void fmpz_fib_ui(fmpz_t f, ulong n)
{
if (n < NUM_SMALL_FIB)
fmpz_set_ui(f, small_fib[n]);
else
mpz_fib_ui(_fmpz_promote(f), n);
}
RCP<const Integer> fibonacci(unsigned long n)
{
mpz_class f;
mpz_fib_ui(f.get_mpz_t(), n);
return integer(f);
}
int main()
{
mpz_t f;
mpz_init(f);
mpz_fib_ui(f, 1073741825);
print_state(&f, 1073741825);
return 0;
}
static int
mixed (void)
{
int n1;
int n2;
int i = 121;
#ifndef NPRINTF_L
long double d = 1. / 31.;
#endif
mpf_t mpf;
mpq_t mpq;
mpz_t mpz;
mpfr_t x;
mpfr_rnd_t rnd;
mpf_init (mpf);
mpf_set_ui (mpf, 40);
mpf_div_ui (mpf, mpf, 31); /* mpf = 40.0 / 31.0 */
mpq_init (mpq);
mpq_set_ui (mpq, 123456, 4567890);
mpz_init (mpz);
mpz_fib_ui (mpz, 64);
mpfr_init (x);
mpfr_set_str (x, "-12345678.875", 10, MPFR_RNDN);
rnd = MPFR_RNDD;
check_vsprintf ("121%", "%i%%", i);
check_vsprintf ("121% -1.2345678875E+07", "%i%% %RNE", i, x);
check_vsprintf ("121, -12345679", "%i, %.0Rf", i, x);
check_vsprintf ("10610209857723, -1.2345678875e+07", "%Zi, %R*e", mpz, rnd,
x);
check_vsprintf ("-12345678.9, 121", "%.1Rf, %i", x, i);
check_vsprintf ("-12345678, 1e240/45b352", "%.0R*f, %Qx", MPFR_RNDZ, x, mpq);
n1 = check_vsprintf ("121, -12345678.875000000000, 1.290323", "%i, %.*Rf, %Ff%n",
i, 12, x, mpf, &n2);
if (n1 != n2)
{
printf ("error in number of characters written by mpfr_vsprintf\n");
printf ("expected: %d\n", n2);
printf (" got: %d\n", n1);
exit (1);
}
#ifndef NPRINTF_L
check_vsprintf ("00000010610209857723, -1.2345678875e+07, 0.032258",
"%.*Zi, %R*e, %Lf", 20, mpz, rnd, x, d);
#endif
mpf_clear (mpf);
mpq_clear (mpq);
mpz_clear (mpz);
mpfr_clear (x);
return 0;
}
// Courtesy of http://oeis.org/A007805
int main() {
mpz_class sum = 0;
for (int n = 1; n <= 12; ++n) {
mpz_class l;
mpz_fib_ui(l.get_mpz_t(), 6 * n + 3);
sum += l / 2;
}
std::cout << sum << "\n";
return 0;
}
static PyObject *
GMPy_MPZ_Function_Fib(PyObject *self, PyObject *other)
{
MPZ_Object *result = NULL;
unsigned long n;
n = c_ulong_From_Integer(other);
if (n == (unsigned long)(-1) && PyErr_Occurred()) {
return NULL;
}
if ((result = GMPy_MPZ_New(NULL))) {
mpz_fib_ui(result->z, n);
}
return (PyObject*)result;
}
int main(int argc, char* argv[]) {
mpz_t n;
char* s;
unsigned long int i;
mpz_init(n);
i = 0;
while(1) {
mpz_fib_ui(n, ++i);
s = mpz_get_str(NULL, 10, n);
if (strlen(s) >= 1000) {
break;
}
free(s);
}
mpz_clear(n);
printf("%lu\n", i);
return 0;
}
/* Evaluate the expression E and put the result in R. */
void
mpz_eval_expr (mpz_ptr r, expr_t e)
{
mpz_t lhs, rhs;
switch (e->op)
{
case LIT:
mpz_set (r, e->operands.val);
return;
case PLUS:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_add (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
case MINUS:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_sub (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
case MULT:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_mul (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
case DIV:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_fdiv_q (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
case MOD:
mpz_init (rhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_abs (rhs, rhs);
mpz_eval_mod_expr (r, e->operands.ops.lhs, rhs);
mpz_clear (rhs);
return;
case REM:
/* Check if lhs operand is POW expression and optimize for that case. */
if (e->operands.ops.lhs->op == POW)
{
mpz_t powlhs, powrhs;
mpz_init (powlhs);
mpz_init (powrhs);
mpz_init (rhs);
mpz_eval_expr (powlhs, e->operands.ops.lhs->operands.ops.lhs);
mpz_eval_expr (powrhs, e->operands.ops.lhs->operands.ops.rhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_powm (r, powlhs, powrhs, rhs);
if (mpz_cmp_si (rhs, 0L) < 0)
mpz_neg (r, r);
mpz_clear (powlhs);
mpz_clear (powrhs);
mpz_clear (rhs);
return;
}
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_fdiv_r (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
#if __GNU_MP_VERSION >= 2
case INVMOD:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_invert (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
#endif
case POW:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
if (mpz_cmpabs_ui (lhs, 1) <= 0)
{
/* For 0^rhs and 1^rhs, we just need to verify that
rhs is well-defined. For (-1)^rhs we need to
determine (rhs mod 2). For simplicity, compute
(rhs mod 2) for all three cases. */
expr_t two, et;
two = malloc (sizeof (struct expr));
two -> op = LIT;
mpz_init_set_ui (two->operands.val, 2L);
makeexp (&et, MOD, e->operands.ops.rhs, two);
e->operands.ops.rhs = et;
}
mpz_eval_expr (rhs, e->operands.ops.rhs);
if (mpz_cmp_si (rhs, 0L) == 0)
/* x^0 is 1 */
mpz_set_ui (r, 1L);
else if (mpz_cmp_si (lhs, 0L) == 0)
/* 0^y (where y != 0) is 0 */
mpz_set_ui (r, 0L);
else if (mpz_cmp_ui (lhs, 1L) == 0)
/* 1^y is 1 */
mpz_set_ui (r, 1L);
else if (mpz_cmp_si (lhs, -1L) == 0)
/* (-1)^y just depends on whether y is even or odd */
mpz_set_si (r, (mpz_get_ui (rhs) & 1) ? -1L : 1L);
else if (mpz_cmp_si (rhs, 0L) < 0)
/* x^(-n) is 0 */
mpz_set_ui (r, 0L);
else
{
unsigned long int cnt;
unsigned long int y;
/* error if exponent does not fit into an unsigned long int. */
if (mpz_cmp_ui (rhs, ~(unsigned long int) 0) > 0)
goto pow_err;
y = mpz_get_ui (rhs);
/* x^y == (x/(2^c))^y * 2^(c*y) */
#if __GNU_MP_VERSION >= 2
cnt = mpz_scan1 (lhs, 0);
#else
cnt = 0;
#endif
if (cnt != 0)
{
if (y * cnt / cnt != y)
goto pow_err;
mpz_tdiv_q_2exp (lhs, lhs, cnt);
mpz_pow_ui (r, lhs, y);
mpz_mul_2exp (r, r, y * cnt);
}
else
mpz_pow_ui (r, lhs, y);
}
mpz_clear (lhs); mpz_clear (rhs);
return;
pow_err:
error = "result of `pow' operator too large";
mpz_clear (lhs); mpz_clear (rhs);
longjmp (errjmpbuf, 1);
case GCD:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_gcd (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
#if __GNU_MP_VERSION > 2 || __GNU_MP_VERSION_MINOR >= 1
case LCM:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_lcm (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
#endif
case AND:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_and (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
case IOR:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_ior (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
#if __GNU_MP_VERSION > 2 || __GNU_MP_VERSION_MINOR >= 1
case XOR:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
mpz_xor (r, lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
return;
#endif
case NEG:
mpz_eval_expr (r, e->operands.ops.lhs);
mpz_neg (r, r);
return;
case NOT:
mpz_eval_expr (r, e->operands.ops.lhs);
mpz_com (r, r);
return;
case SQRT:
mpz_init (lhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
if (mpz_sgn (lhs) < 0)
{
error = "cannot take square root of negative numbers";
mpz_clear (lhs);
longjmp (errjmpbuf, 1);
}
mpz_sqrt (r, lhs);
return;
#if __GNU_MP_VERSION > 2 || __GNU_MP_VERSION_MINOR >= 1
case ROOT:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
if (mpz_sgn (rhs) <= 0)
{
error = "cannot take non-positive root orders";
mpz_clear (lhs); mpz_clear (rhs);
longjmp (errjmpbuf, 1);
}
if (mpz_sgn (lhs) < 0 && (mpz_get_ui (rhs) & 1) == 0)
{
error = "cannot take even root orders of negative numbers";
mpz_clear (lhs); mpz_clear (rhs);
longjmp (errjmpbuf, 1);
}
{
unsigned long int nth = mpz_get_ui (rhs);
if (mpz_cmp_ui (rhs, ~(unsigned long int) 0) > 0)
{
/* If we are asked to take an awfully large root order, cheat and
ask for the largest order we can pass to mpz_root. This saves
some error prone special cases. */
nth = ~(unsigned long int) 0;
}
mpz_root (r, lhs, nth);
}
mpz_clear (lhs); mpz_clear (rhs);
return;
#endif
case FAC:
mpz_eval_expr (r, e->operands.ops.lhs);
if (mpz_size (r) > 1)
{
error = "result of `!' operator too large";
longjmp (errjmpbuf, 1);
}
mpz_fac_ui (r, mpz_get_ui (r));
return;
#if __GNU_MP_VERSION >= 2
case POPCNT:
mpz_eval_expr (r, e->operands.ops.lhs);
{ long int cnt;
cnt = mpz_popcount (r);
mpz_set_si (r, cnt);
}
return;
case HAMDIST:
{ long int cnt;
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
cnt = mpz_hamdist (lhs, rhs);
mpz_clear (lhs); mpz_clear (rhs);
mpz_set_si (r, cnt);
}
return;
#endif
case LOG2:
mpz_eval_expr (r, e->operands.ops.lhs);
{ unsigned long int cnt;
if (mpz_sgn (r) <= 0)
{
error = "logarithm of non-positive number";
longjmp (errjmpbuf, 1);
}
cnt = mpz_sizeinbase (r, 2);
mpz_set_ui (r, cnt - 1);
}
return;
case LOG:
{ unsigned long int cnt;
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
if (mpz_sgn (lhs) <= 0)
{
error = "logarithm of non-positive number";
mpz_clear (lhs); mpz_clear (rhs);
longjmp (errjmpbuf, 1);
}
if (mpz_cmp_ui (rhs, 256) >= 0)
{
error = "logarithm base too large";
mpz_clear (lhs); mpz_clear (rhs);
longjmp (errjmpbuf, 1);
}
cnt = mpz_sizeinbase (lhs, mpz_get_ui (rhs));
mpz_set_ui (r, cnt - 1);
mpz_clear (lhs); mpz_clear (rhs);
}
return;
case FERMAT:
{
unsigned long int t;
mpz_init (lhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
t = (unsigned long int) 1 << mpz_get_ui (lhs);
if (mpz_cmp_ui (lhs, ~(unsigned long int) 0) > 0 || t == 0)
{
error = "too large Mersenne number index";
mpz_clear (lhs);
longjmp (errjmpbuf, 1);
}
mpz_set_ui (r, 1);
mpz_mul_2exp (r, r, t);
mpz_add_ui (r, r, 1);
mpz_clear (lhs);
}
return;
case MERSENNE:
mpz_init (lhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
if (mpz_cmp_ui (lhs, ~(unsigned long int) 0) > 0)
{
error = "too large Mersenne number index";
mpz_clear (lhs);
longjmp (errjmpbuf, 1);
}
mpz_set_ui (r, 1);
mpz_mul_2exp (r, r, mpz_get_ui (lhs));
mpz_sub_ui (r, r, 1);
mpz_clear (lhs);
return;
case FIBONACCI:
{ mpz_t t;
unsigned long int n, i;
mpz_init (lhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
if (mpz_sgn (lhs) <= 0 || mpz_cmp_si (lhs, 1000000000) > 0)
{
error = "Fibonacci index out of range";
mpz_clear (lhs);
longjmp (errjmpbuf, 1);
}
n = mpz_get_ui (lhs);
mpz_clear (lhs);
#if __GNU_MP_VERSION > 2 || __GNU_MP_VERSION_MINOR >= 1
mpz_fib_ui (r, n);
#else
mpz_init_set_ui (t, 1);
mpz_set_ui (r, 1);
if (n <= 2)
mpz_set_ui (r, 1);
else
{
for (i = 3; i <= n; i++)
{
mpz_add (t, t, r);
mpz_swap (t, r);
}
}
mpz_clear (t);
#endif
}
return;
case RANDOM:
{
unsigned long int n;
mpz_init (lhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
if (mpz_sgn (lhs) <= 0 || mpz_cmp_si (lhs, 1000000000) > 0)
{
error = "random number size out of range";
mpz_clear (lhs);
longjmp (errjmpbuf, 1);
}
n = mpz_get_ui (lhs);
mpz_clear (lhs);
mpz_urandomb (r, rstate, n);
}
return;
case NEXTPRIME:
{
mpz_eval_expr (r, e->operands.ops.lhs);
mpz_nextprime (r, r);
}
return;
case BINOM:
mpz_init (lhs); mpz_init (rhs);
mpz_eval_expr (lhs, e->operands.ops.lhs);
mpz_eval_expr (rhs, e->operands.ops.rhs);
{
unsigned long int k;
if (mpz_cmp_ui (rhs, ~(unsigned long int) 0) > 0)
{
error = "k too large in (n over k) expression";
mpz_clear (lhs); mpz_clear (rhs);
longjmp (errjmpbuf, 1);
}
k = mpz_get_ui (rhs);
mpz_bin_ui (r, lhs, k);
}
mpz_clear (lhs); mpz_clear (rhs);
return;
case TIMING:
{
int t0;
t0 = cputime ();
mpz_eval_expr (r, e->operands.ops.lhs);
printf ("time: %d\n", cputime () - t0);
}
return;
default:
abort ();
}
}
int
main (int argc, char *argv[])
{
unsigned long n;
unsigned long limit = 100 * BITS_PER_MP_LIMB;
mpz_t want_fn, want_fn1, got_fn, got_fn1;
tests_start ();
mp_trace_base = -16;
if (argc > 1 && argv[1][0] == 'x')
limit = ULONG_MAX;
else if (argc > 1)
limit = atoi (argv[1]);
check_fib_table ();
/* start at n==0 */
mpz_init_set_ui (want_fn1, 1); /* F[-1] */
mpz_init_set_ui (want_fn, 0); /* F[0] */
mpz_init (got_fn);
mpz_init (got_fn1);
for (n = 0; n < limit; n++)
{
/* check our float formula seems right */
if (MPZ_FIB_SIZE_FLOAT (n) < SIZ(want_fn))
{
printf ("MPZ_FIB_SIZE_FLOAT wrong at n=%lu\n", n);
printf (" MPZ_FIB_SIZE_FLOAT %ld\n", MPZ_FIB_SIZE_FLOAT (n));
printf (" SIZ(want_fn) %d\n", SIZ(want_fn));
abort ();
}
/* check MPN_FIB2_SIZE seems right, compared to actual size and
compared to our float formula */
if (MPN_FIB2_SIZE (n) < MPZ_FIB_SIZE_FLOAT (n))
{
printf ("MPN_FIB2_SIZE wrong at n=%lu\n", n);
printf (" MPN_FIB2_SIZE %ld\n", MPN_FIB2_SIZE (n));
printf (" MPZ_FIB_SIZE_FLOAT %ld\n", MPZ_FIB_SIZE_FLOAT (n));
abort ();
}
if (MPN_FIB2_SIZE (n) < SIZ(want_fn))
{
printf ("MPN_FIB2_SIZE wrong at n=%lu\n", n);
printf (" MPN_FIB2_SIZE %ld\n", MPN_FIB2_SIZE (n));
printf (" SIZ(want_fn) %d\n", SIZ(want_fn));
abort ();
}
mpz_fib2_ui (got_fn, got_fn1, n);
MPZ_CHECK_FORMAT (got_fn);
MPZ_CHECK_FORMAT (got_fn1);
if (mpz_cmp (got_fn, want_fn) != 0 || mpz_cmp (got_fn1, want_fn1) != 0)
{
printf ("mpz_fib2_ui(%lu) wrong\n", n);
mpz_trace ("want fn ", want_fn);
mpz_trace ("got fn ", got_fn);
mpz_trace ("want fn1", want_fn1);
mpz_trace ("got fn1", got_fn1);
abort ();
}
mpz_fib_ui (got_fn, n);
MPZ_CHECK_FORMAT (got_fn);
if (mpz_cmp (got_fn, want_fn) != 0)
{
printf ("mpz_fib_ui(%lu) wrong\n", n);
mpz_trace ("want fn", want_fn);
mpz_trace ("got fn", got_fn);
abort ();
}
mpz_add (want_fn1, want_fn1, want_fn); /* F[n+1] = F[n] + F[n-1] */
mpz_swap (want_fn1, want_fn);
}
mpz_clear (want_fn);
mpz_clear (want_fn1);
mpz_clear (got_fn);
mpz_clear (got_fn1);
tests_end ();
exit (0);
}