Mathc initiation/c35bf

Sommaire

Installer ce fichier dans votre répertoire de travail.

	kgn_c.h

/* --------------------------------- */
/* save as kgn_c.h                   */
/* --------------------------------- */
void G_Normal_xy(
CTRL_splot w,

double (*P_f)  (double t),
double (*P_g)  (double t),
double (*PDgDf)(double t),

tvalue t
)
{
double a =-1./  (*PDgDf)(t.value);
double b =-1./(-(*PDgDf)(t.value))*(*P_f)(t.value)+(*P_g)(t.value);

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

 fprintf(fp," reset\n"
            " set size ratio -1\n"
            " set zeroaxis lt 8\n" 
            " plot [%0.3f:%0.3f] [%0.3f:%0.3f]\\\n"
            " \"a_curve\" with line lt  6 lw 3,\\\n"
            " %0.6f*x %+0.6f      lt 7 lw 3,\\\n"
            " \"a_P\" lt  6 lw 8,\\\n" 
            " \"axP\" lt  8 lw 5,\\\n" 
            " \"ayP\" lt  8 lw 5\n",
            w.xmin,w.xmax,w.ymin,w.ymax, 
            a,b);
 fclose(fp);
             
             
 fp = fopen("a_P","w");
 fprintf(fp," %0.6f   %0.6f",(*P_f)(t.value),(*P_g)(t.value));
 fclose(fp);
             
             
 fp = fopen("axP","w");
 fprintf(fp," %0.6f  0.",
            (*P_g)(t.value)*(*PDgDf)(t.value)+(*P_f)(t.value));
 fclose(fp);
              
                          
 fp = fopen("ayP","w");
 fprintf(fp," 0.   %0.6f",
            (*P_f)(t.value)/((*PDgDf)(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," %6.6f   %6.6f\n",(*P_f)(t.value),(*P_g)(t.value));
 fclose(fp);             
}
/* --------------------------------- */
/* --------------------------------- */

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