C/math.h/asinh
asinh: returns the arc hyperbolic sine of arg
//Declaration: float asinhf(float arg);
double asinh(double arg);
long double asinhl(long double arg);
#include <math.h>
#include <stdio.h>
int main(void)
{
printf("%f.\n", asinh(12));
return 0;
}
/*
3.179785.
*/