Index for Section 3

Alphabetical listing for S

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sinh(3)
NAME
  sinh, cosh, tanh - Hyperbolic functions

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 );

LIBRARY
  Math Library (libm)

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
  ___________________________________________________________________
				|x|>ln(2 * max_float)	Overflow

  sinh(), sinhf(), sinhl()
				|x|>ln(2 * max_float)	Overflow

  cosh(), coshf(), coshl()
  ___________________________________________________________________

  The following table lists boundary values used by these functions:

  ________________________________________________________________
  Value Name	  Data Type   Hexadecimal Value	  Decimal Value
  ________________________________________________________________
		  S_FLOAT     42B2D4FC		  89.41599

  ln(2 *
  max_float)
		  T_FLOAT     408633CE8FB9F87E	  710.475860073943
  ________________________________________________________________

Index for Section 3

Alphabetical listing for S

Top of page