C Tutorial/math.h/tanh
tanh
Item Value Header file math.h Declaration float tanhf(float arg);double tanh(double arg);long double tanhl(long double arg); Return returns the hyperbolic tangent of arg.
#include <math.h>
#include <stdio.h>
int main(void)
{
double val = -1.0;
do {
printf("Hyperbolic tangent of %f is %f.\n", val, tanh(val));
val += 0.1;
} while(val<=1.0);
return 0;
}