tanh, tanhl
Remonter à Math.h - Index
Header File
math.h
Category
Math Routines
Prototype
double tanh(double x);
long double tanhl(long double x);
Description
Calculates the hyperbolic tangent.
tanh computes the hyperbolic tangent, sinh(x)/cosh(x).
tanhl is the long double version; it takes a long double argument and returns a long double result. Error handling for these functions can be modified through the functions _matherr and _matherrl.
Return Value
tanh and tanhl return the hyperbolic tangent of x.
Example
#include <stdio.h>
#include <math.h>
int main(void)
{
double result, x;
x = 0.5;
result = tanh(x);
printf("The hyperbolic tangent of %lf is %lf\n", x, result);
return 0;
}
Portability
POSIX | Win32 | ANSI C | ANSI C++ | |
---|---|---|---|---|
tanh |
+ |
+ |
+ |
+ |
tanhl |
+ |
+ |
+ |