C/math.h/acosh

acosh: returns the arc hyperbolic cosine of arg

<source lang="cpp">

//Declaration: float acoshf(float arg);

               double acosh(double arg); 
               long double acoshl(long double arg);  
               

//Parameter: The argument must be zero or greater;

               otherwise a domain error will occur. 

 #include <math.h>
 #include <stdio.h>
 int main(void)
 {
   double val = -1.0;
   do {
     printf(" %f.\n", val, acosh(val));
     val += 1;
   } while(val<=10.0);
   return 0;
 }
        

/*

-1.000000.
0.000000.
1.000000.
2.000000.
3.000000.
4.000000.
5.000000.
6.000000.
7.000000.
8.000000.
9.000000.
10.000000.

• /

      </source>