Mathc matrices/e1606
Apparence
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gj06.c |
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/* ------------------------------------ */
/* Save as : gj06.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
/* ------------------------------------ */
void xx_gj3_T_mR(
double **Ab,
int below
)
{
int r= R1;
int c= C1;
while( (r<Ab[R_SIZE][C0]) &&
(c<Ab[C_SIZE_A][C0]) )
{
if(pivotbest_gj3Ab_mR(Ab,r,c)>ERROR_E)
zero_under_pivot_gj3Ab_mR(Ab,r,c);
else r--;
r++;
c++;
}
r = Ab[R_SIZE][C0];
if(below)
while(r>R1)
{
r--;
c=C1;
while(fabs(Ab[r][c])<ERROR_E && c<(Ab[C_SIZE_A][C0]-C1) ) c++;
if(fabs(Ab[r][c])>ERROR_E)
zero_below_pivot_gj3Ab_mR(Ab,r,c);
}
}
/* ------------------------------------ */
double **XX_gj_PP_mR(
double **Ab,
int below
)
{
xx_gj3_T_mR(Ab,below);
return(Ab);
}
/* ------------------------------------ */
/* ------------------------------------ */
void fun(int r)
{
double **A = i_mR(r,r);
double **b = i_mR(r,C1);
double **Ab = i_Abr_Ac_bc_mR(r,r,C1);
/* i_Abr_Ac_bc_mR(R_Ab,C_A,C_b)); */
do
{
r_mR(A,999.);
printf(".");
}while(!det_R(A));
r_mR(b,999.);
c_A_b_Ab_mR(A,b,Ab);
clrscrn();
printf(" Copy/Past into the octave window.\n\n");
p_Octave_mR(Ab,"Ab",P0);
printf("\n rref(Ab,.00000000001)\n\n");
stop();
clrscrn();
XX_gj_PP_mR(Ab,YES);
printf(" gj_PP_mR(Ab,YES) :");
p_mR(Ab,S10,P4,C7);
f_mR(Ab);
f_mR(b);
f_mR(A);
}
/* ------------------------------------ */
int main(void)
{
time_t t;
srand(time(&t));
do
{
fun(R5);
} while(stop_w());
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
Nous avons introduit la fonction gj3_T_mR(); que nous allons étudier. Comme cette fonction est dans la bibliothèque, nous allons l'appeler xx_gj3_T_mR();
Exemple de sortie écran :
------------------------------------
Copy/Past into the octave window.
Ab=[
+174,-351,+924,+582;
+510,+864,-989,+186;
-889,+632,+844,+488]
rref(Ab,.00000000001)
Press return to continue.
gj_PP_mR(Ab,YES) :
+1.00000 +0.00000 +0.00000 +0.67398
+0.00000 +1.00000 +0.00000 +0.69564
+0.00000 +0.00000 +1.00000 +0.76721
Press return to continue
Press X to stop