huschi.net

ASINH(3)                   Linux Programmer's Manual                  ASINH(3)
NAME
       asinh, asinhf, asinhl - inverse hyperbolic sine function
SYNOPSIS
       #include <math.h>
       double asinh(double x);
       float asinhf(float x);
       long double asinhl(long double x);
       Link with -lm.
   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
       asinh():
           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
               || _XOPEN_SOURCE >= 500
               || /* Since glibc 2.19: */ _DEFAULT_SOURCE
               || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
       asinhf(), asinhl():
           _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
               || /* Since glibc 2.19: */ _DEFAULT_SOURCE
               || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
DESCRIPTION
       These functions calculate the inverse hyperbolic sine of x; that is the
       value whose hyperbolic sine is x.
RETURN VALUE
       On success, these functions return the inverse hyperbolic sine of x.
       If x is a NaN, a NaN is returned.
       If x is +0 (-0), +0 (-0) is returned.
       If x is positive infinity (negative infinity), positive infinity (nega-
       tive infinity) is returned.
ERRORS
       No errors occur.
ATTRIBUTES
       For   an   explanation   of   the  terms  used  in  this  section,  see
       attributes(7).
       +----------------------------+---------------+---------+
       |Interface                   | Attribute     | Value   |
       +----------------------------+---------------+---------+
       |asinh(), asinhf(), asinhl() | Thread safety | MT-Safe |
       +----------------------------+---------------+---------+
CONFORMING TO
       C99, POSIX.1-2001, POSIX.1-2008.
       The variant returning double also conforms to SVr4, 4.3BSD.
SEE ALSO
       acosh(3), atanh(3), casinh(3), cosh(3), sinh(3), tanh(3)
COLOPHON
       This page is part of release 4.15 of the Linux  man-pages  project.   A
       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at
       https://www.kernel.org/doc/man-pages/.
GNU                               2017-09-15                          ASINH(3)