411 REFERENCE · Wikibooks
Linear Algebra and the C Language/a07f
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
__NOTOC__
Install and compile this file in your working directory.
thumb|
/* ------------------------------------ */
/* Save as : c00b.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
#define RA R8
#define CA C8
#define Cb C1
/* ------------------------------------ */
int main(void)
{
double ab[RA*(CA+Cb)]={
// I1 I2 I3 I4 I5 I6
+1, -1, -1, +0, +0, +0, 0, 0, 0,
+0, +0, +1, -1, -1, +0, 0, 0, 0,
+0, +1, +0, +0, +1, -1, 0, 0, 0,
-1, +0, +0, +1, +0, +1, 0, 0, 0,
+0, -50, +0, +0, +0, -20, 0, 0, -90,
+0, +50, -20, +0, -10, +0, 0, 0, 0,
+0, +0, +0, -50, +10, +20, 0, 0, 0,
+0, +0, -20, -50, +0, +0, 0, 0, -90,
};
double **Ab = ca_A_mR(ab,i_Abr_Ac_bc_mR(RA,CA,Cb));
double **A = c_Ab_A_mR(Ab,i_mR(RA,CA));
double **b = c_Ab_b_mR(Ab,i_mR(RA,Cb));
clrscrn();
printf(" Ab :\n"
" I1 I2 I3 I4 I5 I6 ");
p_mR(Ab,S6,P2,C9);
stop();
clrscrn();
printf(" Copy/Paste into the octave window.\n\n");
p_Octave_mR(Ab,"Ab",P0);
printf("\n rref(Ab,.00000000001)\n\n");
stop();
clrscrn();
printf(" gj_TP_mR(Ab) :\n\n"
" I1 I2 I3 I4 I5 I6 ");
p_mR(gj_TP_mR(Ab),S6,P2,C9);
stop();
f_mR(Ab);
f_mR(b);
f_mR(A);
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
thumb|
Screen output example:
Ab :
I1 I2 I3 I4 I5 I6
+1.00 -1.00 -1.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00
+0.00 +0.00 +1.00 -1.00 -1.00 +0.00 +0.00 +0.00 +0.00
+0.00 +1.00 +0.00 +0.00 +1.00 -1.00 +0.00 +0.00 +0.00
-1.00 +0.00 +0.00 +1.00 +0.00 +1.00 +0.00 +0.00 +0.00
+0.00 -50.00 +0.00 +0.00 +0.00 -20.00 +0.00 +0.00 -90.00
+0.00 +50.00 -20.00 +0.00 -10.00 +0.00 +0.00 +0.00 +0.00
+0.00 +0.00 +0.00 -50.00 +10.00 +20.00 +0.00 +0.00 +0.00
+0.00 +0.00 -20.00 -50.00 +0.00 +0.00 +0.00 +0.00 -90.00
Press return to continue.
Copy/Paste into the octave window.
Ab=[
+1,-1,-1,+0,+0,+0,+0,+0,+0;
+0,+0,+1,-1,-1,+0,+0,+0,+0;
+0,+1,+0,+0,+1,-1,+0,+0,+0;
-1,+0,+0,+1,+0,+1,+0,+0,+0;
+0,-50,+0,+0,+0,-20,+0,+0,-90;
+0,+50,-20,+0,-10,+0,+0,+0,+0;
+0,+0,+0,-50,+10,+20,+0,+0,+0;
+0,+0,-20,-50,+0,+0,+0,+0,-90]
rref(Ab,.00000000001)
Press return to continue.
gj_TP_mR(Ab) :
I1 I2 I3 I4 I5 I6
+1.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00 +3.00
+0.00 +1.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00 +1.00
+0.00 +0.00 +1.00 +0.00 +0.00 +0.00 +0.00 +0.00 +2.00
+0.00 +0.00 +0.00 +1.00 +0.00 +0.00 +0.00 +0.00 +1.00
+0.00 +0.00 +0.00 +0.00 +1.00 +0.00 +0.00 +0.00 +1.00
+0.00 +0.00 +0.00 +0.00 +0.00 +1.00 +0.00 +0.00 +2.00
+0.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00
+0.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00 +0.00
Press return to continue.