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#include <math.h>
double
tanh(double x)
float
tanhf(float x)
DESCRIPTION
The tanh() and tanhf() functions compute the hyperbolic tangent of x. For
a discussion of error due to roundoff, see math(3).
RETURN VALUES
The tanh() function returns the hyperbolic tangent value.
SEE ALSO
acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), sin(3),
sinh(3), tan(3), math(3)
STANDARDS
The tanh() function conforms to ANSI C3.159-1989 (``ANSI C'').
BSD Experimental May 2, 1991 1
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