Index for Section 3

Alphabetical listing for H

Bottom of page

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

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 );

LIBRARY
  Math Library (libm)

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
  ___________________________________________________________________________
				  sqrt(x**2 + y**2)>max_float	Overflow

  hypot(), hypotf(), hypotl()
				  sqrt(x**2 + y**2)>max_float	Overflow

  cabs(), cabsf(), cabsl()
  ___________________________________________________________________________

  The following table lists boundary values used by these functions:

  ________________________________________________________________
  Value Name   Data Type   Hexadecimal Value   Decimal Value
  ________________________________________________________________
  max_float    S_FLOAT	   7F7FFFFF	       3.402823e38
	       T_FLOAT	   7FEFFFFFFFFFFFFF    1.7976931348623e308
  ________________________________________________________________

Index for Section 3

Alphabetical listing for H

Top of page