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AVec
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1995-06-16
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398 lines
// This may look like C code, but it is really -*- C++ -*-
/*
Copyright (C) 1988 Free Software Foundation
written by Doug Lea (dl@rocky.oswego.edu)
This file is part of the GNU C++ Library. This library is free
software; you can redistribute it and/or modify it under the terms of
the GNU Library General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version. This library is distributed in the hope
that it will be useful, but WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef __GNUG__
#pragma implementation
#endif
#include <stream.h>
#include <builtin.h>
#include "<T>.AVec.h"
/*
The following brought to you by the department of redundancy department
*/
<T>AVec& <T>AVec::operator = (const <T>AVec& v)
{
if (len != 0 && len != v.capacity())
error("nonconformant vectors.");
if (len == 0)
s = new <T> [len = v.capacity()];
if (s != v.vec())
{
for (int i = 0; i < len; ++i)
s[i] = v.vec()[i];
}
return *this;
}
<T>AVec& <T>AVec::operator = (<T&> f)
{
for (int i = 0; i < len; ++i) s[i] = f;
return *this;
}
<T>AVec concat(<T>AVec & a, <T>AVec & b)
{
int newl = a.capacity() + b.capacity();
<T>* news = new <T> [newl];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
while (t < top) *p++ = *t++;
top = &(b.vec()[b.capacity()]);
t = b.vec();
while (t < top) *p++ = *t++;
return <T>AVec(newl, news);
}
<T>AVec combine(<T>Combiner f, <T>AVec& a, <T>AVec& b)
{
int newl = (a.capacity() < b.capacity())? a.capacity() : b.capacity();
<T>* news = new <T> [newl];
<T>* p = news;
<T>* top = &(a.vec()[newl]);
<T>* t = a.vec();
<T>* u = b.vec();
while (t < top) *p++ = (*f)(*t++, *u++);
return <T>AVec(newl, news);
}
<T>AVec reverse(<T>AVec& a)
{
<T>* news = new <T> [a.capacity()];
if (a.capacity() != 0)
{
<T>* lo = news;
<T>* hi = &(news[a.capacity() - 1]);
while (lo < hi)
{
<T> tmp = *lo;
*lo++ = *hi;
*hi-- = tmp;
}
}
return <T>AVec(a.capacity(), news);
}
<T>AVec map(<T>Mapper f, <T>AVec& a)
{
<T>* news = new <T> [a.capacity()];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
while(t < top) *p++ = (*f)(*t++);
return <T>AVec(a.capacity(), news);
}
<T>AVec <T>AVec::at(int from, int n)
{
int to;
if (n < 0)
{
n = len - from;
to = len - 1;
}
else
to = from + n - 1;
if ((unsigned)from > (unsigned)to)
range_error();
<T>* news = new <T> [n];
<T>* p = news;
<T>* t = &(s[from]);
<T>* top = &(s[to]);
while (t <= top) *p++ = *t++;
return <T>AVec(n, news);
}
<T>AVec merge(<T>AVec & a, <T>AVec & b, <T>Comparator f)
{
int newl = a.capacity() + b.capacity();
<T>* news = new <T> [newl];
<T>* p = news;
<T>* topa = &(a.vec()[a.capacity()]);
<T>* as = a.vec();
<T>* topb = &(b.vec()[b.capacity()]);
<T>* bs = b.vec();
for (;;)
{
if (as >= topa)
{
while (bs < topb) *p++ = *bs++;
break;
}
else if (bs >= topb)
{
while (as < topa) *p++ = *as++;
break;
}
else if ((*f)(*as, *bs) <= 0)
*p++ = *as++;
else
*p++ = *bs++;
}
return <T>AVec(newl, news);
}
<T>AVec operator + (<T>AVec& a, <T>AVec& b)
{
a.check_len(b.capacity());
<T>* news = new <T> [a.capacity()];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
<T>* u = b.vec();
while (t < top) *p++ = *t++ + *u++;
return <T>AVec(a.capacity(), news);
}
<T>AVec operator - (<T>AVec& a, <T>AVec& b)
{
a.check_len(b.capacity());
<T>* news = new <T> [a.capacity()];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
<T>* u = b.vec();
while (t < top) *p++ = *t++ - *u++;
return <T>AVec(a.capacity(), news);
}
<T>AVec product (<T>AVec& a, <T>AVec& b)
{
a.check_len(b.capacity());
<T>* news = new <T> [a.capacity()];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
<T>* u = b.vec();
while (t < top) *p++ = *t++ * *u++;
return <T>AVec(a.capacity(), news);
}
<T>AVec quotient(<T>AVec& a, <T>AVec& b)
{
a.check_len(b.capacity());
<T>* news = new <T> [a.capacity()];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
<T>* u = b.vec();
while (t < top) *p++ = *t++ / *u++;
return <T>AVec(a.capacity(), news);
}
<T>AVec operator + (<T>AVec& a, <T&> b)
{
<T>* news = new <T> [a.capacity()];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
while (t < top) *p++ = *t++ + b;
return <T>AVec(a.capacity(), news);
}
<T>AVec operator - (<T>AVec& a, <T&> b)
{
<T>* news = new <T> [a.capacity()];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
while (t < top) *p++ = *t++ - b;
return <T>AVec(a.capacity(), news);
}
<T>AVec operator * (<T>AVec& a, <T&> b)
{
<T>* news = new <T> [a.capacity()];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
while (t < top) *p++ = *t++ * b;
return <T>AVec(a.capacity(), news);
}
<T>AVec operator / (<T>AVec& a, <T&> b)
{
<T>* news = new <T> [a.capacity()];
<T>* p = news;
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
while (t < top) *p++ = *t++ / b;
return <T>AVec(a.capacity(), news);
}
<T>AVec <T>AVec::operator - ()
{
<T>* news = new <T> [len];
<T>* p = news;
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) *p++ = -(*t++);
return <T>AVec(len, news);
}
<T>AVec& <T>AVec::operator += (<T>AVec& b)
{
check_len(b.capacity());
<T>* u = b.vec();
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) *t++ += *u++;
return *this;
}
<T>AVec& <T>AVec::operator -= (<T>AVec& b)
{
check_len(b.capacity());
<T>* u = b.vec();
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) *t++ -= *u++;
return *this;
}
<T>AVec& <T>AVec::product(<T>AVec& b)
{
check_len(b.capacity());
<T>* u = b.vec();
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) *t++ *= *u++;
return *this;
}
<T>AVec& <T>AVec::quotient(<T>AVec& b)
{
check_len(b.capacity());
<T>* u = b.vec();
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) *t++ /= *u++;
return *this;
}
<T>AVec& <T>AVec::operator += (<T&> b)
{
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) *t++ += b;
return *this;
}
<T>AVec& <T>AVec::operator -= (<T&> b)
{
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) *t++ -= b;
return *this;
}
<T>AVec& <T>AVec::operator *= (<T&> b)
{
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) *t++ *= b;
return *this;
}
<T>AVec& <T>AVec::operator /= (<T&> b)
{
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) *t++ /= b;
return *this;
}
<T> <T>AVec::max()
{
if (len == 0)
return 0;
<T>* top = &(s[len]);
<T>* t = s;
<T> res = *t++;
for (; t < top; ++t) if (*t > res) res = *t;
return res;
}
int <T>AVec::max_index()
{
if (len == 0)
return -1;
int ind = 0;
for (int i = 1; i < len; ++i)
if (s[i] > s[ind])
ind = i;
return ind;
}
<T> <T>AVec::min()
{
if (len == 0)
return 0;
<T>* top = &(s[len]);
<T>* t = s;
<T> res = *t++;
for (; t < top; ++t) if (*t < res) res = *t;
return res;
}
int <T>AVec::min_index()
{
if (len == 0)
return -1;
int ind = 0;
for (int i = 1; i < len; ++i)
if (s[i] < s[ind])
ind = i;
return ind;
}
<T> <T>AVec::sum()
{
<T> res = 0;
<T>* top = &(s[len]);
<T>* t = s;
while (t < top) res += *t++;
return res;
}
<T> <T>AVec::sumsq()
{
<T> res = 0;
<T>* top = &(s[len]);
<T>* t = s;
for (; t < top; ++t) res += *t * *t;
return res;
}
<T> operator * (<T>AVec& a, <T>AVec& b)
{
a.check_len(b.capacity());
<T>* top = &(a.vec()[a.capacity()]);
<T>* t = a.vec();
<T>* u = b.vec();
<T> res = 0;
while (t < top) res += *t++ * *u++;
return res;
}