411 REFERENCE · Wikibooks
Linear Algebra and the C Language/a0aq
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__NOTOC__
Install and compile this file in your working directory.
/* ------------------------------------ */
/* Save as : c00d.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
void fun(int r)
{
double **u = i_mR(r,C1);
clrscrn();
printf(" u :");
p_mR(u,S3,P0,C6);
printf(" <u,u> >= 0 [Positivity axiom] \n\n");
printf(" <u,u> = 0 if and only if u = 0 \n\n");
printf(" <u,u> = u^t.u \n");
printf(" <u,u> = %.0f \n\n", dot_R(u,u));
f_mR(u);
}
/* ------------------------------------ */
int main(void)
{
time_t t;
srand(time(&t));
do
{
fun(rp_I(R3)+R2);
} while(stop_w());
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
Screen output example:
u :
+0
+0
+0
+0
+0
<u,u> >= 0 [Positivity axiom]
<u,u> = 0 if and only if u = 0
<u,u> = u^t.u
<u,u> = 0
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Press X return to stop