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AZEN-SGG 2025-04-17 15:43:13 +03:00
parent edb7e1adea
commit 08ef9070a4
1 changed files with 17 additions and 4 deletions
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21
2025.04.18/04Ex/solve.c
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@ -25,21 +25,24 @@ double t4_solve (
return DBL_MAX; return DBL_MAX;
Y[i+1] = (y_j - y_i) / (x_j - x_i); Y[i+1] = (y_j - y_i) / (x_j - x_i);
// printf ("I = %d, f(x%d, ... , x%d) = %lf\n", i, i-k+1, i+2, Y[i+1]); printf ("I = %d, f(x%d, ... , x%d) = %lf\n", i, i+1, i+2, Y[i+1]);
y_j = y_i; y_j = y_i;
x_j = x_i; x_j = x_i;
} }
for (int i = 1; i < n; ++i)
printf ("f(x%d, x%d) = %lf\n", i-1, i, Y[i]);
for (int k = 0; k < n-1; ++k) for (int k = 0; k < n-1; ++k)
{ {
double f_j = D[n-1]; double f_j = D[n-1];
// printf ("------- K = %d -------\n", k); printf ("------- K = %d -------\n", k);
for (int l = n*2-2; l >= k; --l) for (int l = n*2-3; l >= k; --l)
{ {
const int i = l>1; const int i = l >> 1;
const double x_i = X[i-k]; const double x_i = X[i-k];
double f_i; double f_i;
x_j = X[i+1]; x_j = X[i+1];
@ -51,10 +54,12 @@ double t4_solve (
{ {
f_i = D[i]; f_i = D[i];
Y[i+1] = (f_j - f_i) / (x_j - x_i); Y[i+1] = (f_j - f_i) / (x_j - x_i);
printf ("f(x%d, x%d, ..., x%d) = %lf\n", i-k, i-k, i+1, Y[i+1]);
} else } else
{ {
f_i = Y[i]; f_i = Y[i];
D[i+1] = (f_j - f_i) / (x_j - x_i); D[i+1] = (f_j - f_i) / (x_j - x_i);
printf ("f(x%d, ..., x%d, x%d) = %lf\n", i-k, i+1, i+1, D[i+1]);
} }
f_j = f_i; f_j = f_i;
@ -66,6 +71,14 @@ double t4_solve (
start_value = 1; start_value = 1;
value = 0; value = 0;
printf("------- Y -------\n");
for (int i = 0; i < n; ++i)
printf("Y[%d] = %lf\n", i, Y[i]);
printf("------- D -------\n");
for (int i = 0; i < n; ++i)
printf("D[%d] = %lf\n", i, D[i]);
for (int i = 0; i < n; ++i) for (int i = 0; i < n; ++i)
{ {
const double x_i = X[i]; const double x_i = X[i];