# tanh(3) [netbsd man page]

TANH(3) BSD Library Functions Manual TANH(3)NAME

tanh, tanhfhyperbolic tangent function--LIBRARY

Math Library (libm, -lm)SYNOPSIS

#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

Upon successful completion, these functions return the hyperbolic tangent value. The following may also occur: 1. If x is +- 0, x is returned. 2. If x is NaN, a NaN is returned. 3. If x is positive infinity, a value 1 is returned; if x is negative infinity,is returned. 4. If x is subnormal, a range error can occur and x is returned.-1SEE ALSO

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

The described functions conform to ISO/IEC 9899:1999 (``ISO C99'').BSD

September 18, 2011 BSD

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NAME

tanh, tanhfhyperbolic tangent function--LIBRARY

Math Library (libm, -lm)SYNOPSIS

#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

Upon successful completion, these functions return the hyperbolic tangent value. The following may also occur: 1. If x is +- 0, x is returned. 2. If x is NaN, a NaN is returned. 3. If x is positive infinity, a value 1 is returned; if x is negative infinity,is returned. 4. If x is subnormal, a range error can occur and x is returned.-1SEE ALSO

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

The described functions conform to ISO/IEC 9899:1999 (``ISO C99'').BSD

September 18, 2011 BSD