cosh(3) [osf1 man page]

sinh(3) 						     Library Functions Manual							   sinh(3)

NAME

       sinh, cosh, tanh - Hyperbolic functions

LIBRARY

       Math Library (libm.a)

SYNOPSIS

       #include <math.h>

       double  sinh   (double  x);  float  sinhf (float  x); long double sinhl	(long double x); double cosh  (double x); float  coshf (float  x);
       long double coshl  (long double x); double tanh	(double x); float  tanhf (float  x); long double tanhl	(long double x);

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       cosh():	XPG4

       sinh():	XPG4

       tanh():	XPG4

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

DESCRIPTION

       The sinh(), sinhf(), and sinhl() functions compute the hyperbolic sine of x.  Both sinh(x), sinhf(x), and sinhl(x) are defined as (exp(x) -
       exp(-x))/2.

       The  cosh(), coshf(),  and coshl() functions compute the hyperbolic cosine of x.  Both cosh(x), coshf(x), and coshl(x) are defined as (e**x
       + e**(-x))/2.

       The tanh(), tanhf(), and tanhl() functions compute the hyperbolic tangent of x.	Both tanh(x), tanhf(x), and tanhl(x) are defined as  (e**x
       - e**(-x))/(e**x + e**(-x)).

       The following table describes function behavior in response to exceptional arguments:

       --------------------------------------------------------------------
       Function 		  Exceptional Argument	  Routine Behavior
       --------------------------------------------------------------------
       sinh(), sinhf(), sinhl()   |x|>ln(2 * max_float)   Overflow

       cosh(), coshf(), coshl()   |x|>ln(2 * max_float)   Overflow
       --------------------------------------------------------------------

       The following table lists boundary values used by these functions:

       ---------------------------------------------------------------------
       Value Name	   Data Type   Hexadecimal Value   Decimal Value
       ---------------------------------------------------------------------
       ln(2 * max_float)   S_FLOAT     42B2D4FC 	   89.41599

			   T_FLOAT     408633CE8FB9F87E    710.475860073943
       ---------------------------------------------------------------------
       delim off

																	   sinh(3)

Check Out this Related Man Page

asinh(3)						     Library Functions Manual							  asinh(3)

NAME

       asinh, acosh, atanh - Compute inverse hyperbolic functions

LIBRARY

       Math Library (libm.a)

SYNOPSIS

       #include <math.h>

       double  asinh  (double x); float  asinhf (float	x); long double asinhl	   (long double x); double acosh  (double x); float  acoshf (float
       x); long double acoshl	  (long double x); double atanh  (double x); float  atanhf (float  x); long double atanhl     (long double x);

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       asinh():  XPG4-UNIX

       acosh():  XPG4-UNIX

       atanh():  XPG4-UNIX

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

DESCRIPTION

       The asinh(), asinhf(), and asinhl() functions return the hyperbolic arc sine of x, in the range [-infinity,  +infinity]	where  asinh(x)  =
       ln(x + sqrt(x**2 + 1)).	The asinh() function is the inverse function of sinh() where asinh(sinh(x)) = x.

       The  acosh(),  acoshf(),  and acoshl() functions return the hyperbolic arc cosine of x, in the range [1, +infinity] where acosh(x) = ln(x +
       sqrt(x**2 - 1)).  The acosh() function is the inverse function of cosh() where acosh(cosh(x)) = |x|.

       The atanh(), atanhf()  and atanhl() functions return the hyperbolic arc tangent of x, in the range (-1, 1).  The atanh()  function  is  the
       inverse function of tanh() where atanh(tanh(x)) = x.

       The following table describes function behavior in response to exceptional arguments:

       ---------------------------------------------------
       Function   Exceptional Argument	 Routine Behavior
       ---------------------------------------------------
       asinh()	  None			 N/A
       asinhf()   None			 N/A
       asinhl()   None			 N/A
       acosh()	  x<1			 Invalid argument
       acoshf()   x<1			 Invalid argument
       acoshl()   x<1			 Invalid argument
       atanh()	  x>1 or x=1		 Invalid argument
       atanhf()   x>1 or x=1		 Invalid argument
       atanhl()   x>1 or x=1		 Invalid argument
       ---------------------------------------------------
       delim off

																	  asinh(3)

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cosh(3) [osf1 man page]

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