DragonFly On-Line Manual Pages


TANH(3) 	      DragonFly 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), ctanh(3), math(3), sin(3), sinh(3), tan(3)

STANDARDS

The tanh() function conforms to ISO/IEC 9899:1990 (``ISO C90''). DragonFly 4.1 September 18, 2011 DragonFly 4.1