Linear Algebra and the C Language/a09p
Install and compile this file in your working directory.
/* ------------------------------------ */
/* Save as : c00d.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
/* ------------------------------------ */
#define RAb R3
#define CA C3
#define Cb C1
/* ------------------------------------ */
# define FREEV C2
/* ------------------------------------ */
/* ------------------------------------ */
int main(void)
{
double ab[RAb*(CA+C1)]={
+692.0, +524.0, +86.0, -1156.0,
+346.0, +262.0, +43.0, -578.0,
-1038.0, -786.0, -129.0, +1734.0
};
double **Ab = ca_A_mR(ab,i_Abr_Ac_bc_mR(RAb, CA, Cb));
double **Ab_free = i_Abr_Ac_bc_mR(CA, CA, Cb + FREEV);
double **b_free = i_mR(CA, Cb + FREEV);
clrscrn();
printf(" Ab :");
p_mR(Ab, S10,P4,C10);
printf("\n Ab : gj_PP_mR(Ab,NO) :");
gj_PP_mR(Ab,NO);
p_mR(Ab, S10,P4,C10);
stop();
clrscrn();
printf(" Ab :");
p_mR(Ab, S10,P4,C10);
put_zeroR_mR(Ab,Ab_free);
printf(" Ab_free : put_zeroR_mR(Ab,Ab_free);");
p_mR(Ab_free, S10,P4,C10);
put_freeV_mR(Ab_free);
printf(" Ab_free : put_freeV_mR(Ab_free);");
p_mR(Ab_free, S10,P4,C10);
printf(" Ab_free : gj_PP_mR(Ab_free,YES);");
gj_PP_mR(Ab_free,YES);
p_mR(Ab_free, S10,P4,C10);
stop();
clrscrn();
c_Ab_b_mR(Ab_free,b_free);
printf(" b_free :");
p_mR(b_free, S10,P4,C7);
printf(" b FREEV");
p_freeV(b_free, S8,P4);
stop();
f_mR(Ab);
f_mR(Ab_free);
f_mR(b_free);
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
Screen output example:
Ab :
+692.0000 +524.0000 +86.0000 -1156.0000
+346.0000 +262.0000 +43.0000 -578.0000
-1038.0000 -786.0000 -129.0000 +1734.0000
Ab : gj_PP_mR(Ab,NO) :
+1.0000 +0.7572 +0.1243 -1.6705
+0.0000 +0.0000 +0.0000 +0.0000
+0.0000 +0.0000 +0.0000 +0.0000
Press return to continue.
Ab :
+1.0000 +0.7572 +0.1243 -1.6705
+0.0000 +0.0000 +0.0000 +0.0000
+0.0000 +0.0000 +0.0000 +0.0000
Ab_free : put_zeroR_mR(Ab,Ab_free);
+1.0000 +0.7572 +0.1243 -1.6705 +0.0000 +0.0000
+0.0000 +0.0000 +0.0000 +0.0000 +0.0000 +0.0000
+0.0000 +0.0000 +0.0000 +0.0000 +0.0000 +0.0000
Ab_free : put_freeV_mR(Ab_free);
+1.0000 +0.7572 +0.1243 -1.6705 +0.0000 +0.0000
+0.0000 +1.0000 +0.0000 +0.0000 +1.0000 +0.0000
+0.0000 +0.0000 +1.0000 +0.0000 +0.0000 +1.0000
Ab_free : gj_PP_mR(Ab_free,YES);
+1.0000 +0.0000 +0.0000 -1.6705 -0.7572 -0.1243
+0.0000 +1.0000 +0.0000 +0.0000 +1.0000 +0.0000
+0.0000 +0.0000 +1.0000 +0.0000 +0.0000 +1.0000
Press return to continue.
b_free :
-1.6705 -0.7572 -0.1243
+0.0000 +1.0000 +0.0000
+0.0000 +0.0000 +1.0000
b FREEV
x1 = -1.6705 -0.7572*v -0.1243*w
x2 = +0.0000 +1.0000*v +0.0000*w
x3 = +0.0000 +0.0000*v +1.0000*w
Press return to continue.