Index for Section 3

Alphabetical listing for S

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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
  ____________________________________________________________________

Index for Section 3

Alphabetical listing for S

Top of page