TANH(3)                FreeBSD Library Functions Manual                TANH(3)

NAME
     tanh, tanhf, tanhl - hyperbolic tangent functions

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").

FreeBSD 13.1-RELEASE-p6         August 17, 2013        FreeBSD 13.1-RELEASE-p6