C/math.h/cosh

cosh: returns the hyperbolic cosine of arg

<source lang="cpp">

//Declaration: float coshf(float arg);

              double cosh(double arg); 
              long double coshl(long double arg);  
 #include <math.h>
 #include <stdio.h>
 int main(void)
 {
   double val = -1.0;
   do {
     printf("Hyperbolic cosine of %f is %f.\n", val, cosh(val));
     val += 0.1;
   } while(val<=1.0);
   return 0;
 }
        

/* Hyperbolic cosine of -1.000000 is 1.543081. Hyperbolic cosine of -0.900000 is 1.433086. Hyperbolic cosine of -0.800000 is 1.337435. Hyperbolic cosine of -0.700000 is 1.255169. Hyperbolic cosine of -0.600000 is 1.185465. Hyperbolic cosine of -0.500000 is 1.127626. Hyperbolic cosine of -0.400000 is 1.081072. Hyperbolic cosine of -0.300000 is 1.045339. Hyperbolic cosine of -0.200000 is 1.020067. Hyperbolic cosine of -0.100000 is 1.005004. Hyperbolic cosine of 0.000000 is 1.000000. Hyperbolic cosine of 0.100000 is 1.005004. Hyperbolic cosine of 0.200000 is 1.020067. Hyperbolic cosine of 0.300000 is 1.045339. Hyperbolic cosine of 0.400000 is 1.081072. Hyperbolic cosine of 0.500000 is 1.127626. Hyperbolic cosine of 0.600000 is 1.185465. Hyperbolic cosine of 0.700000 is 1.255169. Hyperbolic cosine of 0.800000 is 1.337435. Hyperbolic cosine of 0.900000 is 1.433086. Hyperbolic cosine of 1.000000 is 1.543081.

• /

      </source>