coshf(3) [netbsd man page]

COSH(3) 						   BSD Library Functions Manual 						   COSH(3)

NAME

     cosh, coshf -- hyperbolic cosine function

LIBRARY

     Math Library (libm, -lm)

SYNOPSIS

     #include <math.h>

     double
     cosh(double x);

     float
     coshf(float x);

DESCRIPTION

     The cosh() and coshf() functions compute the hyperbolic cosine of x.

RETURN VALUES

     If the magnitude of x is too large, cosh(x) and coshf(x) return Inf and sets the global variable errno to ERANGE.

SEE ALSO

     acos(3), asin(3), atan(3), atan2(3), cos(3), math(3), sin(3), sinh(3), tan(3), tanh(3)

STANDARDS

     The cosh() function conforms to ANSI X3.159-1989 (``ANSI C89'').

BSD
								    May 2, 1991 							       BSD

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)