Cosh () [C language library function source code]

[C language library function source code]

[This program is compiled in Dev C ++ 4.9.9.2]

Double my_cosh (Double X)

{

Double ret;

Ret = exp (FABS (x ));

Return (Ret + 1.0/RET)/2.0;

} // Calculate the hyperbolic cosine of X.

Int main ()

{

Double A = 0.5;

Printf ("cosh (% F) = % F/N", A, cosh ());

Printf ("my_cosh (% F) = % F/N", A, my_cosh ());

A =-0.5;

Printf ("cosh (% F) = % F/N", A, cosh ());

Printf ("my_cosh (% F) = % F/N", A, my_cosh ());

System ("pause ");

Return 0;

}