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cosh(3) [opendarwin man page]

COSH(3) 						   BSD Library Functions Manual 						   COSH(3)

cosh -- hyperbolic cosine function SYNOPSIS
#include <math.h> double cosh(double x); DESCRIPTION
The coshf() function computes the hyperbolic cosine of x. SPECIAL VALUES
cosh(+-0) returns 1. cosh(+-infinity) returns +infinity. SEE ALSO
acos(3), asin(3), atan(3), atan2(3), cos(3), sin(3), sinh(3), tan(3), tanh(3), math(3), matherr(3) STANDARDS
The cosh() function conforms to ISO/IEC 9899:1999(E). BSD
November 20, 2002 BSD

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

tanh, tanhf -- hyperbolic 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, -1 is returned. 4. If x is subnormal, a range error can occur and x is returned. SEE 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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