atanh(3M)

NAME | SYNOPSIS | API RESTRICTIONS | DESCRIPTION | RETURN VALUES | ATTRIBUTES | SEE ALSO

NAME

atanh- inverse hyperbolic tangent function

SYNOPSIS

$(NUCLEUS_DIR)/lib/libm.a
#include <math.h>

double atanh(double x);

API RESTRICTIONS

The function or functions documented here may not be used safely in all application contexts with all APIs provided in the ChorusOS 5.0 product.

See API(5FEA) for details.

DESCRIPTION

The atanh() function computes the inverse hyperbolic tangent of the real argument x. For information about errors due to rounding off, see Intro(3M).

RETURN VALUES

The atanh() function returns the inverse hyperbolic tangent of x, if successful. If the argument has an absolute value greater than or equal to 1, atanh() sets errno to EDOM and a system-dependent notification is performed.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Evolving

SEE ALSO

acosh(3M), asinh(3M), exp(3M), infnan(3M), Intro(3M)

ChorusOS 5.0  Last Revised December 2001

NAME | SYNOPSIS | API RESTRICTIONS | DESCRIPTION | RETURN VALUES | ATTRIBUTES | SEE ALSO