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tanh (3)
TANH(3) Linux Programmer's Manual TANH(3)
NAME
tanh, tanhf, tanhl - hyperbolic tangent function
SYNOPSIS
#include <math.h>
double tanh(double x);
float tanhf(float x);
long double tanhl(long double x);
Link with -lm.
DESCRIPTION
The tanh() function returns the hyperbolic tangent of x, which is
defined mathematically as sinh(x) / cosh(x).
CONFORMING TO
SVr4, 4.3BSD, C89. The float and long double variants are C99 require-
ments.
SEE ALSO
acosh(3), asinh(3), atanh(3), cosh(3), ctanh(3), sinh(3)
2002-07-27 TANH(3)
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