1*61283Sbostic.\" Copyright (c) 1985, 1991, 1993 2*61283Sbostic.\" The Regents of the University of California. All rights reserved. 324695Smckusick.\" 449229Scael.\" %sccs.include.redist.roff% 524695Smckusick.\" 6*61283Sbostic.\" @(#)asinh.3 8.1 (Berkeley) 06/04/93 748352Scael.\" 848352Scael.Dd 948352Scael.Dt ASINH 3 1048352Scael.Os BSD 4.3 1148352Scael.Sh NAME 1248352Scael.Nm asinh 1348352Scael.Nd inverse hyperbolic sine function 1448352Scael.Sh SYNOPSIS 1548352Scael.Fd #include <math.h> 1648352Scael.Ft double 1748352Scael.Fn asinh "double x" 1848352Scael.Sh DESCRIPTION 1948352ScaelThe 2048352Scael.Fn asinh 2148352Scaelfunction computes the inverse hyperbolic sine 2248352Scaelof the real 2348352Scaelargument 2448352Scael.Ar x . 2548352ScaelFor a discussion of error due to roundoff, see 2648352Scael.Xr math 3 . 2748352Scael.Sh RETURN VALUES 2848352ScaelThe 2948352Scael.Fn asinh 3048352Scaelfunction 3148352Scaelreturns the inverse hyperbolic sine of 3248352Scael.Ar x . 3348352Scael.Sh SEE ALSO 3448352Scael.Xr acosh 3 , 3548352Scael.Xr atanh 3 , 3648352Scael.Xr exp 3 , 3748352Scael.Xr infnan 3 3848352Scael.Xr math 3 , 3948352Scael.Sh HISTORY 4048352ScaelThe 4148352Scael.Fn asinh 4248352Scaelfunction appeared in 4348352Scael.Bx 4.3 . 44