Open Source Software

sinh(3)



NAME

   sinh, sinhf, sinhl - hyperbolic sine function

SYNOPSIS

   #include <math.h>

   double sinh(double x);
   float sinhf(float x);
   long double sinhl(long double x);

   Link with -lm.

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

   sinhf(), sinhl():
       _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
           || /* Since glibc 2.19: */ _DEFAULT_SOURCE
           || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE

DESCRIPTION

   These  functions  return  the  hyperbolic  sine  of x, which is defined
   mathematically as:

       sinh(x) = (exp(x) - exp(-x)) / 2

RETURN VALUE

   On success, these functions return the 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.

   If the result overflows, a range error occurs, and the functions return
   HUGE_VAL, HUGE_VALF, or HUGE_VALL, respectively, with the same sign  as
   x.

ERRORS

   See  math_error(7) for information on how to determine whether an error
   has occurred when calling these functions.

   The following errors can occur:

   Range error: result overflow
          errno is set to ERANGE.  An  overflow  floating-point  exception
          (FE_OVERFLOW) is raised.

ATTRIBUTES

   For   an   explanation   of   the  terms  used  in  this  section,  see
   attributes(7).

   
   Interface                 Attribute      Value   
   
   sinh(), sinhf(), sinhl()  Thread safety  MT-Safe

CONFORMING TO

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

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

SEE ALSO

   acosh(3), asinh(3), atanh(3), cosh(3), csinh(3), tanh(3)

COLOPHON

   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
   https://www.kernel.org/doc/man-pages/.

                              2016-03-15                           SINH(3)



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