Microsoft Longhorn Reinvents Desktop Graphics

From games to the desktop itself, 3D graphics will be everywhere in the new Windows Longhorn OS. We've got a sneak peek at the new Windows Graphics Foundation (WGF) architecture that will make it happen.

Linux Takes on Windows Gaming

Review: Formerly known as WineX, Cedega 4.0 offers hope for Linux users who want to play graphics-heavy Windows games like Far Cry and Battlefield Vietnam. But how well does it really work -- and is it worth the monthly subscription?

The Evolving 3D Graphics Landscape

Graphics cards have more of an impact on overall performance than ever before, but the vast array of choices can be confusing. We help you sort through the mess and decide how much video muscle you really need.

The Evolving PC Audio Landscape With Intel's HD Audio coming, Microsoft planning changes for Longhorn audio, and a software DVD-Audio shipping, PC sound is in flux. We examine the present (and future) of PC audio. The Evolving Memory Landscape

# A Demo for computing Polynomial.
# (C) 2004, The Seeker

# ------------ poly.h -----------------------

#ifndef POLYNOM_H
#define POLYNOM_H

#define MAX_POLYNOM_ELEMENTS     250

typedef struct {
int coef;
int pow_x;
int pow_y;
} PType;

typedef struct {
int     n;
PType    *poly;
//POLYNOM     *next;
} POLYNOM;

typedef struct {
POLYNOM        *prev;
POLYNOM        polynom;
POLYNOM        *next;
} POLYNOMLIST;


#endif
# ------------------ end of poly.h ----------------------------

#------- poly.c ------------------
#include 
#include 
#include 
#include "poly.h"

const char *delim = " ";

int Polynom_GetInput(POLYNOM *plnm)
{
char buf[1024];
int i,j,n;
div_t divr;
char *p;
int a[3*MAX_POLYNOM_ELEMENTS];

//printf("Enter your polynomial variables (it is sequence of triples: c pow_x pow_y)\n");
printf("Enter Polynoms = ");
gets(buf);
if (strlen(buf) == 0) {
plnm->n = 0;
plnm->poly = NULL;
return 0;
}
n = 0;
if ((p=strtok(buf, delim)) != NULL) {
// found the first input
n=1;
a[0] = atoi(p);
}
while ((p=strtok(NULL, delim)) != NULL && n<3*max_polynom_elements)> 0) {
/* that's all the input.  Now, ensure the input is repetition of triplets
*/
divr = div(n,3);
if (divr.rem == 0) {
// yes, it is a sequence of triplet
plnm->poly = (PType*)malloc(n/3 * sizeof(PType));
if (plnm->poly == NULL)
exit(1);
plnm->n = n/3;
for(i=0; ipoly[j].coef = a[i];
plnm->poly[j].pow_x = a[i+1];
plnm->poly[j].pow_y = a[i+2];
}
}
return 1;
}
}
return 0;
}

int Polynom_Copy(const POLYNOM *src, POLYNOM *dest)
{
// destination polynom should not NULL
if (src==NULL || dest==NULL) return 0;
dest->poly = (PType *)malloc(src->n * sizeof(PType));
if (dest->poly) {
memcpy(dest->poly, src->poly, src->n * sizeof(PType));
return 1;
}
return 0;
}


void Polynom_Free(POLYNOM *p)
{
if (!p) return;
if (p->poly) {
free(p->poly);
p->n = 0;
p->poly = NULL;
}
}


void Polynom_Print(const POLYNOM *p)
{
int i;
char strc[50], strx[50], stry[50];
short sign;
char strsign[5];
short first_time=1;
int coef;

if (!p) return;
strx[0] = '\0';
stry[0] = '\0';
for(i=0; in; i++) {
coef = p->poly[i].coef;
// ignore coef=0
// using temporary var for sign is slightly faster than accessing structure of pointer p
if (coef != 0) {
sign = ( coef < first_time =" 0;">poly[i].pow_x !=0 || p->poly[i].pow_y !=0))
strcpy(strc, strsign);
else
sprintf(strc, "%s%0d", strsign, abs(coef));
if (p->poly[i].pow_x == 0)
strcpy(strx, "");
else if (p->poly[i].pow_x == 1)
strcpy(strx, "x");
else
sprintf(strx, "x^%-d", p->poly[i].pow_x);
if (p->poly[i].pow_y == 0)
strcpy(stry, "");
else if (p->poly[i].pow_y == 1)
strcpy(stry, "y");
else
sprintf(stry, "y^%-d", p->poly[i].pow_y);
//sprintf("%u%s%s");
printf("%s%s%s", strc, strx, stry);
}
}
printf("\n");
}


int Polynom_Add(PType *result, const PType P1, const PType P2)
{
if (result == NULL)
return 0;
if ((P1.pow_x == P2.pow_x) && (P1.pow_y == P2.pow_y)) {
// p1 & p2 have the same order of x,y
result->coef = P1.coef + P2.coef;
return 1;  
}
else {
return 0;
}
}

void Polynom_Simplify(POLYNOM *p1, POLYNOM *p2)
{
int i,j,k;


}


int main(int argc, char *argv[])
{
POLYNOM p1;
int i=0;

while (Polynom_GetInput(&p1)) {
//for(i=0; i

Linux on the PS2 by John Littler -- As consoles increase in power and alternate operating systems increase in functionality and flexibility, it's ever more attractive to port your favorite free operating system. In the case of Sony's PlayStation 2, the company even encourages it. John Littler explores Linux on the PS2, including hardware, installation, upgrades, alternatives, and game programming.