geoffrey/s4-c
geoffrey/s4-c
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This commit is contained in:
Geoffrey Frogeye 2016-03-09 08:28:07 +01:00
parent 659896de63
commit 5023793832
2 changed files with 5 additions and 3 deletions
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6
DS1-2015/E4.c
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@ -6,13 +6,13 @@
// 1) // 1)
float D3diag(int n, double* a, double* b, double* c) { double D3diag(int n, double* a, double* b, double* c) {
float D[n]; double D[n];
int i; int i;
D[0] = b[0]; D[0] = b[0];
D[1] = b[0] * b[1] - a[1] * c[0]; D[1] = b[0] * b[1] - a[1] * c[0];
for (i = 2; i < n; i++) { for (i = 2; i < n; i++) {
D[i] = b[i] * D[i-1] - a[i] * c[i-2] * D[i-2]; D[i] = b[i] * D[i-1] - a[i] * c[i-1] * D[i-2];
} }
return D[i]; return D[i];
} }

2
TP2/E4.c
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@ -25,8 +25,10 @@ int main() {
int X[N] = {2,8,-3,5,9,-4,-2,0,1,16}; int X[N] = {2,8,-3,5,9,-4,-2,0,1,16};
int DX[N][N]; int DX[N][N];
int i; int i;
printf("-- X ");
afficherTableau(X, N); afficherTableau(X, N);
soustraire(X, DX[0], N); soustraire(X, DX[0], N);
printf("-- D1X");
afficherTableau(DX[0], N-1); afficherTableau(DX[0], N-1);
for (i = 0; i < N-1; i++) { for (i = 0; i < N-1; i++) {
soustraire(DX[i], DX[i+1], N-i); soustraire(DX[i], DX[i+1], N-i);