hypot(3m)                  DG/UX 4.30                   hypot(3m)



     NAME
          hypot - Euclidean distance function

     SYNOPSIS
          #include <math.h>

          double hypot (x, y)
          double x, y;

     DESCRIPTION
          Hypot returns

               sqrt(x * x + y * y)

          It takes precautions against unwarranted overflows.

     DIAGNOSTICS
          When the correct value would overflow, hypot returns HUGE
          and sets errno to ERANGE.

          You can change these error-handling procedures with the
          function matherr(3M).

     SEE ALSO
          matherr(3M).

     EXAMPLE
          /* Program test for the hypot() function */

          #include <stdio.h>
          #include <math.h>

          double  atof(), x, y, z, hypot();

          main(argc, argv)
          int     argc;
          char    *argv[];
          {
              x = atof(argv[1]);
              y = atof(argv[2]);
              printf("Hypotenuse = %f.\n", z = hypot(x, y));
          }

          A call to the program test with the numbers 3.3 and 4.4

          Hypotenuse = 5.500000.









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