Mathc matrices/01y
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c00a.c |
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/* ------------------------------------ */
/* Save as : c00a.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(int r)
{
double **A = rlower_mR(i_mR(r,r),9.);
double **Q = i_mR(r,r);
double **R = i_mR(r,r);
clrscrn();
printf(" A :");
P_mR(A,S3,P0,C4);
printf(" Copy/Past into the octave windows \n\n");
p_Octave_mR(A,"a",P0);
printf(" [Q, R] = qr (a,0) \n\n");
stop();
clrscrn();
QR_mR(A,Q,R);
printf(" Q :");
p_mR(Q,S8,P3,C4);
printf(" R :");
p_mR(R,S8,P3,C4);
stop();
clrscrn();
printf(" A :");
p_mR(A,S3,P0,C4);
printf(" A = Q * R :");
mul_mR(Q,R, A);
p_mR(A,S8,P3,C4);
f_mR(A);
f_mR(Q);
f_mR(R);
}
/* ------------------------------------ */
int main(void)
{
time_t t;
srand(time(&t));
do
{
fun(rp_I(R3)+R1);
} while(stop_w());
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
Exemple de sortie écran :
A :
-8, +0, +0, +0,
-3, -7, +0, +0,
-5, -8, +4, +0,
+2, +8, +7, -5
Copy/Past into the octave windows
a=[
-8,+0,+0,+0;
-3,-7,+0,+0;
-5,-8,+4,+0;
+2,+8,+7,-5]
[Q, R] = qr (a,0)
Press return to continue.
Q :
-0.792 +0.554 -0.253 -0.044
-0.297 -0.434 +0.126 -0.841
-0.495 -0.388 +0.621 +0.468
+0.198 +0.595 +0.731 -0.268
R :
+10.100 +7.624 -0.594 -0.990
+0.000 +10.903 +2.617 -2.976
-0.000 -0.000 +7.603 -3.657
+0.000 -0.000 +0.000 +1.338
Press return to continue.
A :
-8 +0 +0 +0
-3 -7 +0 +0
-5 -8 +4 +0
+2 +8 +7 -5
A = Q * R :
-8.000 -0.000 -0.000 +0.000
-3.000 -7.000 -0.000 +0.000
-5.000 -8.000 +4.000 -0.000
+2.000 +8.000 +7.000 -5.000
Press return to continue
Press X return to stop