp_neg(c, c);
}
mp_clear(&d);
} else {
mp_bitop(a, b, c);
}
}
/* Used with boxing. Sets an integer value, for representations that can hold
* one. */
static void set_int(PARROT_INTERP, STable *st, void *data, INTVAL value) {
mp_int *i = &((P6bigintBody *)data)->i;
if (value >= 0) {
mp_set_long(i, value);
}
else {
mp_set_long(i, -value);
mp_neg(i, i);
}
}
extern void
TclBNInitBignumFromWideInt(
mp_int *a, /* Bignum to initialize */
Tcl_WideInt v) /* Initial value */
{
if (v < (Tcl_WideInt)0) {
TclBNInitBignumFromWideUInt(a, (Tcl_WideUInt)(-v));
mp_neg(a, a);
} else {
TclBNInitBignumFromWideUInt(a, (Tcl_WideUInt)v);
}
}
/* Converts a possibly-signed digit string into a large binary number.
Returns assumed radix, derived from suffix 'h','o',b','.' */
int str2reg(unitptr reg, string digitstr)
{
unit temp[MAX_UNIT_PRECISION], base[MAX_UNIT_PRECISION];
int c, i;
boolean minus = FALSE;
short radix; /* base 2-16 */
mp_init(reg, 0);
i = string_length(digitstr);
if (i == 0)
return (10); /* empty string, assume radix 10 */
c = digitstr[i - 1]; /* get last char in string */
switch (c) { /* classify radix select suffix character */
case '.':
radix = 10;
break;
case 'H':
case 'h':
radix = 16;
break;
case 'O':
case 'o':
radix = 8;
break;
case 'B': /* caution! 'b' is a hex digit! */
case 'b':
radix = 2;
break;
default:
radix = 10;
break;
}
mp_init(base, radix);
if ((minus = (*digitstr == '-')) != 0)
digitstr++;
while ((c = *digitstr++) != 0) {
if (c == ',')
continue; /* allow commas in number */
c = ctox(c);
if ((c < 0) || (c >= radix))
break; /* scan terminated by any non-digit */
mp_mult(temp, reg, base);
mp_move(reg, temp);
mp_init(temp, c);
mp_add(reg, temp);
}
if (minus)
mp_neg(reg);
return (radix);
} /* str2reg */
/* b = ~a */
int mp_com(mp_int * a, mp_int * b)
{
int res;
// -x == ~x + 1 (2's complement), hence ~x == -x - 1
if ((res = mp_neg(a, b)) != MP_OKAY) {
return res;
}
if ((res = mp_sub_d(b, 1, b)) != MP_OKAY) {
return res;
}
return MP_OKAY;
}
static void from_num(MVMnum64 d, mp_int *a) {
MVMnum64 d_digit = pow(2, DIGIT_BIT);
MVMnum64 da = fabs(d);
MVMnum64 upper;
MVMnum64 lower;
MVMnum64 lowest;
MVMnum64 rest;
int digits = 0;
mp_zero(a);
while (da > d_digit * d_digit * d_digit) {;
da /= d_digit;
digits++;
}
mp_grow(a, digits + 3);
/* populate the top 3 digits */
upper = da / (d_digit*d_digit);
rest = fmod(da, d_digit*d_digit);
lower = rest / d_digit;
lowest = fmod(rest,d_digit );
if (upper >= 1) {
mp_set_long(a, (unsigned long) upper);
mp_mul_2d(a, DIGIT_BIT , a);
DIGIT(a, 0) = (mp_digit) lower;
mp_mul_2d(a, DIGIT_BIT , a);
} else {
if (lower >= 1) {
mp_set_long(a, (unsigned long) lower);
mp_mul_2d(a, DIGIT_BIT , a);
a->used = 2;
} else {
a->used = 1;
}
}
DIGIT(a, 0) = (mp_digit) lowest;
/* shift the rest */
mp_mul_2d(a, DIGIT_BIT * digits, a);
if (d < 0)
mp_neg(a, a);
mp_clamp(a);
mp_shrink(a);
}
/* Stores an int64 in a bigint result body, either as a 32-bit smallint if it
* is in range, or a big integer if not. */
static void store_int64_result(MVMP6bigintBody *body, MVMint64 result) {
if (MVM_IS_32BIT_INT(result)) {
body->u.smallint.flag = MVM_BIGINT_32_FLAG;
body->u.smallint.value = (MVMint32)result;
}
else {
mp_int *i = MVM_malloc(sizeof(mp_int));
mp_init(i);
if (result >= 0) {
MVM_bigint_mp_set_uint64(i, (MVMuint64)result);
}
else {
MVM_bigint_mp_set_uint64(i, (MVMuint64)-result);
mp_neg(i, i);
}
body->u.bigint = i;
}
}
static void two_complement_bitop(mp_int *a, mp_int *b, mp_int *c,
int (*mp_bitop)(mp_int *, mp_int *, mp_int *)) {
mp_int d;
mp_int e;
mp_int *f;
mp_int *g;
f = a;
g = b;
if (MP_NEG == SIGN(a)) {
mp_init(&d);
grow_and_negate(a, USED(b), &d);
f = &d;
}
if (MP_NEG == SIGN(b)) {
mp_init(&e);
grow_and_negate(b, USED(a), &e);
g = &e;
}
/* f and g now guaranteed to each point to positive bigints containing
* a 2s compliment representation of the values in a and b. If either
* a or b was negative, the representation is one tomath "digit" longer
* than it need be and sign extended.
*/
mp_bitop(f, g, c);
if (f == &d) mp_clear(&d);
if (g == &e) mp_clear(&e);
/* Use the fact that tomath clamps to detect results that should be
* signed. If we created extra tomath "digits" and they resulted in
* sign bits of 0, they have been clamped away. If the resulting sign
* bits were 1, they remain, and c will have more digits than either of
* original operands. Note this only works because we do not
* support NOR/NAND/NXOR, and so two zero sign bits can never create 1s.
*/
if (USED(c) > MAX(USED(a),USED(b))) {
int i;
for (i = 0; i < USED(c); i++) {
DIGIT(c, i) = (~DIGIT(c, i)) & MP_MASK;
}
mp_add_d(c, 1, c);
mp_neg(c, c);
}
}
/* Forces a bigint, even if we only have a smallint. Takes a parameter that
* indicates where to allocate a temporary mp_int if needed. */
static mp_int * force_bigint(const MVMP6bigintBody *body, mp_int **tmp) {
if (MVM_BIGINT_IS_BIG(body)) {
return body->u.bigint;
}
else {
MVMint32 value = body->u.smallint.value;
mp_int *i = MVM_malloc(sizeof(mp_int));
mp_init(i);
if (value >= 0) {
mp_set_long(i, value);
}
else {
mp_set_long(i, -value);
mp_neg(i, i);
}
while (*tmp)
tmp++;
*tmp = i;
return i;
}
}
int pb_sub(pb_poly *a, pb_poly *b, pb_poly *c)
{
int neg, err, x, y, z, characteristic;
pb_poly *tmp;
/* grow c to be the max size */
y = MAX(a->used, b->used);
if (c->alloc < y) {
if ((err = pb_grow(c, y)) != MP_OKAY) {
return err;
}
}
/* do we need to concern char */
characteristic = mp_iszero(&(c->characteristic));
/* sub the terms */
z = MIN(a->used, b->used);
for (x = 0; x < z; x++) {
if ((err = mp_sub(&(a->terms[x]), &(b->terms[x]), &(c->terms[x]))) != MP_OKAY) {
return err;
}
if (characteristic == MP_NO) {
if ((err = mp_mod(&(c->terms[x]), &(c->characteristic), &(c->terms[x]))) != MP_OKAY) {
return err;
}
}
}
/* excess digits? */
if (y != z) {
if (a->used == y) {
tmp = a;
neg = 0;
} else {
tmp = b;
neg = 1;
}
for (x = z; x < y; x++) {
if (characteristic == MP_NO) {
if ((err = mp_mod(&(tmp->terms[x]), &(c->characteristic), &(c->terms[x]))) != MP_OKAY) {
return err;
}
if (neg) {
if ((err = mp_sub(&(c->characteristic), &(c->terms[x]), &(c->terms[x]))) != MP_OKAY) {
return err;
}
}
} else {
if (neg) {
if ((err = mp_neg(&(tmp->terms[x]), &(c->terms[x]))) != MP_OKAY) {
return err;
}
} else {
if ((err = mp_copy(&(tmp->terms[x]), &(c->terms[x]))) != MP_OKAY) {
return err;
}
}
}
}
}
/* zero excess */
for (x = y; x < c->used; x++) {
mp_zero(&(c->terms[x]));
}
c->used = y;
pb_clamp(c);
return MP_OKAY;
}
int main(void)
{
unsigned rr;
int cnt, ix;
#if LTM_DEMO_TEST_VS_MTEST
unsigned long expt_n, add_n, sub_n, mul_n, div_n, sqr_n, mul2d_n, div2d_n,
gcd_n, lcm_n, inv_n, div2_n, mul2_n, add_d_n, sub_d_n;
char* ret;
#else
unsigned long s, t;
unsigned long long q, r;
mp_digit mp;
int i, n, err, should;
#endif
if (mp_init_multi(&a, &b, &c, &d, &e, &f, NULL)!= MP_OKAY)
return EXIT_FAILURE;
atexit(_cleanup);
#if defined(LTM_DEMO_REAL_RAND)
if (!fd_urandom) {
fd_urandom = fopen("/dev/urandom", "r");
if (!fd_urandom) {
#if !defined(_WIN32)
fprintf(stderr, "\ncould not open /dev/urandom\n");
#endif
}
}
#endif
srand(LTM_DEMO_RAND_SEED);
#ifdef MP_8BIT
printf("Digit size 8 Bit \n");
#endif
#ifdef MP_16BIT
printf("Digit size 16 Bit \n");
#endif
#ifdef MP_32BIT
printf("Digit size 32 Bit \n");
#endif
#ifdef MP_64BIT
printf("Digit size 64 Bit \n");
#endif
printf("Size of mp_digit: %u\n", (unsigned int)sizeof(mp_digit));
printf("Size of mp_word: %u\n", (unsigned int)sizeof(mp_word));
printf("DIGIT_BIT: %d\n", DIGIT_BIT);
printf("MP_PREC: %d\n", MP_PREC);
#if LTM_DEMO_TEST_VS_MTEST == 0
// trivial stuff
// a: 0->5
mp_set_int(&a, 5);
// a: 5-> b: -5
mp_neg(&a, &b);
if (mp_cmp(&a, &b) != MP_GT) {
return EXIT_FAILURE;
}
if (mp_cmp(&b, &a) != MP_LT) {
return EXIT_FAILURE;
}
// a: 5-> a: -5
mp_neg(&a, &a);
if (mp_cmp(&b, &a) != MP_EQ) {
return EXIT_FAILURE;
}
// a: -5-> b: 5
mp_abs(&a, &b);
if (mp_isneg(&b) != MP_NO) {
return EXIT_FAILURE;
}
// a: -5-> b: -4
mp_add_d(&a, 1, &b);
if (mp_isneg(&b) != MP_YES) {
return EXIT_FAILURE;
}
if (mp_get_int(&b) != 4) {
return EXIT_FAILURE;
}
// a: -5-> b: 1
mp_add_d(&a, 6, &b);
if (mp_get_int(&b) != 1) {
return EXIT_FAILURE;
}
// a: -5-> a: 1
mp_add_d(&a, 6, &a);
if (mp_get_int(&a) != 1) {
return EXIT_FAILURE;
}
mp_zero(&a);
// a: 0-> a: 6
mp_add_d(&a, 6, &a);
if (mp_get_int(&a) != 6) {
return EXIT_FAILURE;
}
mp_set_int(&a, 0);
mp_set_int(&b, 1);
if ((err = mp_jacobi(&a, &b, &i)) != MP_OKAY) {
printf("Failed executing mp_jacobi(0 | 1) %s.\n", mp_error_to_string(err));
return EXIT_FAILURE;
}
if (i != 1) {
printf("Failed trivial mp_jacobi(0 | 1) %d != 1\n", i);
return EXIT_FAILURE;
}
for (cnt = 0; cnt < (int)(sizeof(jacobi)/sizeof(jacobi[0])); ++cnt) {
mp_set_int(&b, jacobi[cnt].n);
/* only test positive values of a */
for (n = -5; n <= 10; ++n) {
mp_set_int(&a, abs(n));
should = MP_OKAY;
if (n < 0) {
mp_neg(&a, &a);
/* Until #44 is fixed the negative a's must fail */
should = MP_VAL;
}
if ((err = mp_jacobi(&a, &b, &i)) != should) {
printf("Failed executing mp_jacobi(%d | %lu) %s.\n", n, jacobi[cnt].n, mp_error_to_string(err));
return EXIT_FAILURE;
}
if (err == MP_OKAY && i != jacobi[cnt].c[n + 5]) {
printf("Failed trivial mp_jacobi(%d | %lu) %d != %d\n", n, jacobi[cnt].n, i, jacobi[cnt].c[n + 5]);
return EXIT_FAILURE;
}
}
}
// test mp_get_int
printf("\n\nTesting: mp_get_int");
for (i = 0; i < 1000; ++i) {
t = ((unsigned long) rand () * rand () + 1) & 0xFFFFFFFF;
mp_set_int (&a, t);
if (t != mp_get_int (&a)) {
printf ("\nmp_get_int() bad result!");
return EXIT_FAILURE;
}
}
mp_set_int(&a, 0);
if (mp_get_int(&a) != 0) {
printf("\nmp_get_int() bad result!");
return EXIT_FAILURE;
}
mp_set_int(&a, 0xffffffff);
if (mp_get_int(&a) != 0xffffffff) {
printf("\nmp_get_int() bad result!");
return EXIT_FAILURE;
}
printf("\n\nTesting: mp_get_long\n");
for (i = 0; i < (int)(sizeof(unsigned long)*CHAR_BIT) - 1; ++i) {
t = (1ULL << (i+1)) - 1;
if (!t)
t = -1;
printf(" t = 0x%lx i = %d\r", t, i);
do {
if (mp_set_long(&a, t) != MP_OKAY) {
printf("\nmp_set_long() error!");
return EXIT_FAILURE;
}
s = mp_get_long(&a);
if (s != t) {
printf("\nmp_get_long() bad result! 0x%lx != 0x%lx", s, t);
return EXIT_FAILURE;
}
t <<= 1;
} while(t);
}
printf("\n\nTesting: mp_get_long_long\n");
for (i = 0; i < (int)(sizeof(unsigned long long)*CHAR_BIT) - 1; ++i) {
r = (1ULL << (i+1)) - 1;
if (!r)
r = -1;
printf(" r = 0x%llx i = %d\r", r, i);
do {
if (mp_set_long_long(&a, r) != MP_OKAY) {
printf("\nmp_set_long_long() error!");
return EXIT_FAILURE;
}
q = mp_get_long_long(&a);
if (q != r) {
printf("\nmp_get_long_long() bad result! 0x%llx != 0x%llx", q, r);
return EXIT_FAILURE;
}
r <<= 1;
} while(r);
}
// test mp_sqrt
printf("\n\nTesting: mp_sqrt\n");
for (i = 0; i < 1000; ++i) {
printf ("%6d\r", i);
fflush (stdout);
n = (rand () & 15) + 1;
mp_rand (&a, n);
if (mp_sqrt (&a, &b) != MP_OKAY) {
printf ("\nmp_sqrt() error!");
return EXIT_FAILURE;
}
mp_n_root_ex (&a, 2, &c, 0);
mp_n_root_ex (&a, 2, &d, 1);
if (mp_cmp_mag (&c, &d) != MP_EQ) {
printf ("\nmp_n_root_ex() bad result!");
return EXIT_FAILURE;
}
if (mp_cmp_mag (&b, &c) != MP_EQ) {
printf ("mp_sqrt() bad result!\n");
return EXIT_FAILURE;
}
}
printf("\n\nTesting: mp_is_square\n");
for (i = 0; i < 1000; ++i) {
printf ("%6d\r", i);
fflush (stdout);
/* test mp_is_square false negatives */
n = (rand () & 7) + 1;
mp_rand (&a, n);
mp_sqr (&a, &a);
if (mp_is_square (&a, &n) != MP_OKAY) {
printf ("\nfn:mp_is_square() error!");
return EXIT_FAILURE;
}
if (n == 0) {
printf ("\nfn:mp_is_square() bad result!");
return EXIT_FAILURE;
}
/* test for false positives */
mp_add_d (&a, 1, &a);
if (mp_is_square (&a, &n) != MP_OKAY) {
printf ("\nfp:mp_is_square() error!");
return EXIT_FAILURE;
}
if (n == 1) {
printf ("\nfp:mp_is_square() bad result!");
return EXIT_FAILURE;
}
}
printf("\n\n");
// r^2 = n (mod p)
for (i = 0; i < (int)(sizeof(sqrtmod_prime)/sizeof(sqrtmod_prime[0])); ++i) {
mp_set_int(&a, sqrtmod_prime[i].p);
mp_set_int(&b, sqrtmod_prime[i].n);
if (mp_sqrtmod_prime(&b, &a, &c) != MP_OKAY) {
printf("Failed executing %d. mp_sqrtmod_prime\n", (i+1));
return EXIT_FAILURE;
}
if (mp_cmp_d(&c, sqrtmod_prime[i].r) != MP_EQ) {
printf("Failed %d. trivial mp_sqrtmod_prime\n", (i+1));
ndraw(&c, "r");
return EXIT_FAILURE;
}
}
/* test for size */
for (ix = 10; ix < 128; ix++) {
printf ("Testing (not safe-prime): %9d bits \r", ix);
fflush (stdout);
err = mp_prime_random_ex (&a, 8, ix,
(rand () & 1) ? 0 : LTM_PRIME_2MSB_ON, myrng,
NULL);
if (err != MP_OKAY) {
printf ("failed with err code %d\n", err);
return EXIT_FAILURE;
}
if (mp_count_bits (&a) != ix) {
printf ("Prime is %d not %d bits!!!\n", mp_count_bits (&a), ix);
return EXIT_FAILURE;
}
}
printf("\n");
for (ix = 16; ix < 128; ix++) {
printf ("Testing ( safe-prime): %9d bits \r", ix);
fflush (stdout);
err = mp_prime_random_ex (
&a, 8, ix, ((rand () & 1) ? 0 : LTM_PRIME_2MSB_ON) | LTM_PRIME_SAFE,
myrng, NULL);
if (err != MP_OKAY) {
printf ("failed with err code %d\n", err);
return EXIT_FAILURE;
}
if (mp_count_bits (&a) != ix) {
printf ("Prime is %d not %d bits!!!\n", mp_count_bits (&a), ix);
return EXIT_FAILURE;
}
/* let's see if it's really a safe prime */
mp_sub_d (&a, 1, &a);
mp_div_2 (&a, &a);
mp_prime_is_prime (&a, 8, &cnt);
if (cnt != MP_YES) {
printf ("sub is not prime!\n");
return EXIT_FAILURE;
}
}
printf("\n\n");
// test montgomery
printf("Testing: montgomery...\n");
for (i = 1; i <= 10; i++) {
if (i == 10)
i = 1000;
printf(" digit size: %2d\r", i);
fflush(stdout);
for (n = 0; n < 1000; n++) {
mp_rand(&a, i);
a.dp[0] |= 1;
// let's see if R is right
mp_montgomery_calc_normalization(&b, &a);
mp_montgomery_setup(&a, &mp);
// now test a random reduction
for (ix = 0; ix < 100; ix++) {
mp_rand(&c, 1 + abs(rand()) % (2*i));
mp_copy(&c, &d);
mp_copy(&c, &e);
mp_mod(&d, &a, &d);
mp_montgomery_reduce(&c, &a, mp);
mp_mulmod(&c, &b, &a, &c);
if (mp_cmp(&c, &d) != MP_EQ) {
printf("d = e mod a, c = e MOD a\n");
mp_todecimal(&a, buf); printf("a = %s\n", buf);
mp_todecimal(&e, buf); printf("e = %s\n", buf);
mp_todecimal(&d, buf); printf("d = %s\n", buf);
mp_todecimal(&c, buf); printf("c = %s\n", buf);
printf("compare no compare!\n"); return EXIT_FAILURE; }
/* only one big montgomery reduction */
if (i > 10)
{
n = 1000;
ix = 100;
}
}
}
}
printf("\n\n");
mp_read_radix(&a, "123456", 10);
mp_toradix_n(&a, buf, 10, 3);
printf("a == %s\n", buf);
mp_toradix_n(&a, buf, 10, 4);
printf("a == %s\n", buf);
mp_toradix_n(&a, buf, 10, 30);
printf("a == %s\n", buf);
#if 0
for (;;) {
fgets(buf, sizeof(buf), stdin);
mp_read_radix(&a, buf, 10);
mp_prime_next_prime(&a, 5, 1);
mp_toradix(&a, buf, 10);
printf("%s, %lu\n", buf, a.dp[0] & 3);
}
#endif
/* test mp_cnt_lsb */
printf("\n\nTesting: mp_cnt_lsb");
mp_set(&a, 1);
for (ix = 0; ix < 1024; ix++) {
if (mp_cnt_lsb (&a) != ix) {
printf ("Failed at %d, %d\n", ix, mp_cnt_lsb (&a));
return EXIT_FAILURE;
}
mp_mul_2 (&a, &a);
}
/* test mp_reduce_2k */
printf("\n\nTesting: mp_reduce_2k\n");
for (cnt = 3; cnt <= 128; ++cnt) {
mp_digit tmp;
mp_2expt (&a, cnt);
mp_sub_d (&a, 2, &a); /* a = 2**cnt - 2 */
printf ("\r %4d bits", cnt);
printf ("(%d)", mp_reduce_is_2k (&a));
mp_reduce_2k_setup (&a, &tmp);
printf ("(%lu)", (unsigned long) tmp);
for (ix = 0; ix < 1000; ix++) {
if (!(ix & 127)) {
printf (".");
fflush (stdout);
}
mp_rand (&b, (cnt / DIGIT_BIT + 1) * 2);
mp_copy (&c, &b);
mp_mod (&c, &a, &c);
mp_reduce_2k (&b, &a, 2);
if (mp_cmp (&c, &b)) {
printf ("FAILED\n");
return EXIT_FAILURE;
}
}
}
/* test mp_div_3 */
printf("\n\nTesting: mp_div_3...\n");
mp_set(&d, 3);
for (cnt = 0; cnt < 10000;) {
mp_digit r2;
if (!(++cnt & 127))
{
printf("%9d\r", cnt);
fflush(stdout);
}
mp_rand(&a, abs(rand()) % 128 + 1);
mp_div(&a, &d, &b, &e);
mp_div_3(&a, &c, &r2);
if (mp_cmp(&b, &c) || mp_cmp_d(&e, r2)) {
printf("\nmp_div_3 => Failure\n");
}
}
printf("\nPassed div_3 testing");
/* test the DR reduction */
printf("\n\nTesting: mp_dr_reduce...\n");
for (cnt = 2; cnt < 32; cnt++) {
printf ("\r%d digit modulus", cnt);
mp_grow (&a, cnt);
mp_zero (&a);
for (ix = 1; ix < cnt; ix++) {
a.dp[ix] = MP_MASK;
}
a.used = cnt;
a.dp[0] = 3;
mp_rand (&b, cnt - 1);
mp_copy (&b, &c);
rr = 0;
do {
if (!(rr & 127)) {
printf (".");
fflush (stdout);
}
mp_sqr (&b, &b);
mp_add_d (&b, 1, &b);
mp_copy (&b, &c);
mp_mod (&b, &a, &b);
mp_dr_setup(&a, &mp),
mp_dr_reduce (&c, &a, mp);
if (mp_cmp (&b, &c) != MP_EQ) {
printf ("Failed on trial %u\n", rr);
return EXIT_FAILURE;
}
} while (++rr < 500);
printf (" passed");
fflush (stdout);
}
#if LTM_DEMO_TEST_REDUCE_2K_L
/* test the mp_reduce_2k_l code */
#if LTM_DEMO_TEST_REDUCE_2K_L == 1
/* first load P with 2^1024 - 0x2A434 B9FDEC95 D8F9D550 FFFFFFFF FFFFFFFF */
mp_2expt(&a, 1024);
mp_read_radix(&b, "2A434B9FDEC95D8F9D550FFFFFFFFFFFFFFFF", 16);
mp_sub(&a, &b, &a);
#elif LTM_DEMO_TEST_REDUCE_2K_L == 2
/* p = 2^2048 - 0x1 00000000 00000000 00000000 00000000 4945DDBF 8EA2A91D 5776399B B83E188F */
mp_2expt(&a, 2048);
mp_read_radix(&b,
"1000000000000000000000000000000004945DDBF8EA2A91D5776399BB83E188F",
16);
mp_sub(&a, &b, &a);
#else
#error oops
#endif
mp_todecimal(&a, buf);
printf("\n\np==%s\n", buf);
/* now mp_reduce_is_2k_l() should return */
if (mp_reduce_is_2k_l(&a) != 1) {
printf("mp_reduce_is_2k_l() return 0, should be 1\n");
return EXIT_FAILURE;
}
mp_reduce_2k_setup_l(&a, &d);
/* now do a million square+1 to see if it varies */
mp_rand(&b, 64);
mp_mod(&b, &a, &b);
mp_copy(&b, &c);
printf("Testing: mp_reduce_2k_l...");
fflush(stdout);
for (cnt = 0; cnt < (int)(1UL << 20); cnt++) {
mp_sqr(&b, &b);
mp_add_d(&b, 1, &b);
mp_reduce_2k_l(&b, &a, &d);
mp_sqr(&c, &c);
mp_add_d(&c, 1, &c);
mp_mod(&c, &a, &c);
if (mp_cmp(&b, &c) != MP_EQ) {
printf("mp_reduce_2k_l() failed at step %d\n", cnt);
mp_tohex(&b, buf);
printf("b == %s\n", buf);
mp_tohex(&c, buf);
printf("c == %s\n", buf);
return EXIT_FAILURE;
}
}
printf("...Passed\n");
#endif /* LTM_DEMO_TEST_REDUCE_2K_L */
#else
div2_n = mul2_n = inv_n = expt_n = lcm_n = gcd_n = add_n =
sub_n = mul_n = div_n = sqr_n = mul2d_n = div2d_n = cnt = add_d_n =
sub_d_n = 0;
/* force KARA and TOOM to enable despite cutoffs */
KARATSUBA_SQR_CUTOFF = KARATSUBA_MUL_CUTOFF = 8;
TOOM_SQR_CUTOFF = TOOM_MUL_CUTOFF = 16;
for (;;) {
/* randomly clear and re-init one variable, this has the affect of triming the alloc space */
switch (abs(rand()) % 7) {
case 0:
mp_clear(&a);
mp_init(&a);
break;
case 1:
mp_clear(&b);
mp_init(&b);
break;
case 2:
mp_clear(&c);
mp_init(&c);
break;
case 3:
mp_clear(&d);
mp_init(&d);
break;
case 4:
mp_clear(&e);
mp_init(&e);
break;
case 5:
mp_clear(&f);
mp_init(&f);
break;
case 6:
break; /* don't clear any */
}
printf
("%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu/%4lu ",
add_n, sub_n, mul_n, div_n, sqr_n, mul2d_n, div2d_n, gcd_n, lcm_n,
expt_n, inv_n, div2_n, mul2_n, add_d_n, sub_d_n);
ret=fgets(cmd, 4095, stdin); if(!ret){_panic(__LINE__);}
cmd[strlen(cmd) - 1] = 0;
printf("%-6s ]\r", cmd);
fflush(stdout);
if (!strcmp(cmd, "mul2d")) {
++mul2d_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
sscanf(buf, "%d", &rr);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
mp_mul_2d(&a, rr, &a);
a.sign = b.sign;
if (mp_cmp(&a, &b) != MP_EQ) {
printf("mul2d failed, rr == %d\n", rr);
draw(&a);
draw(&b);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "div2d")) {
++div2d_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
sscanf(buf, "%d", &rr);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
mp_div_2d(&a, rr, &a, &e);
a.sign = b.sign;
if (a.used == b.used && a.used == 0) {
a.sign = b.sign = MP_ZPOS;
}
if (mp_cmp(&a, &b) != MP_EQ) {
printf("div2d failed, rr == %d\n", rr);
draw(&a);
draw(&b);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "add")) {
++add_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_add(&d, &b, &d);
if (mp_cmp(&c, &d) != MP_EQ) {
printf("add %lu failure!\n", add_n);
draw(&a);
draw(&b);
draw(&c);
draw(&d);
return EXIT_FAILURE;
}
/* test the sign/unsigned storage functions */
rr = mp_signed_bin_size(&c);
mp_to_signed_bin(&c, (unsigned char *) cmd);
memset(cmd + rr, rand() & 255, sizeof(cmd) - rr);
mp_read_signed_bin(&d, (unsigned char *) cmd, rr);
if (mp_cmp(&c, &d) != MP_EQ) {
printf("mp_signed_bin failure!\n");
draw(&c);
draw(&d);
return EXIT_FAILURE;
}
rr = mp_unsigned_bin_size(&c);
mp_to_unsigned_bin(&c, (unsigned char *) cmd);
memset(cmd + rr, rand() & 255, sizeof(cmd) - rr);
mp_read_unsigned_bin(&d, (unsigned char *) cmd, rr);
if (mp_cmp_mag(&c, &d) != MP_EQ) {
printf("mp_unsigned_bin failure!\n");
draw(&c);
draw(&d);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "sub")) {
++sub_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_sub(&d, &b, &d);
if (mp_cmp(&c, &d) != MP_EQ) {
printf("sub %lu failure!\n", sub_n);
draw(&a);
draw(&b);
draw(&c);
draw(&d);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "mul")) {
++mul_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_mul(&d, &b, &d);
if (mp_cmp(&c, &d) != MP_EQ) {
printf("mul %lu failure!\n", mul_n);
draw(&a);
draw(&b);
draw(&c);
draw(&d);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "div")) {
++div_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&c, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&d, buf, 64);
mp_div(&a, &b, &e, &f);
if (mp_cmp(&c, &e) != MP_EQ || mp_cmp(&d, &f) != MP_EQ) {
printf("div %lu %d, %d, failure!\n", div_n, mp_cmp(&c, &e),
mp_cmp(&d, &f));
draw(&a);
draw(&b);
draw(&c);
draw(&d);
draw(&e);
draw(&f);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "sqr")) {
++sqr_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
mp_copy(&a, &c);
mp_sqr(&c, &c);
if (mp_cmp(&b, &c) != MP_EQ) {
printf("sqr %lu failure!\n", sqr_n);
draw(&a);
draw(&b);
draw(&c);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "gcd")) {
++gcd_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_gcd(&d, &b, &d);
d.sign = c.sign;
if (mp_cmp(&c, &d) != MP_EQ) {
printf("gcd %lu failure!\n", gcd_n);
draw(&a);
draw(&b);
draw(&c);
draw(&d);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "lcm")) {
++lcm_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&c, buf, 64);
mp_copy(&a, &d);
mp_lcm(&d, &b, &d);
d.sign = c.sign;
if (mp_cmp(&c, &d) != MP_EQ) {
printf("lcm %lu failure!\n", lcm_n);
draw(&a);
draw(&b);
draw(&c);
draw(&d);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "expt")) {
++expt_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&c, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&d, buf, 64);
mp_copy(&a, &e);
mp_exptmod(&e, &b, &c, &e);
if (mp_cmp(&d, &e) != MP_EQ) {
printf("expt %lu failure!\n", expt_n);
draw(&a);
draw(&b);
draw(&c);
draw(&d);
draw(&e);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "invmod")) {
++inv_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&c, buf, 64);
mp_invmod(&a, &b, &d);
mp_mulmod(&d, &a, &b, &e);
if (mp_cmp_d(&e, 1) != MP_EQ) {
printf("inv [wrong value from MPI?!] failure\n");
draw(&a);
draw(&b);
draw(&c);
draw(&d);
draw(&e);
mp_gcd(&a, &b, &e);
draw(&e);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "div2")) {
++div2_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
mp_div_2(&a, &c);
if (mp_cmp(&c, &b) != MP_EQ) {
printf("div_2 %lu failure\n", div2_n);
draw(&a);
draw(&b);
draw(&c);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "mul2")) {
++mul2_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
mp_mul_2(&a, &c);
if (mp_cmp(&c, &b) != MP_EQ) {
printf("mul_2 %lu failure\n", mul2_n);
draw(&a);
draw(&b);
draw(&c);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "add_d")) {
++add_d_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
sscanf(buf, "%d", &ix);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
mp_add_d(&a, ix, &c);
if (mp_cmp(&b, &c) != MP_EQ) {
printf("add_d %lu failure\n", add_d_n);
draw(&a);
draw(&b);
draw(&c);
printf("d == %d\n", ix);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "sub_d")) {
++sub_d_n;
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&a, buf, 64);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
sscanf(buf, "%d", &ix);
ret=fgets(buf, 4095, stdin); if(!ret){_panic(__LINE__);}
mp_read_radix(&b, buf, 64);
mp_sub_d(&a, ix, &c);
if (mp_cmp(&b, &c) != MP_EQ) {
printf("sub_d %lu failure\n", sub_d_n);
draw(&a);
draw(&b);
draw(&c);
printf("d == %d\n", ix);
return EXIT_FAILURE;
}
} else if (!strcmp(cmd, "exit")) {
printf("\nokay, exiting now\n");
break;
}
}
#endif
return 0;
}
static int neg(void *a, void *b)
{
LTC_ARGCHK(a != NULL);
LTC_ARGCHK(b != NULL);
return mpi_to_ltc_error(mp_neg(a, b));
}
int mp_toom_cook_5_mul(mp_int *a, mp_int *b, mp_int *c)
{
mp_int w1, w2, w3, w4, w5, w6, w7, w8, w9;
mp_int tmp1, tmp2;
mp_int a0, a1, a2, a3, a4;
mp_int b0, b1, b2, b3, b4;
int e = MP_OKAY;
int B, count, sign;
B = (MAX(a->used, b->used)) / 5;
sign = (a->sign != b->sign) ? MP_NEG : MP_ZPOS;
if (MIN(a->used, b->used) < TOOM_COOK_5_MUL_CO) {
if ((e = mp_mul(a, b, c)) != MP_OKAY) {
return e;
}
c->sign = sign;
return MP_OKAY;
}
if ((e =
mp_init_multi(&w1, &w2, &w3, &w4, &w5, &w6, &w7, &w8, &w9, &tmp1, &tmp2,
//&a0, &a1, &a2, &a3, &a4, &b0, &b1, &b2, &b3, &b4,
NULL)) != MP_OKAY) {
goto ERR0;
//goto ERR;
}
if ((e = mp_init_size(&a0, B)) != MP_OKAY) {
goto ERRa0;
}
if ((e = mp_init_size(&a1, B)) != MP_OKAY) {
goto ERRa1;
}
if ((e = mp_init_size(&a2, B)) != MP_OKAY) {
goto ERRa2;
}
if ((e = mp_init_size(&a3, B)) != MP_OKAY) {
goto ERRa3;
}
if ((e = mp_init_size(&a4, B)) != MP_OKAY) {
goto ERRa4;
}
if ((e = mp_init_size(&b0, B)) != MP_OKAY) {
goto ERRb0;
}
if ((e = mp_init_size(&b1, B)) != MP_OKAY) {
goto ERRb1;
}
if ((e = mp_init_size(&b2, B)) != MP_OKAY) {
goto ERRb2;
}
if ((e = mp_init_size(&b3, B)) != MP_OKAY) {
goto ERRb3;
}
if ((e = mp_init_size(&b4, B)) != MP_OKAY) {
goto ERRb4;
}
// A = a4*x^4 + a3*x^3 + a2*x^2 + a1*x + a0
for (count = 0; count < a->used; count++) {
switch (count / B) {
case 0:
a0.dp[count] = a->dp[count];
a0.used++;
break;
case 1:
a1.dp[count - B] = a->dp[count];
a1.used++;
break;
case 2:
a2.dp[count - 2 * B] = a->dp[count];
a2.used++;
break;
case 3:
a3.dp[count - 3 * B] = a->dp[count];
a3.used++;
break;
case 4:
a4.dp[count - 4 * B] = a->dp[count];
a4.used++;
break;
default:
a4.dp[count - 4 * B] = a->dp[count];
a4.used++;
break;
}
}
mp_clamp(&a0);
mp_clamp(&a1);
mp_clamp(&a2);
mp_clamp(&a3);
mp_clamp(&a4);
// B = b4*x^4 + b3*x^3 + b2*x^2 + b1*x + b0
for (count = 0; count < b->used; count++) {
switch (count / B) {
case 0:
b0.dp[count] = b->dp[count];
b0.used++;
break;
case 1:
b1.dp[count - B] = b->dp[count];
b1.used++;
break;
case 2:
b2.dp[count - 2 * B] = b->dp[count];
b2.used++;
break;
case 3:
b3.dp[count - 3 * B] = b->dp[count];
b3.used++;
break;
case 4:
b4.dp[count - 4 * B] = b->dp[count];
b4.used++;
break;
default:
b4.dp[count - 4 * B] = b->dp[count];
b4.used++;
break;
}
}
mp_clamp(&b0);
mp_clamp(&b1);
mp_clamp(&b2);
mp_clamp(&b3);
mp_clamp(&b4);
/*
if ((e = mp_mod_2d(a, DIGIT_BIT * B, &a0)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_copy(a, &a1)) != MP_OKAY) {
goto ERR;
}
mp_rshd(&a1, B);
mp_mod_2d(&a1, DIGIT_BIT * B, &a1);
if ((e = mp_copy(a, &a2)) != MP_OKAY) {
goto ERR;
}
mp_rshd(&a2, B * 2);
mp_mod_2d(&a2, DIGIT_BIT * B, &a2);
if ((e = mp_copy(a, &a3)) != MP_OKAY) {
goto ERR;
}
mp_rshd(&a3, B * 3);
mp_mod_2d(&a3, DIGIT_BIT * B, &a3);
if ((e = mp_copy(a, &a4)) != MP_OKAY) {
goto ERR;
}
mp_rshd(&a4, B * 4);
if ((e = mp_mod_2d(b, DIGIT_BIT * B, &b0)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_copy(a, &b1)) != MP_OKAY) {
goto ERR;
}
mp_rshd(&b1, B);
mp_mod_2d(&b1, DIGIT_BIT * B, &b1);
if ((e = mp_copy(b, &b2)) != MP_OKAY) {
goto ERR;
}
mp_rshd(&b2, B * 2);
mp_mod_2d(&b2, DIGIT_BIT * B, &b2);
if ((e = mp_copy(b, &b3)) != MP_OKAY) {
goto ERR;
}
mp_rshd(&b3, B * 3);
mp_mod_2d(&b3, DIGIT_BIT * B, &b3);
if ((e = mp_copy(b, &b4)) != MP_OKAY) {
goto ERR;
}
mp_rshd(&b4, B * 4);
*/
// S1 = a4*b4
if ((e = mp_mul(&a4, &b4, &w1)) != MP_OKAY) {
goto ERR;
}
// S9 = a0*b0
if ((e = mp_mul(&a0, &b0, &w9)) != MP_OKAY) {
goto ERR;
}
// S2 = (a0- 2*a1 +4*a2 -8*a3 +16*a4)
if ((e = mp_mul_2d(&a1, 1, &tmp1)) != MP_OKAY) {
goto ERR;
} // 2*a1 = tmp1
if ((e = mp_sub(&a0, &tmp1, &w2)) != MP_OKAY) {
goto ERR;
} // a0- 2*a1 = a0 - tmp1 = w2
if ((e = mp_mul_2d(&a2, 2, &tmp1)) != MP_OKAY) {
goto ERR;
} // 4*a2 = tmp1
if ((e = mp_add(&w2, &tmp1, &w2)) != MP_OKAY) {
goto ERR;
} // a0- 2*a1 +4*a2 = w2 + tmp1 = w2
if ((e = mp_mul_2d(&a3, 3, &tmp1)) != MP_OKAY) {
goto ERR;
} // 8*a3 = tmp1
if ((e = mp_sub(&w2, &tmp1, &w2)) != MP_OKAY) {
goto ERR;
} // a0- 2*a1 +4*a2 -8*a3 = w2 - tmp1 = w2
if ((e = mp_mul_2d(&a4, 4, &tmp1)) != MP_OKAY) {
goto ERR;
} // 16*a4 = tmp1
if ((e = mp_add(&w2, &tmp1, &w2)) != MP_OKAY) {
goto ERR;
} // a0- 2*a1 +4*a2 -8*a3 +16*a4 = w2 + tmp1 = w2
// * (b0- 2*b1 +4*b2 -8*b3 +16*b4)
if ((e = mp_mul_2d(&b1, 1, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&b0, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b2, 2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b3, 3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b4, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul(&tmp2, &w2, &w2)) != MP_OKAY) {
goto ERR;
}
// S5 = (a0+ 2*a1+ 4*a2+ 8*a3+ 16*a4)
if ((e = mp_mul_2d(&a1, 1, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&a0, &tmp1, &w5)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a2, 2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w5, &tmp1, &w5)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a3, 3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w5, &tmp1, &w5)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a4, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w5, &tmp1, &w5)) != MP_OKAY) {
goto ERR;
}
// *(b0+ 2*b1+ 4*b2+ 8*b3+ 16*b4)
if ((e = mp_mul_2d(&b1, 1, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&b0, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b2, 2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b3, 3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b4, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul(&tmp2, &w5, &w5)) != MP_OKAY) {
goto ERR;
}
// S3 = (a4+ 2*a3+ 4*a2+ 8*a1+ 16*a0)
if ((e = mp_mul_2d(&a3, 1, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&a4, &tmp1, &w3)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a2, 2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w3, &tmp1, &w3)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a1, 3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w3, &tmp1, &w3)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a0, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w3, &tmp1, &w3)) != MP_OKAY) {
goto ERR;
}
// * (b4+ 2*b3+ 4*b2+ 8*b1+ 16*b0)
if ((e = mp_mul_2d(&b3, 1, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&b4, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b2, 2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b1, 3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b0, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul(&tmp2, &w3, &w3)) != MP_OKAY) {
goto ERR;
}
// S8 = (a4- 2*a3+ 4*a2- 8*a1+ 16*a0)
if ((e = mp_mul_2d(&a3, 1, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&a4, &tmp1, &w8)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a2, 2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w8, &tmp1, &w8)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a1, 3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&w8, &tmp1, &w8)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a0, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w8, &tmp1, &w8)) != MP_OKAY) {
goto ERR;
}
//* (b4- 2*b3+ 4*b2- 8*b1+ 16*b0)
if ((e = mp_mul_2d(&b3, 1, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&b4, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b2, 2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b1, 3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b0, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul(&tmp2, &w8, &w8)) != MP_OKAY) {
goto ERR;
}
// S4 = (a0+ 4*a1+ 16*a2+ 64*a3+ 256*a4)
if ((e = mp_mul_2d(&a1, 2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&a0, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a2, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w4, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a3, 6, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w4, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&a4, 8, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w4, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
//* (b0+ 4*b1+ 16*b2+ 64*b3+ 256*b4)
if ((e = mp_mul_2d(&b1, 2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&b0, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b2, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b3, 6, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul_2d(&b4, 8, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp2, &tmp1, &tmp2)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul(&tmp2, &w4, &w4)) != MP_OKAY) {
goto ERR;
}
// S6 = (a0- a1+ a2- a3 +a4)
if ((e = mp_sub(&a0, &a1, &w6)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w6, &a2, &w6)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&w6, &a3, &w6)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w6, &a4, &w6)) != MP_OKAY) {
goto ERR;
}
// * (b0- b1+ b2- b3+ b4)
if ((e = mp_sub(&b0, &b1, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &b2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&tmp1, &b3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &b4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul(&tmp1, &w6, &w6)) != MP_OKAY) {
goto ERR;
}
// S7 = (a0+ a1+ a2+ a3+ a4)
if ((e = mp_add(&a0, &a1, &w7)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w7, &a2, &w7)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w7, &a3, &w7)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w7, &a4, &w7)) != MP_OKAY) {
goto ERR;
}
// * (b0+ b1+ b2+ b3+ b4)
if ((e = mp_add(&b0, &b1, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &b2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &b3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &b4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_mul(&tmp1, &w7, &w7)) != MP_OKAY) {
goto ERR;
}
// S6 -= S7
if ((e = mp_sub(&w6, &w7, &w6)) != MP_OKAY) {
goto ERR;
}
// S2 -= S5
if ((e = mp_sub(&w2, &w5, &w2)) != MP_OKAY) {
goto ERR;
}
// S4 -= S9
if ((e = mp_sub(&w4, &w9, &w4)) != MP_OKAY) {
goto ERR;
}
// S4 -= (2^16*S1)
if ((e = mp_mul_2d(&w1, 16, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&w4, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
// S8 -= S3
if ((e = mp_sub(&w8, &w3, &w8)) != MP_OKAY) {
goto ERR;
}
// S6 /= 2
if ((e = mp_div_2d(&w6, 1, &w6, NULL)) != MP_OKAY) {
goto ERR;
}
// S5 *= 2
if ((e = mp_mul_2d(&w5, 1, &w5)) != MP_OKAY) {
goto ERR;
}
// S5 += S2
if ((e = mp_add(&w5, &w2, &w5)) != MP_OKAY) {
goto ERR;
}
// S2 = -S2
if ((e = mp_neg(&w2, &w2)) != MP_OKAY) {
goto ERR;
}
// S8 = -S8
if ((e = mp_neg(&w8, &w8)) != MP_OKAY) {
goto ERR;
}
// S7 += S6
if ((e = mp_add(&w7, &w6, &w7)) != MP_OKAY) {
goto ERR;
}
// S6 = -S6
if ((e = mp_neg(&w6, &w6)) != MP_OKAY) {
goto ERR;
}
// S3 -= S7
if ((e = mp_sub(&w3, &w7, &w3)) != MP_OKAY) {
goto ERR;
}
// S5 -= (512*S7)
if ((e = mp_mul_2d(&w7, 9, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&w5, &tmp1, &w5)) != MP_OKAY) {
goto ERR;
}
// S3 *= 2
if ((e = mp_mul_2d(&w3, 1, &w3)) != MP_OKAY) {
goto ERR;
}
// S3 -= S8
if ((e = mp_sub(&w3, &w8, &w3)) != MP_OKAY) {
goto ERR;
}
// S7 -= S1
if ((e = mp_sub(&w7, &w1, &w7)) != MP_OKAY) {
goto ERR;
}
// S7 -= S9
if ((e = mp_sub(&w7, &w9, &w7)) != MP_OKAY) {
goto ERR;
}
// S8 += S2
if ((e = mp_add(&w8, &w2, &w8)) != MP_OKAY) {
goto ERR;
}
// S5 += S3
if ((e = mp_add(&w5, &w3, &w5)) != MP_OKAY) {
goto ERR;
}
// S8 -= (80*S6)
if ((e = mp_mul_d(&w6, 80, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&w8, &tmp1, &w8)) != MP_OKAY) {
goto ERR;
}
// S3 -= (510*S9)
if ((e = mp_mul_d(&w9, 510, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&w3, &tmp1, &w3)) != MP_OKAY) {
goto ERR;
}
// S4 -= S2
if ((e = mp_sub(&w4, &w2, &w4)) != MP_OKAY) {
goto ERR;
}
// S3 *= 3
if ((e = mp_mul_d(&w3, 3, &w3)) != MP_OKAY) {
goto ERR;
}
// S3 += S5
if ((e = mp_add(&w3, &w5, &w3)) != MP_OKAY) {
goto ERR;
}
// S8 /= 180 \\ division by 180
if ((e = mp_div_d(&w8, 180, &w8, NULL)) != MP_OKAY) {
goto ERR;
}
// S5 += (378*S7)
if ((e = mp_mul_d(&w7, 378, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w5, &tmp1, &w5)) != MP_OKAY) {
goto ERR;
}
// S2 /= 4
if ((e = mp_div_2d(&w2, 2, &w2, NULL)) != MP_OKAY) {
goto ERR;
}
// S6 -= S2
if ((e = mp_sub(&w6, &w2, &w6)) != MP_OKAY) {
goto ERR;
}
// S5 /= (-72) \\ division by -72
if ((e = mp_div_d(&w5, 72, &w5, NULL)) != MP_OKAY) {
goto ERR;
}
if (&w5.sign == MP_ZPOS)
(&w5)->sign = MP_NEG;
(&w5)->sign = MP_ZPOS;
// S3 /= (-360) \\ division by -360
if ((e = mp_div_d(&w3, 360, &w3, NULL)) != MP_OKAY) {
goto ERR;
}
if (&w3.sign == MP_ZPOS)
(&w3)->sign = MP_NEG;
(&w3)->sign = MP_ZPOS;
// S2 -= S8
if ((e = mp_sub(&w2, &w8, &w2)) != MP_OKAY) {
goto ERR;
}
// S7 -= S3
if ((e = mp_sub(&w7, &w3, &w7)) != MP_OKAY) {
goto ERR;
}
// S4 -= (256*S5)
if ((e = mp_mul_2d(&w5, 8, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&w4, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
// S3 -= S5
if ((e = mp_sub(&w3, &w5, &w3)) != MP_OKAY) {
goto ERR;
}
// S4 -= (4096*S3)
if ((e = mp_mul_2d(&w3, 12, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&w4, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
// S4 -= (16*S7)
if ((e = mp_mul_2d(&w7, 4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_sub(&w4, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
// S4 += (256*S6)
if ((e = mp_mul_2d(&w6, 8, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w4, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
// S6 += S2
if ((e = mp_add(&w6, &w2, &w6)) != MP_OKAY) {
goto ERR;
}
// S2 *= 180
if ((e = mp_mul_d(&w2, 180, &w2)) != MP_OKAY) {
goto ERR;
}
// S2 += S4
if ((e = mp_add(&w2, &w4, &w2)) != MP_OKAY) {
goto ERR;
}
// S2 /= 11340 \\ division by 11340
if ((e = mp_div_d(&w2, 11340, &w2, NULL)) != MP_OKAY) {
goto ERR;
}
// S4 += (720*S6)
if ((e = mp_mul_d(&w6, 720, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&w4, &tmp1, &w4)) != MP_OKAY) {
goto ERR;
}
// S4 /= (-2160) \\ division by -2160
if ((e = mp_div_d(&w4, 2160, &w4, NULL)) != MP_OKAY) {
goto ERR;
}
if (&w4.sign == MP_ZPOS)
(&w4)->sign = MP_NEG;
(&w4)->sign = MP_ZPOS;
// S6 -= S4
if ((e = mp_sub(&w6, &w4, &w6)) != MP_OKAY) {
goto ERR;
}
// S8 -= S2
if ((e = mp_sub(&w8, &w2, &w8)) != MP_OKAY) {
goto ERR;
}
// P = S1*x^8 + S2*x^7 + S3*x^6 + S4*x^5 + S5*x^4 + S6*x^3 + S7*x^2 + S8*x + S9
if ((e = mp_copy(&w9, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_lshd(&w8, B)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &w8, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_lshd(&w7, 2 * B)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &w7, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_lshd(&w6, 3 * B)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &w6, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_lshd(&w5, 4 * B)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &w5, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_lshd(&w4, 5 * B)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &w4, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_lshd(&w3, 6 * B)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &w3, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_lshd(&w2, 7 * B)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &w2, &tmp1)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_lshd(&w1, 8 * B)) != MP_OKAY) {
goto ERR;
}
if ((e = mp_add(&tmp1, &w1, c)) != MP_OKAY) {
goto ERR;
}
// P - A*B \\ == zero
c->sign = sign;
ERR:
ERRb4:
mp_clear(&b4);
ERRb3:
mp_clear(&b3);
ERRb2:
mp_clear(&b2);
ERRb1:
mp_clear(&b1);
ERRb0:
mp_clear(&b0);
ERRa4:
mp_clear(&a4);
ERRa3:
mp_clear(&a3);
ERRa2:
mp_clear(&a2);
ERRa1:
mp_clear(&a1);
ERRa0:
mp_clear(&a0);
ERR0:
mp_clear_multi(&w1, &w2, &w3, &w4, &w5, &w6, &w7, &w8, &w9, &tmp1, &tmp2,
// &a0, &a1, &a2, &a3, &a4, &b0, &b1, &b2, &b3, &b4,
NULL);
return e;
}
term_t bin2term(apr_byte_t **data, int *bytes_left, atoms_t *atoms, heap_t *heap)
{
#define require(__n) \
do { \
if (*bytes_left < __n) \
return noval; \
(*bytes_left) -= __n; \
} while (0)
#define get_byte() (*(*data)++)
require(1);
switch (get_byte())
{
case 97:
{
require(1);
return tag_int(get_byte());
}
case 98:
{
int a, b, c, d;
require(4);
a = get_byte();
b = get_byte();
c = get_byte();
d = get_byte();
return int_to_term((a << 24) | (b << 16) | (c << 8) | d, heap);
}
case 99:
{
double value;
require(31);
sscanf((const char *)*data, "%lf", &value);
(*data) += 31;
return heap_float(heap, value);
}
case 100:
{
int a, b;
int len;
cstr_t *s;
int index;
require(2);
a = get_byte();
b = get_byte();
len = ((a << 8) | b);
if (len > 255)
return noval;
require(len);
s = (cstr_t *)heap_alloc(heap, sizeof(cstr_t) + len);
s->size = len;
memcpy(s->data, *data, len);
index = atoms_set(atoms, s);
(*data) += len;
return tag_atom(index);
}
case 104:
{
int arity, i;
term_t tuple;
term_box_t *tbox;
require(1);
arity = get_byte();
tuple = heap_tuple(heap, arity);
tbox = peel(tuple);
for (i = 0; i < arity; i++)
{
term_t e = bin2term(data, bytes_left, atoms, heap);
if (e == noval)
return noval;
tbox->tuple.elts[i] = e;
}
return tuple;
}
case 105:
{
int a, b, c, d;
int arity, i;
term_t tuple;
term_box_t *tbox;
require(4);
a = get_byte();
b = get_byte();
c = get_byte();
d = get_byte();
arity = ((a << 24) | (b << 16) | (c << 8) | d);
tuple = heap_tuple(heap, arity);
tbox = peel(tuple);
for (i = 0; i < arity; i++)
{
term_t e = bin2term(data, bytes_left, atoms, heap);
if (e == noval)
return noval;
tbox->tuple.elts[i] = e;
}
return tuple;
}
case 106:
{
return nil;
}
case 107:
{
int a, b;
int len, i;
term_t cons = nil;
require(2);
a = get_byte();
b = get_byte();
len = ((a << 8) | b);
require(len);
i = len-1;
while (i >= 0)
cons = heap_cons2(heap, tag_int((*data)[i--]), cons);
(*data) += len;
return cons;
}
case 108:
{
int a, b, c, d;
int len, i;
term_t *es;
term_t tail;
require(4);
a = get_byte();
b = get_byte();
c = get_byte();
d = get_byte();
len = ((a << 24) | (b << 16) | (c << 8) | d);
es = (term_t *)heap_alloc(heap, len*sizeof(term_t));
for (i = 0; i < len; i++)
{
term_t e = bin2term(data, bytes_left, atoms, heap);
if (e == noval)
return noval;
es[i] = e;
}
tail = bin2term(data, bytes_left, atoms, heap);
if (tail == noval)
return noval;
i = len-1;
while (i >= 0)
tail = heap_cons2(heap, es[i--], tail);
return tail;
}
case 109:
{
int a, b, c, d;
int len;
term_t bin;
require(4);
a = get_byte();
b = get_byte();
c = get_byte();
d = get_byte();
len = ((a << 24) | (b << 16) | (c << 8) | d);
require(len);
bin = heap_binary(heap, len*8, (*data));
(*data) += len;
return bin;
}
case 110:
{
int len;
int sign;
mp_size prec;
mp_int mp;
mp_err rs;
require(1);
len = get_byte();
sign = get_byte();
require(len);
prec = (len + (MP_DIGIT_SIZE-1)) / MP_DIGIT_SIZE;
mp_init_size(&mp, prec, heap);
//TODO: use mp_read_signed_bin
rs = mp_read_unsigned_bin_lsb(&mp, *data, len, heap);
if (rs != MP_OKAY)
return noval;
(*data) += len;
if (sign == 1)
mp_neg(&mp, &mp, heap);
return mp_to_term(mp);
}
case 111:
{
int a, b, c, d;
int len;
int sign;
mp_size prec;
mp_int mp;
mp_err rs;
require(4);
a = get_byte();
b = get_byte();
c = get_byte();
d = get_byte();
len = ((a << 24) | (b << 16) | (c << 8) | d);
require(1);
sign = get_byte();
require(len);
prec = (len + (MP_DIGIT_SIZE-1)) / MP_DIGIT_SIZE;
mp_init_size(&mp, prec, heap);
rs = mp_read_unsigned_bin_lsb(&mp, *data, len, heap);
if (rs != MP_OKAY)
return noval;
(*data) += len;
if (sign == 1)
mp_neg(&mp, &mp, heap);
return mp_to_term(mp);
}
default:
return noval; // only a subset of tags are supported; inspired by BERT
}
}
Integer* Integer::from_cstr(STATE, const char* str, const char* end,
int base, Object* strict)
{
if(base == 1 || base > 36) return nil<Integer>();
// Skip any combination of leading whitespace and underscores. Leading
// whitespace is OK in strict mode, but underscores are not.
while(isspace(*str) || *str == '_') {
if(*str == '_') {
if(CBOOL(strict)) {
return nil<Integer>();
} else {
return Fixnum::from(0);
}
}
str++;
}
bool negative = false;
if(*str == '-') {
str++;
negative = true;
} else if(*str == '+') {
str++;
}
int detected_base = 0;
const char* str_start = str;
/* Try to detect a base prefix. We have to do this even though we might
* have been told the base, we have to know if we should discard the bytes
* that make up the prefix if it's redundant with the passed in base.
*
* For example, if base == 16 and str == "0xa", we return 10. But if base
* == 10 and str == "0xa", we fail because we rewind and try to process 0x
* as part of the base 10 string.
*/
if(*str == '0') {
str++;
switch(*str++) {
case 'b': case 'B':
detected_base = 2;
break;
case 'o': case 'O':
detected_base = 8;
break;
case 'd': case 'D':
detected_base = 10;
break;
case 'x': case 'X':
detected_base = 16;
break;
default:
// If passed "017" and a base of 0, that is octal 15. Otherwise, it
// is whatever those digits would be in the specified base.
str--;
detected_base = 8;
}
}
// If base is less than 0, then it's just a hint for how to process it
// if there is no base detected.
if(base < 0) {
if(detected_base == 0) {
// Ok, no detected because, use the base hint and start over.
base = -base;
str = str_start;
} else {
base = detected_base;
}
// If 0 was passed in as the base, we use the detected base.
} else if(base == 0) {
// Default to 10 if there is no input and no detected base.
if(detected_base == 0) {
base = 10;
str = str_start;
} else {
base = detected_base;
}
// If the passed in base and the detected base contradict each other, then
// rewind and process the whole string as digits of the passed in base.
} else if(base != detected_base) {
// Rewind the stream and try and consume the prefix as digits in the
// number.
str = str_start;
}
int max_digits = DIGIT_BIT / digit_bits[base];
int count = 0;
int digit = 0;
mp_digit shift = base, value = 0;
mp_int a = { 0, 0, 0, 0, 0, };
for( ; str < end; str++) {
digit = digit_value[int(*str)];
if(digit >= 0 && digit < base) {
if(++count <= max_digits) {
value = value * base + digit;
} else {
if(!mp_isinitialized(&a)) {
mp_init_set_long(XST, &a, value);
for(int i = 0; i < max_digits - 1; i++) {
shift *= base;
}
} else {
mp_mul_d(XST, &a, shift, &a);
mp_add_d(XST, &a, value, &a);
}
value = digit;
count = 1;
}
continue;
}
// An underscore is valid iff it is followed by a valid character for
// this base.
if(*str == '_') {
if(!*(str + 1) || *(str + 1) == '_') goto error_check;
continue;
}
if(digit >= base) goto error_check;
// Consume any whitespace characters.
if(digit < -1) {
while(digit_value[int(*++str)] < -1) /* skip whitespace */ ;
goto error_check;
}
// Done parsing.
break;
}
error_check:
if(str < end && CBOOL(strict)) {
if(mp_isinitialized(&a)) mp_clear(&a);
return nil<Integer>();
}
if(!mp_isinitialized(&a)) {
if(value < FIXNUM_MAX) {
Fixnum* result = Fixnum::from(value);
if(negative) {
return result->neg(state);
} else {
return result;
}
}
mp_init_set_long(XST, &a, value);
} else {
shift = base;
for(int i = 0; i < count - 1; i++) {
shift *= base;
}
mp_mul_d(XST, &a, shift, &a);
mp_add_d(XST, &a, value, &a);
}
if(negative) {
mp_neg(XST, &a, &a);
}
Integer* result = Bignum::from(state, &a);
mp_clear(&a);
return result;
}
/* Computes R = nP based on IEEE P1363 A.10.3. Elliptic curve points P and
* R can be identical. Uses affine coordinates. Assumes input is already
* field-encoded using field_enc, and returns output that is still
* field-encoded. */
mp_err
ec_GFp_pt_mul_aff(const mp_int *n, const mp_int *px, const mp_int *py,
mp_int *rx, mp_int *ry, const ECGroup *group)
{
mp_err res = MP_OKAY;
mp_int k, k3, qx, qy, sx, sy;
int b1, b3, i, l;
MP_DIGITS(&k) = 0;
MP_DIGITS(&k3) = 0;
MP_DIGITS(&qx) = 0;
MP_DIGITS(&qy) = 0;
MP_DIGITS(&sx) = 0;
MP_DIGITS(&sy) = 0;
MP_CHECKOK(mp_init(&k));
MP_CHECKOK(mp_init(&k3));
MP_CHECKOK(mp_init(&qx));
MP_CHECKOK(mp_init(&qy));
MP_CHECKOK(mp_init(&sx));
MP_CHECKOK(mp_init(&sy));
/* if n = 0 then r = inf */
if (mp_cmp_z(n) == 0) {
mp_zero(rx);
mp_zero(ry);
res = MP_OKAY;
goto CLEANUP;
}
/* Q = P, k = n */
MP_CHECKOK(mp_copy(px, &qx));
MP_CHECKOK(mp_copy(py, &qy));
MP_CHECKOK(mp_copy(n, &k));
/* if n < 0 then Q = -Q, k = -k */
if (mp_cmp_z(n) < 0) {
MP_CHECKOK(group->meth->field_neg(&qy, &qy, group->meth));
MP_CHECKOK(mp_neg(&k, &k));
}
#ifdef ECL_DEBUG /* basic double and add method */
l = mpl_significant_bits(&k) - 1;
MP_CHECKOK(mp_copy(&qx, &sx));
MP_CHECKOK(mp_copy(&qy, &sy));
for (i = l - 1; i >= 0; i--) {
/* S = 2S */
MP_CHECKOK(group->point_dbl(&sx, &sy, &sx, &sy, group));
/* if k_i = 1, then S = S + Q */
if (mpl_get_bit(&k, i) != 0) {
MP_CHECKOK(group->point_add(&sx, &sy, &qx, &qy, &sx, &sy, group));
}
}
#else /* double and add/subtract method from \
* standard */
/* k3 = 3 * k */
MP_CHECKOK(mp_set_int(&k3, 3));
MP_CHECKOK(mp_mul(&k, &k3, &k3));
/* S = Q */
MP_CHECKOK(mp_copy(&qx, &sx));
MP_CHECKOK(mp_copy(&qy, &sy));
/* l = index of high order bit in binary representation of 3*k */
l = mpl_significant_bits(&k3) - 1;
/* for i = l-1 downto 1 */
for (i = l - 1; i >= 1; i--) {
/* S = 2S */
MP_CHECKOK(group->point_dbl(&sx, &sy, &sx, &sy, group));
b3 = MP_GET_BIT(&k3, i);
b1 = MP_GET_BIT(&k, i);
/* if k3_i = 1 and k_i = 0, then S = S + Q */
if ((b3 == 1) && (b1 == 0)) {
MP_CHECKOK(group->point_add(&sx, &sy, &qx, &qy, &sx, &sy, group));
/* if k3_i = 0 and k_i = 1, then S = S - Q */
} else if ((b3 == 0) && (b1 == 1)) {
MP_CHECKOK(group->point_sub(&sx, &sy, &qx, &qy, &sx, &sy, group));
}
}
#endif
/* output S */
MP_CHECKOK(mp_copy(&sx, rx));
MP_CHECKOK(mp_copy(&sy, ry));
CLEANUP:
mp_clear(&k);
mp_clear(&k3);
mp_clear(&qx);
mp_clear(&qy);
mp_clear(&sx);
mp_clear(&sy);
return res;
}
