/usr/include/NTL/vector.h is in libntl-dev 9.9.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#define NTL_vector__H
#include <NTL/tools.h>
#include <new>
struct _ntl_VectorHeader {
long length;
long alloc;
long init;
long fixed;
};
union _ntl_AlignedVectorHeader {
_ntl_VectorHeader h;
double x1;
long x2;
char *x3;
long double x4;
};
#define NTL_VECTOR_HEADER_SIZE (sizeof(_ntl_AlignedVectorHeader))
#define NTL_VEC_HEAD(p) (& (((_ntl_AlignedVectorHeader *) (p.rep))[-1].h))
#ifndef NTL_RANGE_CHECK
#define NTL_RANGE_CHECK_CODE(i)
#else
#define NTL_RANGE_CHECK_CODE(i) if ((i) < 0 || !_vec__rep || (i) >= NTL_VEC_HEAD(_vec__rep)->length) LogicError("index out of range in Vec");
#endif
// vectors are allocated in chunks of this size
#ifndef NTL_VectorMinAlloc
#define NTL_VectorMinAlloc (4)
#endif
// vectors are always expanded by at least this ratio
#ifndef NTL_VectorExpansionRatio
#define NTL_VectorExpansionRatio (1.2)
#endif
// controls initialization during input
#ifndef NTL_VectorInputBlock
#define NTL_VectorInputBlock 50
#endif
NTL_OPEN_NNS
template<class T>
void BlockDestroy(T* p, long n)
{
for (long i = 0; i < n; i++)
p[i].~T();
// NOTE: this routine is only invoked through a Vec destructor
// or a scope guard destructor, both of which are noexcept destructors.
// therefore, if ~T() should throw, the program will terminate
}
template<class T>
void BlockConstruct(T* p, long n)
{
long i;
NTL_SCOPE(guard) { BlockDestroy(p, i); };
for (i = 0; i < n; i++)
(void) new(&p[i]) T;
guard.relax();
// NOTE: we invoke T rather than T(), which would ensure
// POD types get zeroed out, but only in compilers that
// comply with C++03, which does not include MS compilers.
// So we just use T, which is less expensive, and it is better
// not to assume POD types get initialized.
}
template<class T>
void BlockConstructFromVec(T* p, long n, const T* q)
{
long i;
NTL_SCOPE(guard) { BlockDestroy(p, i); };
for (i = 0; i < n; i++)
(void) new(&p[i]) T(q[i]);
guard.relax();
}
template<class T>
void BlockConstructFromObj(T* p, long n, const T& q)
{
long i;
NTL_SCOPE(guard) { BlockDestroy(p, i); };
for (i = 0; i < n; i++)
(void) new(&p[i]) T(q);
guard.relax();
}
template<class T>
class Vec {
public:
class _vec_deleter {
public:
static void apply(T*& p) {
if (p) {
NTL_SNS free(((char *) p) - sizeof(_ntl_AlignedVectorHeader));
p = 0;
}
}
};
WrappedPtr<T, _vec_deleter> _vec__rep;
Vec() { }
Vec(INIT_SIZE_TYPE, long n) { SetLength(n); }
Vec(INIT_SIZE_TYPE, long n, const T& a) { SetLength(n, a); }
Vec(const Vec<T>& a) { *this = a; }
Vec<T>& operator=(const Vec<T>& a);
~Vec();
void kill();
void SetMaxLength(long n);
void FixLength(long n);
void FixAtCurrentLength();
void QuickSetLength(long n) { NTL_VEC_HEAD(_vec__rep)->length = n; }
void SetLength(long n) {
if (_vec__rep && !NTL_VEC_HEAD(_vec__rep)->fixed &&
n >= 0 && n <= NTL_VEC_HEAD(_vec__rep)->init)
NTL_VEC_HEAD(_vec__rep)->length = n;
else
DoSetLength(n);
}
void SetLength(long n, const T& a) {
if (_vec__rep && !NTL_VEC_HEAD(_vec__rep)->fixed &&
n >= 0 && n <= NTL_VEC_HEAD(_vec__rep)->init)
NTL_VEC_HEAD(_vec__rep)->length = n;
else
DoSetLength(n, a);
}
template<class F>
void SetLengthAndApply(long n, F f) {
if (_vec__rep && !NTL_VEC_HEAD(_vec__rep)->fixed &&
n >= 0 && n <= NTL_VEC_HEAD(_vec__rep)->init)
NTL_VEC_HEAD(_vec__rep)->length = n;
else
DoSetLengthAndApply(n, f);
}
long length() const
{ return (!_vec__rep) ? 0 : NTL_VEC_HEAD(_vec__rep)->length; }
long MaxLength() const
{ return (!_vec__rep) ? 0 : NTL_VEC_HEAD(_vec__rep)->init; }
long allocated() const
{ return (!_vec__rep) ? 0 : NTL_VEC_HEAD(_vec__rep)->alloc; }
long fixed() const
{ return _vec__rep && NTL_VEC_HEAD(_vec__rep)->fixed; }
T& operator[](long i)
{
NTL_RANGE_CHECK_CODE(i)
return _vec__rep[i];
}
const T& operator[](long i) const
{
NTL_RANGE_CHECK_CODE(i)
return _vec__rep[i];
}
T& RawGet(long i)
{
return _vec__rep[i];
}
const T& RawGet(long i) const
{
return _vec__rep[i];
}
T& operator()(long i) { return (*this)[i-1]; }
const T& operator()(long i) const { return (*this)[i-1]; }
const T* elts() const { return _vec__rep; }
T* elts() { return _vec__rep; }
Vec(Vec<T>& x, INIT_TRANS_TYPE)
{ _vec__rep.swap(x._vec__rep); }
long position(const T& a) const;
long position1(const T& a) const;
void swap(Vec<T>& y);
void append(const T& a);
void append(const Vec<T>& w);
// Some compatibility with vec_GF2
const T& get(long i) const
{ return (*this)[i]; }
void put(long i, const T& a)
{ (*this)[i] = a; }
// Some STL compatibility
typedef T value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef value_type *iterator;
typedef const value_type *const_iterator;
const T* data() const { return elts(); }
T* data() { return elts(); }
T* begin() { return elts(); }
const T* begin() const { return elts(); }
T* end() {
if (elts())
return elts() + length();
else
return 0;
}
const T* end() const {
if (elts())
return elts() + length();
else
return 0;
}
T& at(long i) {
if ((i) < 0 || !_vec__rep || (i) >= NTL_VEC_HEAD(_vec__rep)->length)
LogicError("index out of range in Vec");
return _vec__rep[i];
}
const T& at(long i) const {
if ((i) < 0 || !_vec__rep || (i) >= NTL_VEC_HEAD(_vec__rep)->length)
LogicError("index out of range in Vec");
return _vec__rep[i];
}
class Watcher {
public:
Vec& watched;
explicit
Watcher(Vec& _watched) : watched(_watched) {}
~Watcher()
{
if (watched.MaxLength() > NTL_RELEASE_THRESH) watched.kill();
}
};
private:
void DoSetLength(long n);
void DoSetLength(long n, const T& a);
template<class F>
void DoSetLengthAndApply(long n, F& f);
void AdjustLength(long n) { if (_vec__rep) NTL_VEC_HEAD(_vec__rep)->length = n; }
void AdjustAlloc(long n) { if (_vec__rep) NTL_VEC_HEAD(_vec__rep)->alloc = n; }
void AdjustMaxLength(long n) { if (_vec__rep) NTL_VEC_HEAD(_vec__rep)->init = n; }
void AllocateTo(long n); // reserves space for n items
void Init(long n); // make sure first n entries are initialized
void Init(long n, const T* src); // same, but use src
void Init(long n, const T& src); // same, but use src
template<class F>
void InitAndApply(long n, F& f);
};
#if (!defined(NTL_CLEAN_PTR))
template<class T>
long Vec<T>::position(const T& a) const
{
if (!_vec__rep) return -1;
long num_alloc = NTL_VEC_HEAD(_vec__rep)->alloc;
long num_init = NTL_VEC_HEAD(_vec__rep)->init;
if (&a < _vec__rep || &a >= _vec__rep + num_alloc) return -1;
long res = (&a) - _vec__rep;
if (res < 0 || res >= num_alloc ||
_vec__rep + res != &a) return -1;
if (res >= num_init)
LogicError("position: reference to uninitialized object");
return res;
}
template<class T>
long Vec<T>::position1(const T& a) const
{
if (!_vec__rep) return -1;
long len = NTL_VEC_HEAD(_vec__rep)->length;
if (&a < _vec__rep || &a >= _vec__rep + len) return -1;
long res = (&a) - _vec__rep;
if (res < 0 || res >= len ||
_vec__rep + res != &a) return -1;
return res;
}
#else
template<class T>
long Vec<T>::position(const T& a) const
{
if (!_vec__rep) return -1;
long num_alloc = NTL_VEC_HEAD(_vec__rep)->alloc;
long num_init = NTL_VEC_HEAD(_vec__rep)->init;
long res;
res = 0;
while (res < num_alloc && _vec__rep + res != &a) res++;
if (res >= num_alloc) return -1;
if (res >= num_init)
LogicError("position: reference to uninitialized object");
return res;
}
template<class T>
long Vec<T>::position1(const T& a) const
{
if (!_vec__rep) return -1;
long len = NTL_VEC_HEAD(_vec__rep)->length;
long res;
res = 0;
while (res < len && _vec__rep + res != &a) res++;
if (res >= len) return -1;
return res;
}
#endif
template<class T>
void Vec<T>::AllocateTo(long n)
{
long m;
if (n < 0) {
LogicError("negative length in vector::SetLength");
}
if (NTL_OVERFLOW(n, sizeof(T), 0))
ResourceError("excessive length in vector::SetLength");
if (_vec__rep && NTL_VEC_HEAD(_vec__rep)->fixed) {
if (NTL_VEC_HEAD(_vec__rep)->length == n)
return;
else
LogicError("SetLength: can't change this vector's length");
}
if (n == 0) {
return;
}
if (!_vec__rep) {
m = ((n+NTL_VectorMinAlloc-1)/NTL_VectorMinAlloc) * NTL_VectorMinAlloc;
char *p = (char *) NTL_SNS_MALLOC(m, sizeof(T), sizeof(_ntl_AlignedVectorHeader));
if (!p) {
MemoryError();
}
_vec__rep = (T *) (p + sizeof(_ntl_AlignedVectorHeader));
NTL_VEC_HEAD(_vec__rep)->length = 0;
NTL_VEC_HEAD(_vec__rep)->alloc = m;
NTL_VEC_HEAD(_vec__rep)->init = 0;
NTL_VEC_HEAD(_vec__rep)->fixed = 0;
}
else if (n > NTL_VEC_HEAD(_vec__rep)->alloc) {
m = max(n, long(NTL_VectorExpansionRatio*NTL_VEC_HEAD(_vec__rep)->alloc));
m = ((m+NTL_VectorMinAlloc-1)/NTL_VectorMinAlloc) * NTL_VectorMinAlloc;
char *p = ((char *) _vec__rep.rep) - sizeof(_ntl_AlignedVectorHeader);
p = (char *) NTL_SNS_REALLOC(p, m, sizeof(T), sizeof(_ntl_AlignedVectorHeader));
if (!p) {
MemoryError();
}
_vec__rep = (T *) (p + sizeof(_ntl_AlignedVectorHeader));
NTL_VEC_HEAD(_vec__rep)->alloc = m;
}
}
template<class T>
void Vec<T>::Init(long n)
{
long num_init = MaxLength();
if (n <= num_init) return;
BlockConstruct(_vec__rep + num_init, n-num_init);
AdjustMaxLength(n);
}
template<class T>
void Vec<T>::Init(long n, const T *src)
{
long num_init = MaxLength();
if (n <= num_init) return;
BlockConstructFromVec(_vec__rep + num_init, n-num_init, src);
AdjustMaxLength(n);
}
template<class T>
void Vec<T>::Init(long n, const T& src)
{
long num_init = MaxLength();
if (n <= num_init) return;
BlockConstructFromObj(_vec__rep + num_init, n-num_init, src);
AdjustMaxLength(n);
}
template<class T> template<class F>
void Vec<T>::InitAndApply(long n, F& f)
{
long num_init = MaxLength();
if (n <= num_init) return;
BlockConstruct(_vec__rep + num_init, n-num_init);
NTL_SCOPE(guard) { BlockDestroy(_vec__rep + num_init, n - num_init); };
long i;
for (i = num_init; i < n; i++)
f(_vec__rep[i]);
guard.relax();
AdjustMaxLength(n);
}
template<class T>
void Vec<T>::DoSetLength(long n)
{
AllocateTo(n);
Init(n);
AdjustLength(n);
}
template<class T>
void Vec<T>::DoSetLength(long n, const T& a)
{
// if vector gets moved, we have to worry about
// a aliasing a vector element
const T *src = &a;
long pos = -1;
if (n >= allocated()) pos = position(a);
AllocateTo(n);
if (pos != -1) src = elts() + pos;
Init(n, *src);
AdjustLength(n);
}
template<class T> template<class F>
void Vec<T>::DoSetLengthAndApply(long n, F& f)
{
AllocateTo(n);
InitAndApply(n, f);
AdjustLength(n);
}
template<class T>
void Vec<T>::SetMaxLength(long n)
{
long OldLength = length();
SetLength(n);
SetLength(OldLength);
}
template<class T>
void Vec<T>::FixLength(long n)
{
if (_vec__rep) LogicError("FixLength: can't fix this vector");
if (n < 0) LogicError("FixLength: negative length");
NTL_SCOPE(guard) { _vec__rep.kill(); };
if (n > 0)
SetLength(n);
else {
char *p = (char *) NTL_SNS_MALLOC(0, sizeof(T), sizeof(_ntl_AlignedVectorHeader));
if (!p) {
MemoryError();
}
_vec__rep = (T *) (p + sizeof(_ntl_AlignedVectorHeader));
NTL_VEC_HEAD(_vec__rep)->length = 0;
NTL_VEC_HEAD(_vec__rep)->init = 0;
NTL_VEC_HEAD(_vec__rep)->alloc = 0;
}
NTL_VEC_HEAD(_vec__rep)->fixed = 1;
guard.relax();
}
template<class T>
void Vec<T>::FixAtCurrentLength()
{
if (fixed()) return;
if (length() != MaxLength())
LogicError("FixAtCurrentLength: can't fix this vector");
if (_vec__rep)
NTL_VEC_HEAD(_vec__rep)->fixed = 1;
else
FixLength(0);
}
template<class T>
Vec<T>& Vec<T>::operator=(const Vec<T>& a)
{
if (this == &a) return *this;
long init = MaxLength();
long src_len = a.length();
const T *src = a.elts();
AllocateTo(src_len);
T *dst = elts();
if (src_len <= init) {
long i;
for (i = 0; i < src_len; i++)
dst[i] = src[i];
}
else {
long i;
for (i = 0; i < init; i++)
dst[i] = src[i];
Init(src_len, src+init);
}
AdjustLength(src_len);
return *this;
}
template<class T>
Vec<T>::~Vec()
{
if (!_vec__rep) return;
BlockDestroy(_vec__rep.rep, NTL_VEC_HEAD(_vec__rep)->init);
}
template<class T>
void Vec<T>::kill()
{
Vec<T> tmp;
this->swap(tmp);
}
template<class T>
void Vec<T>::swap(Vec<T>& y)
{
long xf = fixed();
long yf = y.fixed();
if (xf != yf ||
(xf && NTL_VEC_HEAD(_vec__rep)->length != NTL_VEC_HEAD(y._vec__rep)->length))
LogicError("swap: can't swap these vectors");
_vec__rep.swap(y._vec__rep);
}
template<class T>
void swap(Vec<T>& x, Vec<T>& y)
{
x.swap(y);
}
// EXCEPTIONS: provides strong ES
template<class T>
void Vec<T>::append(const T& a)
{
long len = length();
long init = MaxLength();
long src_len = 1;
// if vector gets moved, we have to worry about
// a aliasing a vector element
const T *src = &a;
long pos = -1;
if (len >= allocated()) pos = position(a);
AllocateTo(len+src_len);
// The logic here is copy-pasted from the append-vector
// logic...mostly
long i;
T *dst = elts();
if (pos != -1) src = dst + pos;
if (len+src_len <= init) {
for (i = 0; i < src_len; i++)
dst[i+len] = src[i];
}
else {
for (i = 0; i < init-len; i++)
dst[i+len] = src[i];
// make sure we use BlockConstructFromObj
Init(src_len+len, *src);
}
AdjustLength(len+src_len);
}
template<class T>
void append(Vec<T>& v, const T& a)
{
v.append(a);
}
template<class T>
void Vec<T>::append(const Vec<T>& w)
{
long len = length();
long init = MaxLength();
long src_len = w.length();
AllocateTo(len+src_len);
const T *src = w.elts();
T *dst = elts();
if (len+src_len <= init) {
long i;
for (i = 0; i < src_len; i++)
dst[i+len] = src[i];
}
else {
long i;
for (i = 0; i < init-len; i++)
dst[i+len] = src[i];
Init(src_len+len, src+init-len);
}
AdjustLength(len+src_len);
}
template<class T>
void append(Vec<T>& v, const Vec<T>& w)
{
v.append(w);
}
template<class T>
NTL_SNS istream & operator>>(NTL_SNS istream& s, Vec<T>& a)
{
Vec<T> ibuf;
long c;
long n;
if (!s) NTL_INPUT_ERROR(s, "bad vector input");
c = s.peek();
while (IsWhiteSpace(c)) {
s.get();
c = s.peek();
}
if (c != '[') {
NTL_INPUT_ERROR(s, "bad vector input");
}
n = 0;
ibuf.SetLength(0);
s.get();
c = s.peek();
while (IsWhiteSpace(c)) {
s.get();
c = s.peek();
}
while (c != ']' && !IsEOFChar(c)) {
if (n % NTL_VectorInputBlock == 0) ibuf.SetMaxLength(n + NTL_VectorInputBlock);
n++;
ibuf.SetLength(n);
if (!(s >> ibuf[n-1])) NTL_INPUT_ERROR(s, "bad vector input");
c = s.peek();
while (IsWhiteSpace(c)) {
s.get();
c = s.peek();
}
}
if (IsEOFChar(c)) NTL_INPUT_ERROR(s, "bad vector input");
s.get();
a = ibuf;
return s;
}
template<class T>
NTL_SNS ostream& operator<<(NTL_SNS ostream& s, const Vec<T>& a)
{
long i, n;
n = a.length();
s << '[';
for (i = 0; i < n; i++) {
s << a[i];
if (i < n-1) s << " ";
}
s << ']';
return s;
}
template<class T>
long operator==(const Vec<T>& a, const Vec<T>& b)
{
long n = a.length();
if (b.length() != n) return 0;
const T* ap = a.elts();
const T* bp = b.elts();
long i;
for (i = 0; i < n; i++) if (ap[i] != bp[i]) return 0;
return 1;
}
template<class T>
long operator!=(const Vec<T>& a, const Vec<T>& b)
{ return !(a == b); }
// conversions
template<class T, class S>
void conv(Vec<T>& x, const Vec<S>& a)
{
long n = a.length();
x.SetLength(n);
for (long i = 0; i < n; i++)
conv(x[i], a[i]);
}
NTL_CLOSE_NNS
#endif
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