?? chobsb.cpp
字號:
void chobsb(double a[], int n, double d[], double b[])
{
int i,j;
double sum;
for (i = 1; i<=n; i++)
{
sum = b[i];
for (j = 1; j<=i - 1; j++)
{
sum = sum - a[(i-1)*n+j] * b[j];
}
b[i] = sum;
}
for (i = n; i>=1; i--)
{
if (d[i] == 0.0)
{
cout<<" singular matrix";
return;
}
else
{
sum = b[i] / d[i];
}
for (j = i + 1; j<=n; j++)
{
sum = sum - a[(j-1)*n+i] * b[j];
}
b[i] = sum;
}
}
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