| atanh.3 (165906) | atanh.3 (251599) |
|---|---|
| 1.\" Copyright (c) 1985, 1991 Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 12 unchanged lines hidden (view full) --- 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" from: @(#)atanh.3 5.2 (Berkeley) 5/6/91 | 1.\" Copyright (c) 1985, 1991 Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 12 unchanged lines hidden (view full) --- 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" from: @(#)atanh.3 5.2 (Berkeley) 5/6/91 |
| 29.\" $FreeBSD: head/lib/msun/man/atanh.3 165906 2007-01-09 01:02:06Z imp $ | 29.\" $FreeBSD: head/lib/msun/man/atanh.3 251599 2013-06-10 06:04:58Z das $ |
| 30.\" | 30.\" |
| 31.Dd January 14, 2005 | 31.Dd June 9, 2013 |
| 32.Dt ATANH 3 33.Os 34.Sh NAME 35.Nm atanh , | 32.Dt ATANH 3 33.Os 34.Sh NAME 35.Nm atanh , |
| 36.Nm atanhf | 36.Nm atanhf , 37.Nm atanhl |
| 37.Nd inverse hyperbolic tangent functions 38.Sh LIBRARY 39.Lb libm 40.Sh SYNOPSIS 41.In math.h 42.Ft double 43.Fn atanh "double x" 44.Ft float 45.Fn atanhf "float x" | 38.Nd inverse hyperbolic tangent functions 39.Sh LIBRARY 40.Lb libm 41.Sh SYNOPSIS 42.In math.h 43.Ft double 44.Fn atanh "double x" 45.Ft float 46.Fn atanhf "float x" |
| 47.Ft long double 48.Fn atanhl "long double x" |
|
| 46.Sh DESCRIPTION 47The | 49.Sh DESCRIPTION 50The |
| 48.Fn atanh 49and the 50.Fn atanhf | 51.Fn atanh , 52.Fn atanhf , 53and 54.Fn atanhl |
| 51functions compute the inverse hyperbolic tangent 52of the real 53argument 54.Ar x . 55For a discussion of error due to roundoff, see 56.Xr math 3 . 57.Sh RETURN VALUES | 55functions compute the inverse hyperbolic tangent 56of the real 57argument 58.Ar x . 59For a discussion of error due to roundoff, see 60.Xr math 3 . 61.Sh RETURN VALUES |
| 58The 59.Fn atanh 60and the 61.Fn atanhf 62functions | 62These functions |
| 63return the inverse hyperbolic tangent of 64.Ar x 65if successful. 66If the argument has absolute value 1, a divide-by-zero exception 67is raised and an infinity is returned. 68If 69.Ar |x| 70> 1, an invalid exception is raised and an \*(Na is returned. 71.Sh SEE ALSO 72.Xr acosh 3 , 73.Xr asinh 3 , 74.Xr exp 3 , 75.Xr fenv 3 , 76.Xr math 3 77.Sh HISTORY 78The | 63return the inverse hyperbolic tangent of 64.Ar x 65if successful. 66If the argument has absolute value 1, a divide-by-zero exception 67is raised and an infinity is returned. 68If 69.Ar |x| 70> 1, an invalid exception is raised and an \*(Na is returned. 71.Sh SEE ALSO 72.Xr acosh 3 , 73.Xr asinh 3 , 74.Xr exp 3 , 75.Xr fenv 3 , 76.Xr math 3 77.Sh HISTORY 78The |
| 79.Fn atanh 80function appeared in 81.Bx 4.3 . | 79.Fn atanh , 80.Fn atanhf , 81and 82.Fn atanhl 83functions appeared in 84.Bx 4.3 , 85.Fx 2.0 , 86and 87.Fx 10.0 , 88respectively. |