Index for Section 3

Alphabetical listing for H

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hypot(3)
NAME
  hypot, cabs, fabs - Calculate Euclidean distance and absolute value

LIBRARY
  Math Library (libm.a)

SYNOPSIS
  #include <math.h>

  double hypot	(double x, double y);
  float	 hypotf (float	x, float  y);
  long double hypotl  (long double x, long double y);
  double cabs	(double x, double y);
  float	 cabsf	(float	x, float  y);
  long double cabsl   (long double x, long double y);
  double fabs	(double x);
  float	 fabsf	(float	x);
  long double fabsl   (long double x);

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

  hypot():  XPG4

  fabs():  XPG4

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

DESCRIPTION
  The hypot(), hypotf(), and hypotl() functions compute the length of the
  hypotenuse of a right triangle, where x and y represent the perpendicular
  sides of the triangle.  The hypot(x,y), hypotf(x,y) and hypotl(x,y)
  functions are defined as sqrt(x**2 + y**2).

  The cabs(), cabsf(), and cabsl() functions return the complex absolute
  value of x. The cabs(), cabsf(),
   and cabsfl) functions are defined as hypot() and hypotf(), respectively.

  The fabs(), fabsf(), and fabsl() functions compute the absolute value of x.

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

  ____________________________________________________________________________
  Function			Exceptional Argument	      Routine Behavior
  ____________________________________________________________________________
  hypot(), hypotf(), hypotl()	sqrt(x**2 + y**2)>max_float   Overflow
  cabs(), cabsf(), cabsl()	sqrt(x**2 + y**2)>max_float   Overflow
  ____________________________________________________________________________

  The following table lists boundary values used by these functions:
  _________________________________________________________________________
  Value		  Data		 Hexadecimal Value	Decimal Value
  Name		  Type
  _________________________________________________________________________
  max_float	  S_FLOAT	 7F7FFFFF		3.402823e38
		  T_FLOAT	 7FEFFFFFFFFFFFFF	1.7976931348623e308
  _________________________________________________________________________

Index for Section 3

Alphabetical listing for H

Top of page