Linear Algebra and the C Language/a00l

Install this file in your working directory.

/* ------------------------------------ */
/*  Save as :   vi_size.h               */
/* ------------------------------------ */

/* ------------------------------------ */
/* - i_mR() add the row R0 then -R1---- */
/* ------------------------------------ */
int rsize_R(
double **A
)
{
  return( (A[R_SIZE][C0]-R1) );
}
/* ------------------------------------ */
/* - i_mR() add the column C0 then -C1  */
/* ------------------------------------ */
int csize_R(
double **A
)
{
  return( (A[C_SIZE][C0]-C1) );
}
/* ------------------------------------ */
/*  Ab = i_Abr_Ac_bc_mR(RAb, CA, Cb);   */
/* ------------------------------------ */
int csize_A_R(
double **Ab
)
{
  return( (Ab[C_SIZE_A][C0])-C1);
}
/* ------------------------------------ */
/*  Ab = i_Abr_Ac_bc_mR(RAb, CA, Cb);   */
/* ------------------------------------ */
int csize_b_R(
double **Ab
)
{
  return( (Ab[C_SIZE][C0])-(Ab[C_SIZE_A][C0]));
}
/* ------------------------------------ */
/* ------------------------------------ */

rsize_R(); will give us the number of rows of a matrix.

csize_R(); will give us the number of columns of a matrix

csize_A_R(); returns the number of columns of A for the system of equations Ab.

csize_b_R(); returns the number of columns of b for the system of equations Ab.

For these functions, I use R instead of mR because the function returns a real number instead of a matrix.