opensolaris man page for coshf

cosh(3M)						  Mathematical Library Functions						  cosh(3M)

NAME
       cosh, coshf, coshl - hyperbolic cosine function

SYNOPSIS
       c99 [ flag... ] file... -lm [ library... ]
       #include <math.h>

       double cosh(double x);

       float coshf(float x);

       long double coshl(long double x);

DESCRIPTION
       These functions compute the hyperbolic cosine of their argument x.

RETURN VALUES
       Upon successful completion, these functions return the hyperbolic cosine of x.

       If  the	correct  value would cause overflow, a range error occurs and cosh(), coshf(), and coshl() return the value of the macro HUGE_VAL,
       HUGE_VALF, and HUGE_VALL, respectively.

       If x is NaN, a NaN is returned.

       If x is +-0, 1.0 is returned.

       If x is +-Inf, +-Inf is returned.

       For exceptional cases, matherr(3M) tabulates the values to be returned by cosh() as specified by SVID3 and XPG3.

ERRORS
       These functions will fail if:

       Range Error    The result would cause an overflow.

		      If the integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero, the overflow floating-point exception is raised.

		      The cosh() function sets errno to ERANGE if the result would cause an overflow.

USAGE
       An application wanting to check for exceptions should call feclearexcept(FE_ALL_EXCEPT) before  calling	these  functions.  On  return,	if
       fetestexcept(FE_INVALID	|  FE_DIVBYZERO  |  FE_OVERFLOW  |  FE_UNDERFLOW) is non-zero, an exception has been raised. An application should
       either examine the return value or check the floating point exception flags to detect exceptions.

       An application can also set errno to 0 before calling cosh(). On return, if errno is non-zero, an  error  has  occurred.  The  coshf()  and
       coshl() functions do not set errno.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       acosh(3M), feclearexcept(3M), fetestexcept(3M), isnan(3M), math.h(3HEAD), matherr(3M), sinh(3M), tanh(3M), attributes(5), standards(5)

SunOS 5.11							    12 Jul 2006 							  cosh(3M)