Mathc initiation/Fichiers h : c26bb

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	`kg_c.h` utilitaire
/* --------------------------------- */
/* save as  kg_c.h                   */
/* --------------------------------- */
void G_C_2d(
CTRL_splot w,

double (*P_f)(double x),
double (*P_g)(double x),

tvalue t
)
{
FILE   *fp = fopen("a_main.plt","w");

 fprintf(fp," reset\n"
            " set size ratio -1\n"
            " set zeroaxis lt 8\n"
            " set grid\n\n"
            " plot [%0.3f:%0.3f] [%0.3f:%0.3f]\\\n"
            " \"a_r\"      with linespoints lt 16 lw 3,\\\n"
            " \"a_curve\"  with line        lt  6 lw 3,\\\n"
            " \"a_circle\" with line        lt  7 lw 3\n",
              w.xmin,w.xmax,w.ymin,w.ymax);
 fclose(fp);


 fp = fopen("a_r","w");
 fprintf(fp," %6.5f   %6.5f\n",cx_2d((*P_f),(*P_g),t.value),
                               cy_2d((*P_f),(*P_g),t.value));
 fprintf(fp," %6.5f   %6.5f\n",(*P_f)(t.value),(*P_g)(t.value));
 fclose(fp); 


 fp = fopen("a_curve","w");
 for(t.value=t.min; t.value<=t.max; t.value+=t.step)
     fprintf(fp," %6.3f  %6.3f\n",(*P_f)(t.value),(*P_g)(t.value));
 fclose(fp);
}
/* --------------------------------- */
/* --------------------------------- */