Return to asinh.3 CVS log

Up to [CSRG BSD Unix] / 43BSDReno / lib / libm / common_source

Annotation of 43BSDReno/lib/libm/common_source/asinh.3, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1985 Regents of the University of California.
                      2: .\" All rights reserved.  The Berkeley software License Agreement
                      3: .\" specifies the terms and conditions for redistribution.
                      4: .\"
                      5: .\"    @(#)asinh.3     6.2 (Berkeley) 5/12/86
                      6: .\"
                      7: .TH ASINH 3M  "May 12, 1986"
                      8: .UC 6
                      9: .ds up \fIulp\fR
                     10: .SH NAME
                     11: asinh, acosh, atanh \- inverse hyperbolic functions
                     12: .SH SYNOPSIS
                     13: .nf
                     14: .B #include <math.h>
                     15: .PP
                     16: .B double asinh(x)
                     17: .B double x;
                     18: .PP
                     19: .B double acosh(x)
                     20: .B double x;
                     21: .PP
                     22: .B double atanh(x)
                     23: .B double x;
                     24: .fi
                     25: .SH DESCRIPTION
                     26: These functions compute the designated inverse hyperbolic functions for real
                     27: arguments.
                     28: .SH ERROR (due to Roundoff etc.)
                     29: These functions inherit much of their error from log1p described in
                     30: exp(3M).  On a VAX, acosh is accurate to about 3 \*(ups,
                     31: asinh and atanh to about 2 \*(ups.
                     32: An \*(up is one \fIU\fRnit in the \fIL\fRast \fIP\fRlace carried.
                     33: .SH DIAGNOSTICS
                     34: Acosh returns the reserved operand on a VAX if the argument is less than 1.
                     35: .PP
                     36: Atanh returns the reserved operand on a VAX if the argument has absolute
                     37: value bigger than or equal to 1.
                     38: .SH SEE ALSO
                     39: math(3M), exp(3M), infnan(3M)
                     40: .SH AUTHOR
                     41: W. Kahan, Kwok\-Choi Ng

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.