bsd man page for asinh

Query: asinh

OS: bsd

Section: 3m

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ASINH(3M)																 ASINH(3M)


NAME

       asinh, acosh, atanh - inverse hyperbolic functions


SYNOPSIS

       #include <math.h>

       double asinh(x)
       double x;

       double acosh(x)
       double x;

       double atanh(x)
       double x;


DESCRIPTION

       These functions compute the designated inverse hyperbolic functions for real arguments.

ERROR (due to Roundoff etc.)
       These  functions inherit much of their error from log1p described in exp(3M).  On a VAX, acosh is accurate to about 3 ulps, asinh and atanh
       to about 2 ulps.  An ulp is one Unit in the Last Place carried.


DIAGNOSTICS

       Acosh returns the reserved operand on a VAX if the argument is less than 1.

       Atanh returns the reserved operand on a VAX if the argument has absolute value bigger than or equal to 1.


SEE ALSO

       math(3M), exp(3M), infnan(3M)


AUTHOR

       W. Kahan, Kwok-Choi Ng

4.3 Berkeley Distribution					   May 12, 1986 							 ASINH(3M)