asinh, asinhf, asinhl - inverse hyperbolic sine function


   #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)):

       _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


   These functions calculate the inverse hyperbolic sine of x; that is the
   value whose hyperbolic sine is x.


   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
   (negative infinity) is returned.


   No errors occur.


   For   an   explanation   of   the  terms  used  in  this  section,  see

   Interface                    Attribute      Value   
   asinh(), asinhf(), asinhl()  Thread safety  MT-Safe 


   C99, POSIX.1-2001, POSIX.1-2008.

   The variant returning double also conforms to SVr4, 4.3BSD, C89.


   acosh(3), atanh(3), casinh(3), cosh(3), sinh(3), tanh(3)


   This page is part of release 4.09 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

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