f___2.h

c源码

/*         .h                     freeware                   [e-mail]*/

/* -------------------------------------------------------------------------- */
double f(
double x)
{
 return(       cos(x));
}
char  feq[] = " cos(x)";
/* -------------------------------------------------------------------------- */
double Df(
double x)
{
 return(  (-sin(x)) );
}
char Dfeq[] = " (-sin(x)) ";
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */