Mathc matrices/c24u

Application

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	c04b.c

/* ------------------------------------ */
/*  Save as :  c04b.c                   */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
/* ------------------------------------ */
#define   RA R4
#define   CA C4

#define   RX R4
#define   CX C1
/* ------------------------------------ */
/* ------------------------------------ */
int main(void)
{
double a[RA*CA]={
    +3, -4, -2, -1,
    +5, -3, -0, -2,      
    +6, -0, -3, -2,
    +3, -3, -1, -3   
};

double x[RX*CX]={
  +47.00, 
  +34.00, 
  +48.00, 
  +37.00 
};

double **A  = ca_A_mR(a, i_mR(RA,CA));
double **X  = ca_A_mR(x, i_mR(RX,CX));
double **AX =            i_mR(RA,CX) ;

  clrscrn();
  printf(" In the Standard basis\n\n"
         " Find T(x) = A*x \n\n"
         " A :  ");
  p_mR(A,S6,P2,C7);
  printf(" x : ");
  p_mR(X,S6,P2,C7);
  printf(" A*x");
  p_mR(mul_mR(A,X,AX),S7,P2,C7);
  stop();


  f_mR(A);
  f_mR(X);
  f_mR(AX);
  
  return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */

 Calculons T([x]) = A*[x]
 

Exemple de sortie écran :

 ------------------------------------ 
 In the Standard basis

 Find T(x) = A*x 

 A :  
 +3.00  -4.00  -2.00  -1.00 
 +5.00  -3.00  +0.00  -2.00 
 +6.00  +0.00  -3.00  -2.00 
 +3.00  -3.00  -1.00  -3.00 

 x : 
+47.00 
+34.00 
+48.00 
+37.00 

 A*x
-128.00 
 +59.00 
 +64.00 
-120.00 

 Press return to continue.