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Manual Pages  — TANH

NAME

tanh, tanhf, tanhl – hyperbolic tangent functions

CONTENTS

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <math.h>

double
tanh(double x);

float
tanhf(float x);

long double
tanhl(long double x);

DESCRIPTION

The tanh(), tanhf(), and tanhl() functions compute the hyperbolic tangent of x. For a discussion of error due to roundoff, see math(3).

RETURN VALUES

The tanh(), tanhf(), and the tanhl() functions return the hyperbolic tangent value.

SEE ALSO

acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), ctanh(3), math(3), sin(3), sinh(3), tan(3)

STANDARDS

The tanh() function conforms to ISO/IEC 9899:1990 ("ISO C90").
TANH (3) August 17, 2013
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