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First cut at moving the code over to C++11.

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This commit is contained in:
Cotton Seed 2012-07-27 15:37:47 -04:00
parent 50a2438996
commit fdb87caa41
36 changed files with 982 additions and 486 deletions
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9
Makefile
View File

@ -2,12 +2,13 @@
BISON = /opt/local/bin/bison
FLEX = /opt/local/bin/flex
CXX = g++
# CXX = g++
CXX = clang++ -fno-color-diagnostics --stdlib=libc++ --std=c++11
INCLUDES = -I/opt/local/include -I.
# OPTFLAGS = -g
OPTFLAGS = -O2 -g
OPTFLAGS = -g
# OPTFLAGS = -O2 -g
# OPTFLAGS = -O2 -DNDEBUG
LDFLAGS = -L/opt/local/lib
@ -38,7 +39,7 @@ ALGEBRA_HEADERS = algebra/algebra.h algebra/grading.h algebra/module.h \
KNOTKIT_HEADERS = knotkit.h planar_diagram.h dt_code.h knot_diagram.h \
smoothing.h cobordism.h cube.h spanning_tree_complex.h cube_impl.h sseq.h
LIBS = -lgmp
LIBS = -lgmp -lz
all: gss

14
algebra/Q.h
View File

@ -31,16 +31,16 @@ class Q
Q_impl (reader &r)
{
mpq_init (x);
mpz_inp_raw (mpq_numref (x), r.fp);
mpz_inp_raw (mpq_denref (x), r.fp);
r.read_mpz (mpq_numref (x));
r.read_mpz (mpq_denref (x));
}
~Q_impl () { mpq_clear (x); }
void write_self (writer &w) const
{
mpz_out_raw (w.fp, mpq_numref (x));
mpz_out_raw (w.fp, mpq_denref (x));
w.write_mpz (mpq_numref (x));
w.write_mpz (mpq_denref (x));
}
};
@ -163,12 +163,12 @@ class Q
Q div (const Q &d) const { return operator / (d); }
triple<Q, Q, Q> extended_gcd (const Q &q) const
tuple<Q, Q, Q> extended_gcd (const Q &q) const
{
if (*this != 0)
return triple<Q, Q, Q> (*this, 1, 0);
return tuple<Q, Q, Q> (*this, 1, 0);
else
return triple<Q, Q, Q> (q, 0, 1);
return tuple<Q, Q, Q> (q, 0, 1);
}
Q gcd (const Q &q) const

55
algebra/Z.h
View File

@ -21,14 +21,14 @@ class Z
Z_impl (reader &r)
{
mpz_init (x);
mpz_inp_raw (x, r.fp);
r.read_mpz (x);
}
~Z_impl () { mpz_clear (x); }
void write_self (writer &w) const
{
mpz_out_raw (w.fp, x);
w.write_mpz (x);
}
};
@ -48,6 +48,7 @@ class Z
Z &operator = (int x) { impl = new Z_impl (x); return *this; }
bool operator == (const Z &z) const { return mpz_cmp (impl->x, z.impl->x) == 0; }
bool operator != (const Z &z) const { return !operator == (z); }
bool operator == (int y) const { return mpz_cmp_si (impl->x, y) == 0; }
bool operator != (int y) const { return !operator == (y); }
@ -91,13 +92,13 @@ class Z
return Z (STEAL, x);
}
Z operator / (const Z &z) const
Z operator / (const Z &denom) const
{
if (mpz_cmp_si (z.impl->x, 1) == 0)
if (mpz_cmp_si (denom.impl->x, 1) == 0)
return *this;
else
{
assert (mpz_cmp_si (z.impl->x, -1) == 0);
assert (mpz_cmp_si (denom.impl->x, -1) == 0);
mpz_t x;
mpz_init (x);
@ -112,6 +113,7 @@ class Z
return Z (COPY, *this);
}
// *this += z1*z2
Z &muladdeq (const Z &z1, const Z &z2)
{
mpz_addmul (impl->x, z1.impl->x, z2.impl->x);
@ -148,33 +150,30 @@ class Z
return *this;
}
bool divides (const Z &n) const
bool divides (const Z &num) const
{
// d = *this
return mpz_divisible_p (n.impl->x, impl->x);
return mpz_divisible_p (num.impl->x, impl->x);
}
bool operator | (const Z &num) const { return divides (num); }
bool operator | (const Z &z) const { return divides (z); }
Z div (const Z &d) const
Z divide_exact (const Z &denom) const
{
// n = *this
// num = *this
mpz_t q;
mpz_init (q);
mpz_divexact (q, impl->x, d.impl->x);
mpz_divexact (q, impl->x, denom.impl->x);
return Z (STEAL, q);
}
triple<Z, Z, Z> extended_gcd (const Z &z) const
tuple<Z, Z> divide_with_remainder (const Z &denom) const
{
mpz_t d, s, t;
mpz_init (d);
mpz_init (s);
mpz_init (t);
mpz_gcdext (d, s, t, impl->x, z.impl->x);
return triple<Z, Z, Z> (Z (STEAL, d),
Z (STEAL, s),
Z (STEAL, t));
// *this = num
mpz_t q, r;
mpz_init (q);
mpz_init (r);
mpz_tdiv_qr (q, r, impl->x, denom.impl->x);
return make_tuple (Z (STEAL, q),
Z (STEAL, r));
}
Z gcd (const Z &z) const
@ -191,6 +190,18 @@ class Z
return Z (STEAL, m);
}
tuple<Z, Z, Z> extended_gcd (const Z &z) const
{
mpz_t d, s, t;
mpz_init (d);
mpz_init (s);
mpz_init (t);
mpz_gcdext (d, s, t, impl->x, z.impl->x);
return make_tuple (Z (STEAL, d),
Z (STEAL, s),
Z (STEAL, t));
}
static void show_ring () { printf ("Z"); }
void show_self () const { mpz_out_str (stdout, 10, impl->x); }
void display_self () const { show_self (); newline (); }

6
algebra/Z2.h
View File

@ -54,12 +54,12 @@ class Z2
return Z2 (1);
}
triple<Z2, Z2, Z2> extended_gcd (Z2 x) const
tuple<Z2, Z2, Z2> extended_gcd (Z2 x) const
{
if (v)
return triple<Z2, Z2, Z2> (Z2 (1), Z2 (1), Z2 (0));
return make_tuple (Z2 (1), Z2 (1), Z2 (0));
else
return triple<Z2, Z2, Z2> (Z2 (1), Z2 (0), Z2 (1));
return make_tuple (Z2 (1), Z2 (0), Z2 (1));
}
static void show_ring () { printf ("Z2"); }

15
algebra/Zp.h
View File

@ -32,6 +32,7 @@ class Zp
}
bool operator == (const Zp &x) const { return v == x.v; }
bool operator != (const Zp &x) const { return !operator == (x); }
bool operator == (int x) const { return operator == (Zp (x)); }
bool operator != (int x) const { return !operator == (x); }
@ -56,11 +57,11 @@ class Zp
Zp recip () const
{
triple<unsigned, int, int> t = unsigned_extended_gcd (v, p);
assert (t.first == 1);
assert ((int)t.first == t.second*(int)v + t.third*(int)p);
tuple<unsigned, int, int> t = unsigned_extended_gcd (v, p);
assert (get<0> (t) == 1);
assert ((int)get<0> (t) == get<1> (t)*(int)v + get<2> (t)*(int)p);
return Zp (t.second);
return Zp (get<1> (t));
}
Zp &operator += (const Zp &x)
@ -92,12 +93,12 @@ class Zp
Zp div (const Zp &d) const { return operator / (d); }
triple<Zp, Zp, Zp> extended_gcd (const Zp &x) const
tuple<Zp, Zp, Zp> extended_gcd (const Zp &x) const
{
if (v)
return triple<Zp, Zp, Zp> (v, 1, 0);
return make_tuple (v, Zp (1), Zp (0));
else
return triple<Zp, Zp, Zp> (x, 0, 1);
return make_tuple (x, Zp (0), Zp (1));
}
Zp gcd (const Zp &x) const

32
algebra/algebra.cpp
View File

@ -39,43 +39,43 @@ int64_gcd (int64 a, int64 b)
(uint64)std::abs (b));
}
static triple<unsigned, int, int>
static tuple<unsigned, int, int>
extended_gcd_1 (int a, int b)
{
if (b == 0)
return triple<unsigned, int, int> (a, 1, 0);
return tuple<unsigned, int, int> (a, 1, 0);
unsigned t = a % b;
if (!t)
return triple<unsigned, int, int> (b, 0, 1);
return make_tuple (b, 0, 1);
else
{
triple<unsigned, int, int> s = unsigned_extended_gcd (b, t);
tuple<unsigned, int, int> s = unsigned_extended_gcd (b, t);
unsigned d = s.first;
int x = s.third,
y = s.second - s.third * (a / b);
unsigned d = get<0> (s);
int x = get<2> (s),
y = get<1> (s) - get<2> (s) * (a / b);
assert ((int)d == a*x + b*y);
return triple<unsigned, int, int> (d, x, y);
return make_tuple (d, x, y);
}
}
triple<unsigned, int, int>
tuple<unsigned, int, int>
unsigned_extended_gcd (unsigned a, unsigned b)
{
return extended_gcd_1 ((int)a, (int)b);
}
triple<unsigned, int, int>
tuple<unsigned, int, int>
extended_gcd (int a, int b)
{
triple<unsigned, int, int> t = extended_gcd_1 (std::abs (a),
std::abs (b));
unsigned d = t.first;
int x = t.second,
y = t.third;
tuple<unsigned, int, int> t = extended_gcd_1 (std::abs (a),
std::abs (b));
unsigned d = get<0> (t);
int x = get<1> (t),
y = get<2> (t);
if (a < 0)
x *= -1;
if (b < 0)
@ -83,7 +83,7 @@ extended_gcd (int a, int b)
assert ((int)d == a*x + b*y);
return triple<unsigned, int, int> (d, x, y);
return make_tuple (d, x, y);
}
unsigned

6
algebra/algebra.h
View File

@ -1,6 +1,4 @@
#include <gmp.h>
#include <lib/lib.h>
inline int recip (int x)
@ -42,9 +40,9 @@ unsigned int_lcm (int a, int b);
uint64 int64_lcm (int64 a, int64 b);
// (d, x, y) = gcd (a, b) where x*a + y*b = d
triple<unsigned, int, int> extended_gcd (int a, int b);
tuple<unsigned, int, int> extended_gcd (int a, int b);
triple<unsigned, int, int> unsigned_extended_gcd (unsigned a, unsigned b);
tuple<unsigned, int, int> unsigned_extended_gcd (unsigned a, unsigned b);
template<class R> class linear_combination;
template<class R> class linear_combination_const_iter;

7
algebra/fraction_field.h
View File

@ -36,6 +36,7 @@ template<class T> class fraction_field
fraction_field &operator = (int x) { num = x; denom = 1; return *this; }
bool operator == (const fraction_field &q) const { return num * q.denom == q.num * denom; }
bool operator != (const fraction_field &q) const { return !operator == (q); }
bool operator == (int x) const { return num == denom * T (x); }
bool operator != (int x) const { return !operator == (x); }
@ -187,12 +188,12 @@ template<class T> class fraction_field
return fraction_field (1);
}
triple<fraction_field, fraction_field, fraction_field> extended_gcd (const fraction_field &x) const
tuple<fraction_field, fraction_field, fraction_field> extended_gcd (const fraction_field &x) const
{
if (*this != 0)
return triple<fraction_field, fraction_field, fraction_field> (*this, 1, 0);
return make_tuple (*this, fraction_field (1), fraction_field (0));
else
return triple<fraction_field, fraction_field, fraction_field> (x, 0, 1);
return make_tuple (x, fraction_field (0), fraction_field (1));
}
static void show_ring () { printf ("fraction_field("); T::show_ring (); printf (")"); }

2
algebra/grading.h
View File

@ -36,6 +36,8 @@ class grading
}
bool operator == (const grading &gr) const { return h == gr.h && q == gr.q; }
bool operator != (const grading &gr) const { return !operator == (gr); }
bool operator < (const grading &gr) const
{
return h < gr.h

1
algebra/linear_combination.h
View File

@ -55,6 +55,7 @@ class linear_combination
lc3 -= lc2;
return lc3 == 0;
}
bool operator != (const linear_combination &lc) const { return !operator == (lc); }
bool operator == (int x) const
{

75
algebra/module.h
View File

@ -31,10 +31,10 @@ class module : public refcounted
id = id_counter;
id_counter ++;
}
module (const module &); // doesn't exist
module (const module &) = delete;
virtual ~module () { }
module &operator = (const module &); // doesn't exist
module &operator = (const module &) = delete;
public:
// the number of generators; n
@ -466,11 +466,11 @@ class base_module : public module<R>
G g;
public:
base_module (); // doesn't exist
base_module () = delete;
base_module (const G &g_) : g(g_) { }
~base_module () { }
base_module &operator = (const base_module &); // doesn't exist
base_module &operator = (const base_module &) = delete;
unsigned dim () const { return g.dim (); }
unsigned free_rank () const { return g.free_rank (); }
@ -487,7 +487,7 @@ class explicit_module : public module<R>
basedvector<grading, 1> hq;
public:
explicit_module (); // doesn't exist
explicit_module () = delete;
explicit_module (unsigned r_,
basedvector<R, 1> ann_,
basedvector<grading, 1> hq_)
@ -497,7 +497,7 @@ class explicit_module : public module<R>
explicit explicit_module (unsigned r_, basedvector<grading, 1> hq_) : r(r_), hq(hq_) { }
~explicit_module () { }
explicit_module &operator = (const explicit_module &); // doesn't exist
explicit_module &operator = (const explicit_module &) = delete;
unsigned dim () const { return r + ann.size (); }
unsigned free_rank () const { return r; }
@ -525,7 +525,7 @@ class free_submodule : public module<R>
{ }
~free_submodule () { }
free_submodule &operator = (const free_submodule &); // doesn't exist
free_submodule &operator = (const free_submodule &) = delete;
ptr<const module<R> > parent_module () const { return parent; }
@ -562,13 +562,13 @@ class quotient_module : public module<R>
basedvector<map<unsigned, R>, 1> pi;
public:
quotient_module (const quotient_module &); // doesn't exist
quotient_module (const quotient_module &) = delete;
quotient_module (ptr<const module<R> > parent_)
: parent(parent_)
{ }
~quotient_module () { }
quotient_module &operator = (const quotient_module &); // doesn't exsit
quotient_module &operator = (const quotient_module &) = delete;
ptr<const module<R> > parent_module () const { return parent; }
@ -617,7 +617,7 @@ class map_impl : public refcounted
ptr<const module<R> > to;
public:
map_impl (const map_impl &); // doesn't exist
map_impl (const map_impl &) = delete;
map_impl (ptr<const module<R> > fromto)
: from(fromto), to(fromto)
{ }
@ -626,7 +626,7 @@ class map_impl : public refcounted
{ }
virtual ~map_impl () { }
map_impl &operator = (const map_impl &); // doesn't exist
map_impl &operator = (const map_impl &) = delete;
virtual linear_combination<R> column (unsigned i) const = 0;
@ -867,6 +867,7 @@ class mod_map
}
return 1;
}
bool operator != (const mod_map &m) const { return !operator == (m); }
bool operator == (int x) const
{
@ -1095,16 +1096,16 @@ quotient_helper<R>::improve_pivot_row (unsigned i, unsigned j, unsigned i2)
}
#endif
triple<R, R, R> t = rc.extended_gcd (r2c);
assert (t.first == rc*t.second + t.third*r2c);
tuple<R, R, R> t = rc.extended_gcd (r2c);
assert (get<0> (t) == rc*get<1> (t) + get<2> (t)*r2c);
rows[i] = r*t.second + r2*t.third;
rows[i2] = (rc.div (t.first))*r2 - (r2c.div (t.first))*r;
rows[i] = r*get<1> (t) + r2*get<2> (t);
rows[i2] = (rc.div (get<0> (t)))*r2 - (r2c.div (get<0> (t)))*r;
assert ((rc | r2c) == rc.divides (t.first));
assert (!rc.divides (t.first) || rows[i2](j) == 0);
assert ((rc | r2c) == rc.divides (get<0> (t)));
assert (!rc.divides (get<0> (t)) || rows[i2](j) == 0);
return !rc.divides (t.first);
return !rc.divides (get<0> (t));
}
template<class R> bool
@ -1149,8 +1150,8 @@ quotient_helper<R>::improve_pivot_column (unsigned i, unsigned j, unsigned j2)
}
#endif
triple<R, R, R> t = rc.extended_gcd (rc2);
assert (t.first == rc*t.second + t.third*rc2);
tuple<R, R, R> t = rc.extended_gcd (rc2);
assert (get<0> (t) == rc*get<1> (t) + get<2> (t)*rc2);
for (unsigned k = 1; k <= rows.size (); k ++)
{
@ -1158,9 +1159,9 @@ quotient_helper<R>::improve_pivot_column (unsigned i, unsigned j, unsigned j2)
R rkc = rk(j),
rkc2 = rk(j2);
rk.set_coeff (rkc*t.second + rkc2*t.third,
rk.set_coeff (rkc*get<1> (t) + rkc2*get<2> (t),
j);
rk.set_coeff (rkc2*(rc.div (t.first)) - rkc*(rc2.div (t.first)),
rk.set_coeff (rkc2*(rc.div (get<0> (t))) - rkc*(rc2.div (get<0> (t))),
j2);
}
@ -1169,8 +1170,8 @@ quotient_helper<R>::improve_pivot_column (unsigned i, unsigned j, unsigned j2)
assert (g.hq () == g2.hq ());
generators[j] = (rc.div (t.first)) * g + (rc2.div (t.first)) * g2;
generators[j2] = t.second * g2 - t.third * g;
generators[j] = (rc.div (get<0> (t))) * g + (rc2.div (get<0> (t))) * g2;
generators[j2] = get<1> (t) * g2 - get<2> (t) * g;
#if 0
for (unsigned k = 1; k <= rows.size (); k ++)
@ -1189,8 +1190,8 @@ quotient_helper<R>::improve_pivot_column (unsigned i, unsigned j, unsigned j2)
R d = ginv(j),
d2 = ginv(j2);
ginv.set_coeff (t.second*d + t.third*d2, j);
ginv.set_coeff (rc.div (t.first) * d2 - rc2.div (t.first) * d, j2);
ginv.set_coeff (get<1> (t)*d + get<2> (t)*d2, j);
ginv.set_coeff (rc.div (get<0> (t)) * d2 - rc2.div (get<0> (t)) * d, j2);
}
#if 0
@ -1207,10 +1208,10 @@ quotient_helper<R>::improve_pivot_column (unsigned i, unsigned j, unsigned j2)
}
#endif
assert ((rc | rc2) == rc.divides (t.first));
assert (!rc.divides (t.first) || r(j2) == 0);
assert ((rc | rc2) == rc.divides (get<0> (t)));
assert (!rc.divides (get<0> (t)) || r(j2) == 0);
return !rc.divides (t.first);
return !rc.divides (get<0> (t));
}
template<class R> void
@ -1595,7 +1596,7 @@ free_submodule<R>::restrict_submodule (ptr<const free_submodule<R> > m) const
span[i] = restrict (m->inject_generator (i));
mod_span<R> span2 (this, span);
return submodule (span2);
return this->submodule (span2);
}
template<class R> bool
@ -1672,11 +1673,11 @@ mod_map<R>::kernel () const
R to_xc = to_x(i);
if (! (to_vc | to_xc))
{
triple<R, R, R> t = to_vc.extended_gcd (to_xc);
assert (t.first == to_vc*t.second + t.third*to_xc);
tuple<R, R, R> t = to_vc.extended_gcd (to_xc);
assert (get<0> (t) == to_vc*get<1> (t) + get<2> (t)*to_xc);
to_v = t.second*to_v + t.third*to_x;
from_v = t.second*from_v + t.third*from_x;
to_v = get<1> (t)*to_v + get<2> (t)*to_x;
from_v = get<1> (t)*from_v + get<2> (t)*from_x;
assert (to_v(i) != 0);
}
@ -1770,10 +1771,10 @@ mod_span<R>::mod_span (ptr<const module<R> > mod,
if (! (vc | xc))
{
triple<R, R, R> t = vc.extended_gcd (xc);
assert (t.first == vc*t.second + t.third*xc);
tuple<R, R, R> t = vc.extended_gcd (xc);
assert (get<0> (t) == vc*get<1> (t) + get<2> (t)*xc);
v = t.second*v + t.third*x;
v = get<1> (t)*v + get<2> (t)*x;
assert (v(i) != 0);
}

2
algebra/multivariate_laurentpoly.h
View File

@ -55,6 +55,7 @@ class multivariate_laurent_monomial
#endif
return m == e.m;
}
bool operator != (const multivariate_laurent_monomial &e) const { return !operator == (e); }
bool operator == (int x) const
{
@ -243,6 +244,7 @@ class multivariate_laurentpoly
#endif
return coeffs == p.coeffs;
}
bool operator != (const multivariate_laurentpoly &p) const { return !operator == (p); }
bool operator == (int x) const
{

4
algebra/multivariate_polynomial.h
View File

@ -56,6 +56,7 @@ class multivariate_monomial
}
return 1;
}
bool operator != (const multivariate_monomial &e) const { return !operator == (e); }
bool operator < (const multivariate_monomial &e) const
{
@ -199,7 +200,7 @@ public:
bool is_unit () const;
bool operator == (multivariate_polynomial p) const
bool operator == (const multivariate_polynomial &p) const
{
#ifndef NDEBUG
check ();
@ -207,6 +208,7 @@ public:
#endif
return coeffs == p.coeffs;
}
bool operator != (const multivariate_polynomial &p) const { return !operator == (p); }
bool operator == (int x) const
{

109
algebra/polynomial.h
View File

@ -41,6 +41,7 @@ public:
polynomial (const polynomial &p) : coeffs(p.coeffs) { }
polynomial (copy, const polynomial &p) : coeffs(COPY, p.coeffs) { }
polynomial (reader &r) : coeffs(r) { }
~polynomial () { }
polynomial &operator = (const polynomial &p) { coeffs = p.coeffs; return *this; }
@ -64,7 +65,16 @@ public:
unsigned degree () const;
bool is_unit () const;
bool operator == (polynomial p) const
polynomial recip () const
{
assert (coeffs.card () != 1);
pair<unsigned, T> p = coeffs.head ();
assert (p.first == 0);
return polynomial (p.second.recip ());
}
bool operator == (const polynomial &p) const
{
#ifndef NDEBUG
check ();
@ -72,6 +82,7 @@ public:
#endif
return coeffs == p.coeffs;
}
bool operator != (const polynomial &p) const { return !operator == (p); }
bool operator == (int x) const
{
@ -112,27 +123,33 @@ public:
return r;
}
polynomial operator - (polynomial p) const
polynomial operator - (const polynomial &p) const
{
polynomial r (COPY, *this);
r -= p;
return r;
}
polynomial operator * (polynomial p) const;
polynomial operator * (const polynomial &p) const;
pair<polynomial, polynomial> divide_with_remainder (polynomial d) const;
bool divides (const polynomial &num) const;
bool operator | (const polynomial &num) const { return divides (num); }
polynomial mod (polynomial d) const;
bool divides (polynomial d) const;
polynomial divide_exact (polynomial d) const;
tuple<polynomial, polynomial> divide_with_remainder (const polynomial &denom) const;
polynomial gcd (polynomial b) const;
polynomial mod (const polynomial &denom) const;
polynomial divide_exact (const polynomial &denom) const;
polynomial gcd (const polynomial &b) const;
polynomial lcm (const polynomial &b) const;
tuple<polynomial, polynomial, polynomial> extended_gcd (const polynomial &b) const;
#ifndef NDEBUG
void check () const;
#endif
void write_self (writer &w) const { write (w, coeffs); }
static void show_ring () { T::show_ring (); printf ("[x]"); }
void display_self () const { show_self (); newline (); }
void show_self () const;
@ -197,7 +214,7 @@ polynomial<T>::operator *= (T s)
}
template<class T> polynomial<T>
polynomial<T>::operator * (polynomial p) const
polynomial<T>::operator * (const polynomial &p) const
{
polynomial r;
@ -213,9 +230,10 @@ polynomial<T>::operator * (polynomial p) const
return r;
}
template<class T> pair<polynomial<T>, polynomial<T> >
polynomial<T>::divide_with_remainder (polynomial d) const
template<class T> tuple<polynomial<T>, polynomial<T> >
polynomial<T>::divide_with_remainder (const polynomial &d) const
{
// num = *this
assert (d != 0);
polynomial r (COPY, *this);
@ -240,45 +258,80 @@ polynomial<T>::divide_with_remainder (polynomial d) const
assert (r == 0 || r.degree () < d.degree ());
// assert (*this == q*d + r);
return pair<polynomial, polynomial> (q, r);
return make_tuple (q, r);
}
template<class T> polynomial<T>
polynomial<T>::mod (polynomial d) const
polynomial<T>::mod (const polynomial &denom) const
{
pair<polynomial<T>, polynomial<T> > qr = divide_with_remainder (d);
return qr.second;
polynomial q, r;
tie (q, r) = divide_with_remainder (denom);
return r;
}
template<class T> bool
polynomial<T>::divides (polynomial d) const
polynomial<T>::divides (const polynomial &num) const
{
pair<polynomial<T>, polynomial<T> > qr = divide_with_remainder (d);
return qr.second == 0;
// denom = *this
polynomial q, r;
tie (q, r) = num.divide_with_remainder (*this);
return r == 0;
}
template<class T> polynomial<T>
polynomial<T>::divide_exact (polynomial d) const
polynomial<T>::divide_exact (const polynomial &denom) const
{
pair<polynomial<T>, polynomial<T> > qr = divide_with_remainder (d);
assert (qr.second == 0);
return qr.first;
polynomial q, r;
tie (q, r) = divide_with_remainder (denom);
assert (r == 0);
return q;
}
template<class T> polynomial<T>
polynomial<T>::gcd (polynomial b) const
polynomial<T>::gcd (const polynomial &b) const
{
polynomial a = *this;
while (b != 0)
{
pair<polynomial<T>, polynomial<T> > a_qr = a.divide_with_remainder (b);
polynomial r;
tie (ignore, r) = a.divide_with_remainder (b);
a = b;
b = a_qr.second;
b = r;
}
return a;
}
template<class T> polynomial<T>
polynomial<T>::lcm (const polynomial &b) const
{
// a = *this
return divide_exact (gcd (b)) * b;
}
template<class T> tuple<polynomial<T>, polynomial<T>, polynomial<T> >
polynomial<T>::extended_gcd (const polynomial &b) const
{
// a = *this
if (b == 0)
return make_tuple (*this, polynomial (1), polynomial (0));
polynomial q, r;
tie (q, r) = divide_with_remainder (b);
if (r == 0)
return make_tuple (b, polynomial (0), polynomial (1));
else
{
polynomial d, s, t;
tie (d, s, t) = b.extended_gcd (r);
polynomial s2 = t,
t2 = s - t*q;
return make_tuple (d, s2, t2);
}
}
#ifndef NDEBUG
template<class T> void
polynomial<T>::check () const
@ -380,7 +433,8 @@ class polynomial<Z2>
return *this;
}
bool operator == (polynomial p) const { return coeffs == p.coeffs; }
bool operator == (const polynomial &p) const { return coeffs == p.coeffs; }
bool operator != (const polynomial &p) const { return !operator == (p); }
bool operator == (int x) const
{
@ -443,4 +497,3 @@ class polynomial<Z2>
void display_self () const { show_self (); newline (); }
void show_self () const;
};

4
cobordism.cpp
View File

@ -19,10 +19,10 @@ public:
public:
rd_unify ();
rd_unify (const rd_unify &); // doesn't exist
rd_unify (const rd_unify &) = delete;
~rd_unify () { }
rd_unify &operator = (const rd_unify &); // doesn't exist
rd_unify &operator = (const rd_unify &) = delete;
bool unify (const resolution_diagram &rd1, const resolution_diagram &rd2);
unsigned map_starting_monomial (unsigned m);

5
cobordism.h
View File

@ -160,6 +160,7 @@ class resolution_diagram
resolution_diagram &operator = (const resolution_diagram &rd);
bool operator == (const resolution_diagram &rd) const;
bool operator != (const resolution_diagram &rd) const { return !operator == (rd); }
/* reverse, reverse_orientation leave starting/ending circle numbers
unchanged. */
@ -190,10 +191,10 @@ class resolution_diagram_builder
public:
resolution_diagram_builder ();
resolution_diagram_builder (const resolution_diagram_builder &); // doesn't exist
resolution_diagram_builder (const resolution_diagram_builder &) = delete;
~resolution_diagram_builder () { }
resolution_diagram_builder &operator = (const resolution_diagram_builder &); // doesn't exist
resolution_diagram_builder &operator = (const resolution_diagram_builder &) = delete;
void init (const knot_diagram &d,
smallbitset from_state, const smoothing &from_s,

12
cube.h
View File

@ -3,10 +3,10 @@ class map_rules
{
public:
map_rules () { }
map_rules (const map_rules &); // doesn't exist
map_rules (const map_rules &) = delete;
virtual ~map_rules () { }
map_rules &operator = (const map_rules &); // doesn't exist
map_rules &operator = (const map_rules &) = delete;
virtual void map (basedvector<pair<unsigned, unsigned>, 1> &out,
resolution_diagram_builder &rdb) const = 0;
@ -77,10 +77,10 @@ class twisted_map_rules
{
public:
twisted_map_rules () { }
twisted_map_rules (const twisted_map_rules &); // doesn't exist
twisted_map_rules (const twisted_map_rules &) = delete;
virtual ~twisted_map_rules () { }
map_rules &operator = (const twisted_map_rules &); // doesn't exist
map_rules &operator = (const twisted_map_rules &) = delete;
virtual void map (basedvector<triple<unsigned, unsigned, set<unsigned> >, 1> &out,
resolution_diagram_builder &rdb) const = 0;
@ -100,10 +100,10 @@ class twisted_cube
: c(c_)
{ }
twisted_cube (const twisted_cube &); // doesn't exist
twisted_cube (const twisted_cube &) = delete;
~twisted_cube () { }
twisted_cube &operator = (const twisted_cube &); // doesn't exist
twisted_cube &operator = (const twisted_cube &) = delete;
mod_map<R> compute_twisted_map (basedvector<int, 1> edge_weight,
unsigned dh,

14
cube_impl.h
View File

@ -9,7 +9,7 @@ public:
khC_generators (const cube<R> &c_) : c(c_) { }
~khC_generators () { }
khC_generators &operator = (const khC_generators &); // doesn't exist
khC_generators &operator = (const khC_generators &) = delete;
unsigned dim () const { return c.n_generators; }
unsigned free_rank () const { return c.n_generators; }
@ -187,10 +187,10 @@ class d_rules : public map_rules
{
public:
d_rules () { }
d_rules (const d_rules &); // doesn't exist
d_rules (const d_rules &) = delete;
~d_rules () { }
d_rules &operator = (const d_rules &); // doesn't exist
d_rules &operator = (const d_rules &) = delete;
void map (basedvector<pair<unsigned, unsigned>, 1> &out,
resolution_diagram_builder &rdb) const
@ -214,10 +214,10 @@ class twin_arrows_P_rules : public map_rules
{
public:
twin_arrows_P_rules () { }
twin_arrows_P_rules (const twin_arrows_P_rules &); // doesn't exist
twin_arrows_P_rules (const twin_arrows_P_rules &) = delete;
~twin_arrows_P_rules () { }
twin_arrows_P_rules &operator = (const twin_arrows_P_rules &); // doesn't exist
twin_arrows_P_rules &operator = (const twin_arrows_P_rules &) = delete;
void map (basedvector<pair<unsigned, unsigned>, 1> &out,
resolution_diagram_builder &rdb) const
@ -676,10 +676,10 @@ class twisted_barE_rules : public twisted_map_rules
{
public:
twisted_barE_rules () { }
twisted_barE_rules (const twisted_barE_rules &); // doesn't exist
twisted_barE_rules (const twisted_barE_rules &) = delete;
~twisted_barE_rules () { }
twisted_barE_rules &operator = (const twisted_barE_rules &); // doesn't exist
twisted_barE_rules &operator = (const twisted_barE_rules &) = delete;
void map (basedvector<triple<unsigned, unsigned, set<unsigned> >, 1> &out,
resolution_diagram_builder &rdb) const

4
knot_diagram.cpp
View File

@ -82,10 +82,10 @@ public:
public:
dt_layout (const dt_code &dt, knot_diagram &kd_);
dt_layout (const dt_layout &); // doesn't exist
dt_layout (const dt_layout &) = delete;
~dt_layout () { }
dt_layout &operator = (const dt_layout &); // doesn't exist
dt_layout &operator = (const dt_layout &) = delete;
unsigned find_crossing (unsigned prevc, unsigned previ, unsigned target,
bool under, unsigned dir);

16
lib/hashmap.h
View File

@ -1,16 +1,10 @@
/* wrapper for std::unordered_map */
template<class K>
struct hasher : public std::unary_function<K, hash_t>
{
hash_t operator () (const K &k) const { return hash (k); }
};
template<class K, class V>
class hashmap : public map_wrapper<std::tr1::unordered_map<K, V, hasher<K> >, K, V>
class hashmap : public map_wrapper<std::unordered_map<K, V, hasher<K> >, K, V>
{
typedef map_wrapper<std::tr1::unordered_map<K, V, hasher<K> >, K, V> base;
typedef map_wrapper<std::unordered_map<K, V, hasher<K> >, K, V> base;
public:
hashmap () { }
@ -21,3 +15,9 @@ class hashmap : public map_wrapper<std::tr1::unordered_map<K, V, hasher<K> >, K,
hashmap &operator = (const hashmap &m) { base::operator = (m); return *this; }
};
template<class K, class V>
using hashmap_iter = map_wrapper_iter<std::unordered_map<K, V>, K, V>;
template<class K, class V>
using hashmap_const_iter = map_wrapper_const_iter<std::unordered_map<K, V>, K, V>;

23
lib/hashset.h Normal file
View File

@ -0,0 +1,23 @@
/* wrapper for std::unordered_set */
template<class T>
class hashset : public set_wrapper<std::unordered_set<T, hasher<T> >, T>
{
typedef set_wrapper<std::unordered_set<T, hasher<T> >, T> base;
public:
hashset () { }
hashset (const hashset &m) : base(m) { }
hashset (copy, const hashset &m) : base(COPY, m) { }
hashset (reader &r) : base(r) { }
~hashset () { }
hashset &operator = (const hashset &m) { base::operator = (m); return *this; }
};
template<class T>
using hashset_iter = set_wrapper_iter<std::unordered_set<T, hasher<T> >, T>;
template<class T>
using hashset_const_iter = set_wrapper_const_iter<std::unordered_set<T, hasher<T> >, T>;

303
lib/io.cpp
View File

@ -1,10 +1,173 @@
#include <lib/lib.h>
void
writer::write_int (int x)
{
uint8 buf[5];
unsigned n = 0;
bool more = 1;
while (more)
{
uint8 b = (uint8)(x & 0x7f);
x >>= 7;
if ((x == 0
&& ! (b & 0x40))
|| (x == -1
&& (b & 0x40) == 0x40))
more = 0;
else
b |= 0x80;
assert (n < 5);
buf[n] = b;
n ++;
}
write_raw (buf, sizeof buf[0], n);
}
void
writer::write_unsigned (unsigned x)
{
uint8 buf[5];
unsigned n = 0;
bool more = 1;
while (more)
{
uint8 b = (uint8)(x & 0x7f);
x >>= 7;
if ((x == 0
&& ! (b & 0x40)))
more = 0;
else
b |= 0x80;
assert (n < 5);
buf[n] = b;
n ++;
}
write_raw (buf, sizeof buf[0], n);
}
void
writer::write_uint64 (uint64 x)
{
uint8 buf[10];
unsigned n = 0;
bool more = 1;
while (more)
{
uint8 b = (uint8)(x & 0x7f);
x >>= 7;
if ((x == 0
&& ! (b & 0x40)))
more = 0;
else
b |= 0x80;
assert (n < 10);
buf[n] = b;
n ++;
}
write_raw (buf, sizeof buf[0], n);
}
void
writer::write_mpz (const mpz_t x)
{
size_t count;
void *buf = mpz_export (nullptr, &count, -1, 1, -1, 0, x);
write_unsigned ((unsigned)count);
write_raw (buf, 1, count);
free (buf);
}
int
reader::read_int ()
{
int x = 0;
int shift = 0;
for (;;)
{
uint8 b = read_uint8 ();
x |= ((int)(b & 0x7f) << shift);
shift += 7;
if (! (b & 0x80))
{
if (shift < int_bits
&& (b & 0x40))
x = (x << (int_bits - shift)) >> (int_bits - shift);
break;
}
}
return x;
}
unsigned
reader::read_unsigned ()
{
unsigned x = 0;
unsigned shift = 0;
for (;;)
{
uint8 b = read_uint8 ();
x |= ((unsigned)(b & 0x7f) << shift);
shift += 7;
if (! (b & 0x80))
break;
}
return x;
}
uint64
reader::read_uint64 ()
{
uint64 x = 0;
uint64 shift = 0;
for (;;)
{
uint8 b = read_uint8 ();
x |= ((uint64)(b & 0x7f) << shift);
shift += 7;
if (! (b & 0x80))
break;
}
return x;
}
void
reader::read_mpz (mpz_t x)
{
unsigned count = read_unsigned ();
void *p = malloc (count);
if (!p)
{
stderror ("malloc");
exit (EXIT_FAILURE);
}
read_raw (p, 1, count);
mpz_import (x, count, -1, 1, -1, 0, p);
free (p);
}
FILE *open_file (const std::string &file, const char *mode)
{
FILE *fp = fopen (file.c_str (), mode);
if (fp == 0)
if (!fp)
{
stderror ("fopen: %s", file.c_str ());
exit (EXIT_FAILURE);
@ -17,41 +180,32 @@ void close_file (FILE *fp)
fclose (fp);
}
writer::writer (const std::string &file)
: fp(0)
gzFile
open_gzfile (const std::string &file, const char *mode)
{
fp = open_file (file, "w");
}
writer::~writer ()
{
if (fp)
gzFile gzfp = gzopen (file.c_str (), mode);
if (!gzfp)
{
fclose (fp);
fp = 0;
stderror ("gzopen: %s", file.c_str ());
exit (EXIT_FAILURE);
}
return gzfp;
}
reader::reader (const std::string &file)
: fp(0)
extern void close_gzfile (gzFile gzfp)
{
fp = open_file (file, "r");
}
reader::~reader ()
{
if (fp)
int r = gzclose (gzfp);
if (r != Z_OK)
{
fclose (fp);
fp = 0;
stderror ("gzclose");
exit (EXIT_FAILURE);
}
}
void
writer::write_char (char x)
file_writer::write_raw (const void *p, size_t itemsize, size_t nitems)
{
if (fwrite (&x, sizeof x, 1, fp) != 1)
if (fwrite (p, itemsize, nitems, fp) != nitems)
{
stderror ("fwrite");
exit (EXIT_FAILURE);
@ -59,103 +213,35 @@ writer::write_char (char x)
}
void
writer::write_bool (bool x)
file_reader::read_raw (void *p, size_t itemsize, size_t nitems)
{
if (fwrite (&x, sizeof x, 1, fp) != 1)
if (fread (p, itemsize, nitems, fp) != nitems)
{
stderror ("fwrite");
stderror ("fread");
exit (EXIT_FAILURE);
}
}
void
writer::write_int (int x)
gzfile_writer::write_raw (const void *p, size_t itemsize, size_t nitems)
{
if (fwrite (&x, sizeof x, 1, fp) != 1)
unsigned nbytes = itemsize*nitems;
if (gzwrite (gzfp, p, nbytes) != nbytes)
{
stderror ("fwrite");
stderror ("gzwrite");
exit (EXIT_FAILURE);
}
}
void
writer::write_unsigned (unsigned x)
gzfile_reader::read_raw (void *p, size_t itemsize, size_t nitems)
{
if (fwrite (&x, sizeof x, 1, fp) != 1)
{
stderror ("fwrite");
exit (EXIT_FAILURE);
}
}
void
writer::write_uint64 (uint64 x)
{
if (fwrite (&x, sizeof x, 1, fp) != 1)
{
stderror ("fwrite");
exit (EXIT_FAILURE);
}
}
bool
reader::read_bool ()
{
bool x;
if (fread (&x, sizeof x, 1, fp) != 1)
unsigned nbytes = itemsize*nitems;
if (gzread (gzfp, p, nbytes) != nitems)
{
stderror ("fread");
exit (EXIT_FAILURE);
}
return x;
}
char
reader::read_char ()
{
char x;
if (fread (&x, sizeof x, 1, fp) != 1)
{
stderror ("fread");
exit (EXIT_FAILURE);
}
return x;
}
int
reader::read_int ()
{
int x;
if (fread (&x, sizeof x, 1, fp) != 1)
{
stderror ("fread");
exit (EXIT_FAILURE);
}
return x;
}
unsigned
reader::read_unsigned ()
{
unsigned x;
if (fread (&x, sizeof x, 1, fp) != 1)
{
stderror ("fread");
exit (EXIT_FAILURE);
}
return x;
}
uint64
reader::read_uint64 ()
{
uint64 x;
if (fread (&x, sizeof x, 1, fp) != 1)
{
stderror ("fread");
exit (EXIT_FAILURE);
}
return x;
}
void
@ -164,12 +250,7 @@ read (reader &r, std::string &s)
unsigned n = r.read_unsigned ();
char buf[n + 1];
unsigned k = fread (buf, sizeof (char), n + 1, r.fp);
if (k != n + 1)
{
stderror ("fread");
exit (EXIT_FAILURE);
}
r.read_raw (buf, sizeof (char), n + 1);
assert (buf[n] == 0);
s = std::string (buf);
@ -181,9 +262,5 @@ write (writer &w, const std::string &s)
unsigned n = s.length ();
w.write_unsigned (n);
if (fwrite (s.c_str (), sizeof (char), n + 1, w.fp) != n + 1)
{
stderror ("fwrite");
exit (EXIT_FAILURE);
}
w.write_raw (s.c_str (), sizeof (char), n + 1);
}

137
lib/io.h
View File

@ -1,43 +1,138 @@
extern FILE *open_file (const std::string &file, const char *mode);
extern void close_file (FILE *fp);
class writer
{
public:
FILE *fp;
writer (const writer &) = delete;
writer () = default;
virtual ~writer () = default;
public:
writer (const std::string &file);
writer (const writer &); // doesn't exist
~writer ();
writer &operator = (const writer &) = delete;
writer &operator = (const writer &); // doesn't exist
virtual void write_raw (const void *p, size_t itemsize, size_t nitems) = 0;
void write_bool (bool x);
void write_char (char x);
void write_bool (bool x) { write_raw (&x, sizeof x, 1); }
void write_char (char x) { write_raw (&x, sizeof x, 1); }
void write_uint8 (uint8 x) { write_raw (&x, sizeof x, 1); }
void write_int (int x);
void write_unsigned (unsigned x);
void write_uint64 (uint64 x);
void write_mpz (const mpz_t x);
};
class reader
{
public:
FILE *fp;
reader (const reader &) = delete;
reader () = default;
virtual ~reader () = default;
public:
reader (const std::string &file);
reader (const reader &); // doesn't exist
~reader ();
reader &operator = (const reader &) = delete;
reader &operator = (const reader &); // doesn't exist
virtual void read_raw (void *p, size_t itemsize, size_t nitems) = 0;
bool read_bool ()
{
bool x;
read_raw (&x, sizeof x, 1);
return x;
}
char read_char ()
{
char x;
read_raw (&x, sizeof x, 1);
return x;
}
uint8 read_uint8 ()
{
uint8 x;
read_raw (&x, sizeof x, 1);
return x;
}
bool read_bool ();
char read_char ();
int read_int ();
unsigned read_unsigned ();
uint64 read_uint64 ();
void read_mpz (mpz_t x);
};
extern FILE *open_file (const std::string &file, const char *mode);
extern void close_file (FILE *fp);
extern gzFile open_gzfile (const std::string &file, const char *mode);
extern void close_gzfile (gzFile fp);
class file_writer : public writer
{
public:
FILE *fp;
public:
file_writer (const std::string &file)
: fp(open_file (file, "w"))
{
}
file_writer (const file_writer &) = delete;
~file_writer () { close_file (fp); }
file_writer &operator = (const file_writer &) = delete;
void write_raw (const void *p, size_t itemsize, size_t nitems);
};
class file_reader : public reader
{
public:
FILE *fp;
public:
file_reader (const std::string &file)
: fp(open_file (file, "r"))
{
}
file_reader (const file_reader &) = delete;
~file_reader () { close_file (fp); }
file_reader &operator = (const file_reader &) = delete;
void read_raw (void *p, size_t itemsize, size_t nitems);
};
class gzfile_writer : public writer
{
public:
gzFile gzfp;
public:
gzfile_writer (const std::string &file)
: gzfp(open_gzfile (file, "w9"))
{
}
gzfile_writer (const gzfile_writer &) = delete;
~gzfile_writer () { close_gzfile (gzfp); }
gzfile_writer &operator = (const gzfile_writer &) = delete;
void write_raw (const void *p, size_t itemsize, size_t nitems);
};
class gzfile_reader : public reader
{
public:
gzFile gzfp;
public:
gzfile_reader (const std::string &file)
: gzfp(open_gzfile (file, "r"))
{
}
gzfile_reader (const gzfile_reader &) = delete;
~gzfile_reader () { close_gzfile (gzfp); }
gzfile_reader &operator = (const gzfile_reader &) = delete;
void read_raw (void *p, size_t itemsize, size_t nitems);
};
inline void read (reader &r, bool &x) { x = r.read_bool (); }
@ -45,7 +140,7 @@ inline void read (reader &r, char &x) { x = r.read_char (); }
inline void read (reader &r, int &x) { x = r.read_int (); }
inline void read (reader &r, unsigned &x) { x = r.read_unsigned (); }
inline void read (reader &r, uint64 &x) { x = r.read_uint64 (); }
void read (reader &r, std::string &s);
extern void read (reader &r, std::string &s);
template<class T> inline void read (reader &r, T &x) { x = T(r); }
inline void ctor_read (reader &r, bool *p) { *p = r.read_bool (); }
@ -60,5 +155,5 @@ inline void write (writer &w, char x) { w.write_char (x); }
inline void write (writer &w, int x) { w.write_int (x); }
inline void write (writer &w, unsigned x) { w.write_unsigned (x); }
inline void write (writer &w, uint64 x) { w.write_uint64 (x); }
void write (writer &w, const std::string &s);
extern void write (writer &w, const std::string &s);
template<class T> inline void write (writer &w, const T &x) { x.write_self (w); }

35
lib/lib.h
View File

@ -7,17 +7,20 @@
#include <sys/stat.h>
#include <sys/errno.h>
#include <gmp.h>
#include <zlib.h>
#include <set>
#include <map>
#include <string>
#include <queue>
#include <algorithm>
#include <tr1/functional>
#include <tr1/unordered_map>
#include <functional>
#include <unordered_set>
#include <unordered_map>
/* just need to implement ==, < */
template<class T> bool operator != (const T &a, const T &b) { return ! (a == b); }
template<class T> bool operator <= (const T &a, const T &b) { return (a < b) || (a == b); }
template<class T> bool operator > (const T &a, const T &b) { return ! (a <= b); }
template<class T> bool operator >= (const T &a, const T &b) { return ! (a < b); }
@ -25,6 +28,8 @@ template<class T> bool operator >= (const T &a, const T &b) { return ! (a < b);
typedef enum copy { COPY, COPY1 } copy;
typedef enum copy2 { COPY2 } copy2;
typedef unsigned char uint8;
typedef unsigned char uchar;
typedef unsigned short ushort;
typedef unsigned int uint;
@ -35,6 +40,11 @@ typedef unsigned long long uint64;
typedef size_t hash_t;
static const unsigned uint8_bits = 8;
static const unsigned char_bits = 8;
static const unsigned uchar_bits = 8;
static const unsigned int_bits = 32;
inline hash_t hash (bool x) { return (hash_t)x; }
inline hash_t hash (char x) { return (hash_t)x; }
inline hash_t hash (unsigned char x) { return (hash_t)x; }
@ -151,9 +161,19 @@ int alpha_to_int (char c);
#include <lib/show.h>
#include <lib/refcount.h>
using std::tuple;
using std::get;
using std::make_tuple;
using std::tie;
using std::ignore;
#include <lib/pair.h>
#include <lib/maybe.h>
#include <lib/vector.h>
#include <lib/set_wrapper.h>
#include <lib/set.h>
class bitset;
@ -175,7 +195,16 @@ inline int random_int (int from, int to)
#include <lib/map_wrapper.h>
#include <lib/map.h>
template<class K>
struct hasher : public std::unary_function<K, hash_t>
{
hash_t operator () (const K &k) const { return hash (k); }
};
#include <lib/hashmap.h>
#include <lib/hashset.h>
#include <lib/ullmanmap.h>
#include <lib/mapcommon.h>
#include <lib/unionfind.h>

8
lib/map.h
View File

@ -1,5 +1,5 @@
/* wrapper for stl map */
/* wrapper for std::map */
template<class K, class V>
class map : public map_wrapper<std::map<K, V>, K, V>
@ -17,3 +17,9 @@ class map : public map_wrapper<std::map<K, V>, K, V>
map &operator = (const map &m) { base::operator = (m); return *this; }
};
template<class K, class V>
using map_iter = map_wrapper_iter<std::map<K, V>, K, V>;
template<class K, class V>
using map_const_iter = map_wrapper_const_iter<std::map<K, V>, K, V>;

14
lib/map_wrapper.h
View File

@ -1,5 +1,5 @@
/* wrapper for stl maps */
/* wrapper for STL maps */
template<class M, class K, class V> class map_wrapper_iter;
template<class M, class K, class V> class map_wrapper_const_iter;
@ -7,10 +7,10 @@ template<class M, class K, class V> class map_wrapper_const_iter;
template<class M, class K, class V>
class map_wrapper
{
private:
friend class map_wrapper_iter<M, K, V>;
friend class map_wrapper_const_iter<M, K, V>;
protected:
class map_impl : public refcounted
{
public:
@ -130,6 +130,7 @@ class map_wrapper
}
bool operator == (const map_wrapper &m) const;
bool operator != (const map_wrapper &m) const { return !operator == (m); }
bool operator < (const map_wrapper &m) const;
void write_self (writer &w) const;
@ -222,19 +223,19 @@ template<class M, class K, class V>
class map_wrapper_iter
{
private:
map_wrapper<M, K, V> &m;
ptr<typename map_wrapper<M, K, V>::map_impl> impl;
typename M::iterator i, end;
bool deleted;
public:
map_wrapper_iter (map_wrapper<M, K, V> &m_) : m(m_), i(m_.impl->t.begin ()), end(m_.impl->t.end ()), deleted(0) { }
map_wrapper_iter (map_wrapper<M, K, V> &m) : impl(m.impl), i(m.impl->t.begin ()), end(m.impl->t.end ()), deleted(0) { }
~map_wrapper_iter () { }
void del ()
{
assert (!deleted);
typename M::iterator iprev = i ++;
m.impl->t.erase (iprev);
impl->t.erase (iprev);
deleted = 1;
}
@ -249,10 +250,11 @@ template<class M, class K, class V>
class map_wrapper_const_iter
{
private:
ptr<const typename map_wrapper<M, K, V>::map_impl> impl;
typename M::const_iterator i, end;
public:
map_wrapper_const_iter (const map_wrapper<M, K, V> &m) : i(m.impl->t.begin ()), end(m.impl->t.end ()) { }
map_wrapper_const_iter (const map_wrapper<M, K, V> &m) : impl(m.impl), i(m.impl->t.begin ()), end(m.impl->t.end ()) { }
~map_wrapper_const_iter () { }
const K &key () const { return i->first; }

3
lib/pair.h
View File

@ -17,6 +17,7 @@ class pair
pair &operator = (const pair &p) { first = p.first; second = p.second; return *this; }
bool operator == (const pair &p) const { return first == p.first && second == p.second; }
bool operator != (const pair &p) const { return !operator == (p); }
bool operator < (const pair &p) const { return (first < p.first
|| (first == p.first && second < p.second)); }
@ -67,6 +68,8 @@ public:
{
return first == t.first && second == t.second && third == t.third;
}
bool operator != (const triple &t) const { return !operator == (t); }
bool operator < (const triple &t) const
{
if (first < t.first)

2
lib/priority_queue.h
View File

@ -18,6 +18,8 @@ class priority_queue
weighted &operator = (const weighted &w) { v = w.v; pri = w.pri; }
bool operator == (const weighted &w) const { return v == w.v && pri == w.pri; }
bool operator != (const weighted &w) const { return !operator == (w); }
bool operator < (const weighted &w) const { return pri > w.pri || (pri == w.pri && v < w.v); }
};

4
lib/refcount.h
View File

@ -42,10 +42,10 @@ class refcounted
public:
refcounted () : refcount(0) { }
refcounted (const refcounted &rc); // doesn't exist
refcounted (const refcounted &rc) = delete;
~refcounted () { }
refcounted &operator = (const refcounted &rc); // doesn't exist
refcounted &operator = (const refcounted &rc) = delete;
};
template<class T>

218
lib/set.h
View File

@ -1,149 +1,45 @@
/* wrap for std::set */
template<class T> class set_iter;
template<class T> class set_const_iter;
/* wrapper for std::set */
template<class T>
class set
class set : public set_wrapper<std::set<T>, T>
{
private:
friend class set_iter<T>;
friend class set_const_iter<T>;
class set_impl : public refcounted
{
public:
std::set<T> t;
};
ptr<set_impl> impl;
typedef set_wrapper<std::set<T>, T> base;
public:
typedef set_iter<T> iter;
typedef set_const_iter<T> const_iter;
public:
set () : impl(new set_impl) { }
set (unsigned dummy_size) : impl(new set_impl) { }
set (const set &s) : impl(s.impl) { }
set (copy, const set &s) : impl(new set_impl) { impl->t = std::set<T> (s.impl->t); }
set (reader &r);
set () { }
set (unsigned dummy_size) : base(dummy_size) { }
set (const set &m) : base(m) { }
set (copy, const set &m) : base(COPY, m) { }
set (reader &r) : base(r) { }
~set () { }
set &operator = (const set &s) { impl = s.impl; return *this; }
T pop ()
{
typename std::set<T>::const_iterator i = impl->t.begin ();
assert (i != impl->t.end ());
T tmp = *i;
impl->t.erase (i);
return tmp;
}
bool is_empty () const { return impl->t.empty (); }
unsigned card () const { return impl->t.size (); }
const T &head () const;
const T &tail () const;
set &operator = (const set &m) { base::operator = (m); return *this; }
bool operator == (const set &s) const;
bool operator != (const set &s) const { return !operator == (s); }
bool operator < (const set &s) const;
bool operator <= (const set &s) const;
void clear () { impl->t.clear (); }
void push (const T &v) { assert (impl->t.find (v) == impl->t.end ()); impl->t.insert (v); }
bool toggle (const T &v);
void operator += (const T &v) { impl->t.insert (v); }
void operator -= (const T &v) { impl->t.erase (v); }
void yank (const T &v) { assert (operator % (v)); impl->t.erase (v); }
set &operator |= (const set<T> &s);
set &operator &= (const set<T> &s);
set &operator ^= (const set<T> &s);
bool operator % (const T &v) const { return impl->t.find (v) != impl->t.end (); }
bool operator () (const T &v) const { return operator % (v); }
void write_self (writer &w) const;
hash_t hash_self () const;
set &operator |= (const set &s);
set &operator &= (const set &s);
set &operator ^= (const set &s);
};
template<class T>
class set_iter
{
set<T> &s;
typename std::set<T>::const_iterator i, end;
bool deleted;
public:
set_iter (set<T> &s_) : s(s_), i(s_.impl->t.begin ()), end(s_.impl->t.end ()), deleted(0) { }
~set_iter () { }
void del ()
{
assert (!deleted);
typename std::set<T>::const_iterator iprev = i ++;
s.impl->t.erase (iprev);
deleted = 1;
}
const T &val () const { assert (!deleted); return *i; }
operator bool () const { assert (!deleted); return i != end; }
set_iter &operator ++ () { if (deleted) deleted = 0; else i ++; return *this; }
void operator ++ (int) { operator ++ (); }
};
using set_iter = set_wrapper_iter<std::set<T>, T>;
template<class T>
class set_const_iter
{
typename std::set<T>::const_iterator i, end;
public:
set_const_iter (const set<T> &s) : i(s.impl->t.begin ()), end(s.impl->t.end ()) { }
~set_const_iter () { }
const T &val () const { return *i; }
operator bool () const { return i != end; }
set_const_iter &operator ++ () { i ++; return *this; }
void operator ++ (int) { i ++; }
};
template<class T>
set<T>::set (reader &r)
{
unsigned n;
read (r, n);
T x;
for (unsigned i = 0; i < n; i ++)
{
read (r, x);
push (x);
}
}
template<class T> const T &
set<T>::head () const
{
set_const_iter<T> i = *this;
assert (i);
return i.val ();
}
template<class T> const T &
set<T>::tail () const
{
typename std::set<T>::const_reverse_iterator i = impl->t.rbegin ();
assert (i != impl->t.rend ());
return *i;
}
using set_const_iter = set_wrapper_const_iter<std::set<T>, T>;
template<class T> bool
set<T>::operator == (const set &s) const
{
typename std::set<T>::const_iterator i = impl->t.begin (),
typename std::set<T>::const_iterator i = this->impl->t.begin (),
j = s.impl->t.begin (),
iend = impl->t.end (),
iend = this->impl->t.end (),
jend = s.impl->t.end ();
while (i != iend && j != jend && *i == *j)
@ -155,9 +51,9 @@ set<T>::operator == (const set &s) const
template<class T> bool
set<T>::operator < (const set &s) const
{
typename std::set<T>::const_iterator i = impl->t.begin (),
typename std::set<T>::const_iterator i = this->impl->t.begin (),
j = s.impl->t.begin (),
iend = impl->t.end (),
iend = this->impl->t.end (),
jend = s.impl->t.end ();
while (i != iend && j != jend && *i == *j)
@ -169,9 +65,9 @@ set<T>::operator < (const set &s) const
template<class T> bool
set<T>::operator <= (const set &s) const
{
typename std::set<T>::const_iterator i = impl->t.begin (),
typename std::set<T>::const_iterator i = this->impl->t.begin (),
j = s.impl->t.begin (),
iend = impl->t.end (),
iend = this->impl->t.end (),
jend = s.impl->t.end ();
while (i != iend && j != jend && *i == *j)
@ -184,56 +80,56 @@ set<T>::operator <= (const set &s) const
template<class T> bool
set<T>::toggle (const T &v)
{
typename std::set<T>::const_iterator i = impl->t.lower_bound (v),
end = impl->t.end ();
typename std::set<T>::const_iterator i = this->impl->t.lower_bound (v),
end = this->impl->t.end ();
if (i != end && *i == v)
{
impl->t.erase (i);
this->impl->t.erase (i);
return 1;
}
else
{
if (i == impl->t.begin ())
impl->t.insert (v);
if (i == this->impl->t.begin ())
this->impl->t.insert (v);
else
{
typename std::set<T>::const_iterator j = --i;
assert (*j < v);
impl->t.insert (j, v);
this->impl->t.insert (j, v);
}
return 0;
}
}
template<class T> set<T> &
set<T>::operator |= (const set<T> &s)
set<T>::operator |= (const set &s)
{
std::set<T> news;
std::set_union (impl->t.begin (), impl->t.end (),
std::set_union (this->impl->t.begin (), this->impl->t.end (),
s.impl->t.begin (), s.impl->t.end (),
inserter (news, news.begin ()));
impl->t = news;
this->impl->t = news;
return *this;
}
template<class T> set<T> &
set<T>::operator &= (const set<T> &s)
set<T>::operator &= (const set &s)
{
std::set<T> news;
std::set_intersection (impl->t.begin (), impl->t.end (),
std::set_intersection (this->impl->t.begin (), this->impl->t.end (),
s.impl->t.begin (), s.impl->t.end (),
inserter (news, news.begin ()));
impl->t = news;
this->impl->t = news;
return *this;
}
template<class T> set<T> &
set<T>::operator ^= (const set<T> &s)
set<T>::operator ^= (const set &s)
{
#if 0
printf ("before:\n");
printf ("this:");
for (typename std::set<T>::const_iterator i = impl->t.begin (); i != impl->t.end (); i ++)
for (typename std::set<T>::const_iterator i = this->impl->t.begin (); i != this->impl->t.end (); i ++)
printf (" %d", *i);
printf ("\n");
printf ("s:");
@ -243,25 +139,25 @@ set<T>::operator ^= (const set<T> &s)
#endif
#if 1
typename std::set<T>::const_iterator i = impl->t.begin (),
iend = impl->t.end (),
typename std::set<T>::const_iterator i = this->impl->t.begin (),
iend = this->impl->t.end (),
j = s.impl->t.begin (),
jend = s.impl->t.end ();
while (i != iend && j != jend && *i == *j)
{
impl->t.erase (i);
i = impl->t.begin ();
this->impl->t.erase (i);
i = this->impl->t.begin ();
j ++;
}
if (i == iend)
impl->t.insert (j, jend);
this->impl->t.insert (j, jend);
else
{
if (j != jend && *j < *i)
{
i = impl->t.insert (*j).first;
i = this->impl->t.insert (*j).first;
j ++;
}
@ -274,14 +170,14 @@ set<T>::operator ^= (const set<T> &s)
{
while (j != jend)
{
iprev = impl->t.insert (iprev, *j);
iprev = this->impl->t.insert (iprev, *j);
j ++;
}
break;
}
else if (*i == *j)
{
impl->t.erase (i);
this->impl->t.erase (i);
i = iprev;
j ++;
}
@ -289,12 +185,12 @@ set<T>::operator ^= (const set<T> &s)
{
while (j != jend && *j < *i)
{
iprev = impl->t.insert (iprev, *j);
iprev = this->impl->t.insert (iprev, *j);
j ++;
}
if (j != jend && *j == *i)
{
impl->t.erase (i);
this->impl->t.erase (i);
i = iprev;
j ++;
}
@ -305,37 +201,19 @@ set<T>::operator ^= (const set<T> &s)
#if 0
std::set<T> news;
std::set_symmetric_difference (impl->t.begin (), impl->t.end (),
std::set_symmetric_difference (this->impl->t.begin (), this->impl->t.end (),
s.impl->t.begin (), s.impl->t.end (),
inserter (news, news.begin ()));
impl->t = news;
this->impl->t = news;
#endif
#if 0
printf ("after:\n");
printf ("this:");
for (typename std::set<T>::const_iterator i = impl->t.begin (); i != impl->t.end (); i ++)
for (typename std::set<T>::const_iterator i = this->impl->t.begin (); i != this->impl->t.end (); i ++)
printf (" %d", *i);
printf ("\n");
#endif
return *this;
}
template<class T> void
set<T>::write_self (writer &w) const
{
write (w, card ());
for (const_iter i = *this; i; i ++)
write (w, i.val ());
}
template<class T> hash_t
set<T>::hash_self () const
{
hash_t h = hash (card ());
unsigned j = 0;
for (const_iter i = *this; i && j < 10; i ++, j ++)
h = hash_combine (h, hash (i.val ()));
return h;
}

149
lib/set_wrapper.h Normal file
View File

@ -0,0 +1,149 @@
/* wrapper for STL maps */
template<class S, class T> class set_wrapper_iter;
template<class S, class T> class set_wrapper_const_iter;
template<class S, class T>
class set_wrapper
{
friend class set_wrapper_iter<S, T>;
friend class set_wrapper_const_iter<S, T>;
protected:
class set_wrapper_impl : public refcounted
{
public:
S t;
};
ptr<set_wrapper_impl> impl;
public:
typedef set_wrapper_iter<S, T> iter;
typedef set_wrapper_const_iter<S, T> const_iter;
public:
set_wrapper () : impl(new set_wrapper_impl) { }
set_wrapper (unsigned dummy_size) : impl(new set_wrapper_impl) { }
set_wrapper (const set_wrapper &s) : impl(s.impl) { }
set_wrapper (copy, const set_wrapper &s) : impl(new set_wrapper_impl) { impl->t = S (s.impl->t); }
set_wrapper (reader &r);
~set_wrapper () { }
set_wrapper &operator = (const set_wrapper &s) { impl = s.impl; return *this; }
T pop ()
{
typename S::const_iterator i = impl->t.begin ();
assert (i != impl->t.end ());
T tmp = *i;
impl->t.erase (i);
return tmp;
}
bool is_empty () const { return impl->t.empty (); }
unsigned card () const { return impl->t.size (); }
const T &head () const;
const T &tail () const;
void clear () { impl->t.clear (); }
void push (const T &v) { assert (impl->t.find (v) == impl->t.end ()); impl->t.insert (v); }
void operator += (const T &v) { impl->t.insert (v); }
void operator -= (const T &v) { impl->t.erase (v); }
void yank (const T &v) { assert (operator % (v)); impl->t.erase (v); }
bool operator % (const T &v) const { return impl->t.find (v) != impl->t.end (); }
bool operator () (const T &v) const { return operator % (v); }
void write_self (writer &w) const;
hash_t hash_self () const;
};
template<class S, class T>
class set_wrapper_iter
{
ptr<typename set_wrapper<S, T>::set_wrapper_impl> impl;
typename S::const_iterator i, end;
bool deleted;
public:
set_wrapper_iter (set_wrapper<S, T> &s) : impl(s.impl), i(s.impl->t.begin ()), end(s.impl->t.end ()), deleted(0) { }
~set_wrapper_iter () { }
void del ()
{
assert (!deleted);
typename S::const_iterator iprev = i ++;
impl->t.erase (iprev);
deleted = 1;
}
const T &val () const { assert (!deleted); return *i; }
operator bool () const { assert (!deleted); return i != end; }
set_wrapper_iter &operator ++ () { if (deleted) deleted = 0; else i ++; return *this; }
void operator ++ (int) { operator ++ (); }
};
template<class S, class T>
class set_wrapper_const_iter
{
ptr<const typename set_wrapper<S, T>::set_wrapper_impl> impl;
typename S::const_iterator i, end;
public:
set_wrapper_const_iter (const set_wrapper<S, T> &s) : impl(s.impl), i(s.impl->t.begin ()), end(s.impl->t.end ()) { }
~set_wrapper_const_iter () { }
const T &val () const { return *i; }
operator bool () const { return i != end; }
set_wrapper_const_iter &operator ++ () { i ++; return *this; }
void operator ++ (int) { i ++; }
};
template<class S, class T>
set_wrapper<S, T>::set_wrapper (reader &r)
{
unsigned n;
read (r, n);
T x;
for (unsigned i = 0; i < n; i ++)
{
read (r, x);
push (x);
}
}
template<class S, class T> const T &
set_wrapper<S, T>::head () const
{
set_wrapper_const_iter<S, T> i = *this;
assert (i);
return i.val ();
}
template<class S, class T> const T &
set_wrapper<S, T>::tail () const
{
typename S::const_reverse_iterator i = impl->t.rbegin ();
assert (i != impl->t.rend ());
return *i;
}
template<class S, class T> void
set_wrapper<S, T>::write_self (writer &w) const
{
write (w, card ());
for (const_iter i = *this; i; i ++)
write (w, i.val ());
}
template<class S, class T> hash_t
set_wrapper<S, T>::hash_self () const
{
hash_t h = hash (card ());
unsigned j = 0;
for (const_iter i = *this; i && j < 10; i ++, j ++)
h = hash_combine (h, hash (i.val ()));
return h;
}

4
lib/vector.h
View File

@ -36,8 +36,10 @@ public:
vector &operator = (const vector &v) { unref (); ref (v.d); return *this; }
bool operator < (const vector &v) const;
bool operator == (const vector &v) const;
bool operator != (const vector &v) const { return !operator == (v); }
bool operator < (const vector &v) const;
bool operator % (unsigned i) { return d && i < d->n; }

98
main.cpp
View File

@ -60,14 +60,14 @@ test_ring (int p)
if (x != 0 && x | y)
{
R q = y.div (x);
R q = y.divide_exact (x);
assert (y == q * x);
}
if (x != 0 || y != 0)
{
triple<R, R, R> t = x.extended_gcd (y);
assert (t.first == t.second*x + t.third*y);
tuple<R, R, R> t = x.extended_gcd (y);
assert (get<0> (t) == get<1> (t)*x + get<2> (t)*y);
}
for (int k = -n; k <= n; k ++)
@ -127,6 +127,97 @@ rank_lte (multivariate_laurentpoly<Z> p,
int
main ()
{
basedvector<int, 1> v (4);
v[1] = 2;
v[2] = -1;
v[3] = 0xbf32813;
v[4] = -352182;
vector<int> sleb (512);
for (unsigned i = 0; i < 512; i ++)
sleb[i] = ((int)i << 23);
printf ("sleb:\n");
for (unsigned i = 0; i < 512; i ++)
printf (" %d\n", sleb[i]);
vector<unsigned> uleb (512);
for (unsigned i = 0; i < 512; i ++)
uleb[i] = ((unsigned)i << 23);
printf ("uleb:\n");
for (unsigned i = 0; i < 512; i ++)
printf (" %u\n", uleb[i]);
polynomial<Z> one (1);
polynomial<Z> x (1, 1);
polynomial<Z> bigp (Z (367521));
polynomial<Z> t = x + bigp*one;
polynomial<Z> p = (t*t*t + t*t + t + one)*(bigp*t*t + bigp*bigp*t + bigp*bigp*bigp)*(bigp*bigp*t*t*t + bigp*t*t + t + one);
display ("p: ", p);
{
file_writer w ("test.dat");
write (w, v);
write (w, p);
write (w, sleb);
write (w, uleb);
}
{
gzfile_writer w ("test.2.dat.gz");
write (w, v);
write (w, p);
write (w, sleb);
write (w, uleb);
}
system ("gzip -cd test.2.dat.gz > test.2.dat");
{
file_reader r ("test.dat");
basedvector<int, 1> v2 (r);
polynomial<Z> p2 (r);
vector<int> sleb2 (r);
printf ("sleb2:\n");
for (unsigned i = 0; i < 512; i ++)
printf (" %d\n", sleb2[i]);
vector<unsigned> uleb2 (r);
assert (v == v2);
assert (p == p2);
assert (sleb == sleb2);
assert (uleb == uleb2);
}
system ("gzip -c9 test.dat > test.dat.gz");
{
gzfile_reader r ("test.dat.gz");
basedvector<int, 1> v2 (r);
polynomial<Z> p2 (r);
vector<int> sleb2 (r);
vector<unsigned> uleb2 (r);
assert (v == v2);
assert (p == p2);
assert (sleb == sleb2);
assert (uleb == uleb2);
}
#if 0
#if 0
test_ring<Z> (0);
test_ring<polynomial<Z> > (0);
test_field<Z2> ();
test_field<Zp<7> > ();
test_field<Q> ();
// test_field<fraction_field<Zp<7> > > ();
#endif
#if 0
for (unsigned i = 1; i <= 10; i ++)
for (unsigned j = 1; j <= rolfsen_crossing_knots (i); j ++)
@ -178,4 +269,5 @@ main ()
if (! rank_lte (E3_p, tt_p))
printf (" > rank E2 > rank tt!!\n");
}
#endif
}

2
spanning_tree_complex.h
View File

@ -39,7 +39,7 @@ public:
tree_generators (const spanning_tree_complex<F> &c_) : c(c_) { }
~tree_generators () { }
tree_generators &operator = (const tree_generators &); // doesn't exist
tree_generators &operator = (const tree_generators &) = delete;
unsigned dim () const { return c.trees.size (); }
unsigned free_rank () const { return c.trees.size (); }

8
sseq.h
View File

@ -34,6 +34,7 @@ class sseq_bounds
&& minq == b.minq
&& maxq == b.maxq;
}
bool operator != (const sseq_bounds &b) const { return !operator == (b); }
};
class sseq_page
@ -52,6 +53,8 @@ class sseq_page
~sseq_page () { }
bool operator == (const sseq_page &pg) const { return rank == pg.rank && im_rank == pg.im_rank; }
bool operator != (const sseq_page &pg) const { return !operator == (pg); }
bool equal_as_spaces (const sseq_page &pg) const { return rank == pg.rank; }
unsigned total_rank () const;
@ -95,6 +98,9 @@ class sseq
unsigned homological_width () const { return pages[1].homological_width (bounds); }
bool operator == (const sseq &ss) const { return bounds == ss.bounds && pages == ss.pages; }
bool operator != (const sseq &ss) const { return !operator == (ss); }
bool equal_as_spaces (const sseq &ss) const;
void texshow (FILE *fp, std::string name);
@ -121,7 +127,7 @@ public:
{ }
~simplified_complex_generators () { }
simplified_complex_generators &operator = (const simplified_complex_generators &); // doesn't exist
simplified_complex_generators &operator = (const simplified_complex_generators &) = delete;
unsigned dim () const { return new_n; }
unsigned free_rank () const { return new_n; }

62
todo.txt
View File

@ -13,10 +13,8 @@ in knotkit/
deepcopy
in lib/
- add hashset
- between interoperation between sets that require bounds (bitset,
ullmanset) and those that don't (set, hashset)
- add make_pair, etc.
in algebra/
- linear_combnation can be more efficient (eg no searching when
@ -25,3 +23,63 @@ in algebra/
- cleaner interface for gcd, etc. in fraction_field
- support kernel, cokernel of torsion modules
- change gcd et al so gcd is always positive
- split linear_combination into internal and external versions
git:
- fix bug in Josh's version
- make this master, merge into Josh's version
- merge in square to master => then write paper!
- merge in other improvements (sped up linear algebra? multivariate (laurent) polynomial?)
- should exponents on polynomials be Z or unsigned?
general:
- unify simplify_chain_complex, sseq, kernel/image/homology (as much as possible)
- sseq over Z
- quadratic linear solver (enumerator?)
- classes should either COPY or fully SHARE, but not some of each
(e.g. knot_diagram, resolution_diagram, etc.) -- this is the right
semantics.
- clean up/delete setcommon, mapcommon
c++11:
- make vector wrap std::vector (probably faster)
- use tuple instead of pair, triple; and use tie, a great idiom
- standardize ring, field interface so test_ring works for everything
- get clear on default semantics: prefer default when possible
- standardize use of {} for initializers
- initializer_list for container types
- support for iterator
notes:
all rings (R): multivariate_laurentpoly<R>
fields (F): Z2 Zp Q fraction_field<E> (for just pids?)
euclidean domains (E): Z polynomial<F>
euclidean domain interface:
num/demon : denom must be a unit
= num.operator / (denom)
denom.divides (num)
denom | num
num.divide_exact (denom)
(q, r) = num.divide_with_remainder (denom)
(q, r) = num / denom
(q, r) = num.operator / (denom)
satisfies r = 0 or f(r) < f(denom) and num = q*denom + r
gcd (a, b)
lcm (a, b)
r = num.mod (denom)
satisfies r = 0 or f(r) < f(denom)
(d, s, t) = a.extended_gcd (b)
satifies d is the gcd and d = a*s + b*t