C Tutorial/math.h/acosh
acosh
Item Value Header file math.h Declaration float acoshf(float arg);double acosh(double arg);long double acoshl(long double arg); Return returns the arc hyperbolic cosine of 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;
}