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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);
  double cabs	(double x, double y);
  float	 cabsf	(float	x, float  y);
  double fabs	(double x);
  float	 fabsf	(float	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() and hypotf() 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) and hypotf(x,y) functions are defined as
  sqrt(x**2 + y**2).

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

  The fabs() and fabsf() 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()   sqrt(x**2 + y**2)>max_float   Overflow
  cabs(), cabsf()     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
  _________________________________________________________________________