Category : C++ Source Code
Archive   : BLFMATH.ZIP
Filename : TSTVEC.CPP

 
Output of file : TSTVEC.CPP contained in archive : BLFMATH.ZIP
///////////////////////////////////////////////////////////////
// tstvec.cpp: Vector test program using integer vector math.
// Copyright(c) 1993 Azarona Software. All rights reserved.
///////////////////////////////////////////////////////////////
#include
#include "vector.h"

//
// Some sample vector math routines
//

template
void operator+=(Vector &v, const TYPE &x)
// Adds x to every element of v.
// ASSUMES TYPE has '+=' defined.
{
VecPtr elemptr(v.PtrToAll());
for (unsigned i = 0; i *elemptr += x;
elemptr++;
}
}

template
void Add(Vector &r, const Vector &a, const Vector &b)
// Adds vectors a and b together, storing result in r.
// The number of elements added is determined by the
// shortest length of all three vectors.
// ASSUMES that TYPE has '+' defined.
{
unsigned rlen = r.Length();
unsigned slen = a.Length();
if (rlen > slen) rlen = slen;
slen = b.Length();
if (rlen > slen) rlen = slen;
VecPtr rptr(r.PtrToAll());
VecPtr aptr(a.PtrToAll());
VecPtr bptr(b.PtrToAll());
for (unsigned i = 0; i *rptr = *aptr + *bptr;
rptr++;
aptr++;
bptr++;
}
}

template
Vector operator+(const Vector &a, const Vector &b)
// Adds vectors a and b together, returning the result (which
// has its data allocated on the heap.) The number of elements
// created is determined by the shortest length a and b.
{
unsigned rlen = a.Length();
unsigned slen = b.Length();
if (rlen > slen) rlen = slen;
Vector result(rlen);
Add(result, a, b);
return result;
}


template
void PrtVec(const Vector &v)
// Print out the elements of a vector
{
VecPtr cursor(v.PtrToAll());
unsigned i, len = v.Length();
for (i = 0; i cout << *cursor << ' ';
cursor++;
}
cout << '\n';
}

// BC++ needs the next statements, which generate functions
// for doing operations on vectors

void Add(Vector &r, const Vector &a, const Vector &b);
void operator+=(Vector &v, const int &x);
void PrtVec(const Vector &v);

// You need one of these statements for each type of vector:

INITNULLVEC(int);

// A low-level C array we'll copy

const int arr_size = 7;
int arr[arr_size] = {0, 1, 2, 3, 4, 5, 6};

void test()
{
cout << "Creating a vector\n";

Vector myvec(arr_size, arr);
cout << "myvec: "; PrtVec(myvec);

cout << "Creating a shared slice of every other element\n";

Vector everyother(myvec, SHARED, 4, 2);
cout << "everyother: "; PrtVec(everyother);

cout << "Creating a copied slice of every other element\n";

Vector cpslice(myvec, COPIED, 4, 2);
cout << "cpslice: "; PrtVec(cpslice);

cout << "Adding 10 to every other element\n";

everyother += 10;
cout << "myvec: "; PrtVec(myvec);
cout << "everyother: "; PrtVec(everyother);
cout << "cpslice: "; PrtVec(cpslice);

cout << "Adding all odd elements to even elements\n";

Vector odd(myvec, SHARED, 3, 2, 1);
Vector even(myvec, SHARED, 4, 2, 0);

cout << "Result: "; PrtVec(odd + even);
cout << "myvec: "; PrtVec(myvec);

cout << "Testing consistency checks for stride, length, and offset\n";

Vector tstslice(everyother, SHARED, 4, 2, 1);
cout << "everyother: "; PrtVec(everyother);
cout << "tstslice: "; PrtVec(tstslice);
}

main()
{
test();
return 0;
}



  3 Responses to “Category : C++ Source Code
Archive   : BLFMATH.ZIP
Filename : TSTVEC.CPP
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

    But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/