411 REFERENCE · Wikibooks
Linear Algebra and the C Language/a0g5
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.
/* ------------------------------------ */
/* Save as : c00a.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
int main(void)
{
double a[R3*C3]={ 1,2,3,
1,2,3,
1,2,3 };
double id[R3*C3]={ 0,1,0,
1,0,0,
0,0,1 };
double **A = ca_A_mR(a, i_mR(R3,C3));
double **ID = ca_A_mR(id, i_mR(R3,C3));
double **AID = mul_mR(A,ID, i_mR(R3,C3));
clrscrn();
printf("Swap two columns:\n\n");
printf(" ID:");
p_mR(ID, S3,P0,C6);
printf(" A:");
p_mR(A, S3,P0,C6);
printf(" A ID:");
p_mR(AID, S3,P0,C6);
stop();
f_mR(A);
f_mR(ID);
f_mR(AID);
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
Swap two columns:
Screen output example:
Swap two columns:
ID:
+0 +1 +0
+1 +0 +0
+0 +0 +1
A:
+1 +2 +3
+1 +2 +3
+1 +2 +3
A ID:
+2 +1 +3
+2 +1 +3
+2 +1 +3
Press return to continue.