411 REFERENCE · Wikibooks
Linear Algebra and the C Language/a03j
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 : c00d.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(int rc)
{
double **A = r_mR( i_mR(rc,rc),9);
double **A_t = transpose_mR(A,i_mR(rc,rc) );
clrscrn();
printf(" A:");
p_mR(A, S3,P0,C6);
printf(" A_t:");
p_mR(A_t, S3,P0,C6);
printf("\n"
" Trace(A ) = %+.0f\n"
" Trace(A_t) = %+.0f\n", trace_R(A), trace_R(A_t));
f_mR(A);
f_mR(A_t);
}
/* ------------------------------------ */
int main(void)
{
time_t t;
srand(time(&t));
do
fun(rp_I(RC5));
while(stop_w());
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
trace(A) = trace(A_t):
Screen output example:
A:
+2 +1 +3
-1 +4 -3
-9 +2 +8
A_t:
+2 -1 -9
+1 +4 +2
+3 -3 +8
Trace(A ) = +14
Trace(A_t) = +14
Press return to continue
Press X return to stop