diff options
Diffstat (limited to 'lib/libm/man/atanh.3')
| -rw-r--r-- | lib/libm/man/atanh.3 | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/lib/libm/man/atanh.3 b/lib/libm/man/atanh.3 index 535252e45eb..822e2912b79 100644 --- a/lib/libm/man/atanh.3 +++ b/lib/libm/man/atanh.3 @@ -30,11 +30,11 @@ .\" SUCH DAMAGE. .\" .\" from: @(#)atanh.3 5.2 (Berkeley) 5/6/91 -.\" $Id: atanh.3,v 1.2 1995/10/28 00:56:49 deraadt Exp $ +.\" $Id: atanh.3,v 1.3 1997/04/05 04:18:47 tholo Exp $ .\" .Dd May 6, 1991 .Dt ATANH 3 -.Os BSD 4.3 +.Os .Sh NAME .Nm atanh .Nd inverse hyperbolic tangent function @@ -54,15 +54,19 @@ of the real argument .Ar x . .Sh RETURN VALUES -Exceptional conditions are handled by -.Xr matherr 3 . +If |x|>=1, +.Fn atanh "x" +and +.Fn atanhf "x" +returns +inf, -inf or NaN, and sets the global variable +.Va errno +to EDOM. .Sh SEE ALSO .Xr acosh 3 , .Xr asinh 3 , .Xr exp 3 , .Xr infnan 3 , -.Xr math 3 , -.Xr matherr 3 +.Xr math 3 .Sh HISTORY The .Fn atanh |