usr/src/lib/libm/common_source/asinh.3

From Prof. Kahan at UC at Berkeley
.TH ASINH 3M "8 May 1985"
.UC 4
.SH NAME
asinh, acosh, atanh \- inverse hyperbolic functions
.SH SYNOPSIS
.nf
.B #include <math.h>
.PP
.B double asinh(x)
.B double x;
.PP
.B double acosh(x)
.B double x;
.PP
.B double atanh(x)
.B double x;
.fi
.SH DESCRIPTION
These functions compute the designated inverse hyperbolic functions for real
arguments.
.SH SEE ALSO
intro(3M)
.SH DIAGNOSTICS
.I Acosh
returns the reserved operand on the VAX if the argument is less than 1.
.PP
.I Atanh
returns the reserved operand on the VAX if the argument has absolute value
bigger than or equal to 1.
.SH AUTHOR
W. Kahan, Kwok-Choi Ng