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

NAME
     tanh, tanhf -- hyperbolic tangent functions

LIBRARY
     Math Library (libm, -lm)

SYNOPSIS
     #include <math.h>

     double
     tanh(double x);

     float
     tanhf(float x);

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

RETURN VALUES
     The tanh() and the tanhf() functions return the hyperbolic tangent value.

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

STANDARDS
     The tanh() function conforms to ISO/IEC 9899:1990 (``ISO C89'').

FreeBSD 4.9			  May 2, 1991			   FreeBSD 4.9