File Source for Maths.php

JAMA

# Source for file Maths.php

Documentation is available at Maths.php

1. <?php
2. /**
3. * @package JAMA
4. *
5. * Pythagorean Theorem:
6. *
7. * a = 3
8. * b = 4
9. * r = sqrt(square(a) + square(b))
10. * r = 5
11. *
12. * r = sqrt(a^2 + b^2) without under/overflow.
13. */
14. function hypo($a, $b) {
15. if ( abs($a) > abs($b)) {
16. $r = $b / $a;
17. $r = abs($a) * sqrt(1 + $r * $r);
18. } elseif ($b != 0) {
19. $r = $a / $b;
20. $r = abs($b) * sqrt(1 + $r * $r);
21. } else {
22. $r = 0.0;
23. }
24. return $r;
25. } // function hypo()
28. /**
29. * Mike Bommarito's version.
30. * Compute n-dimensional hyotheneuse.
31. *
32. function hypot() {
33. $s = 0;
34. foreach (func_get_args() as $d) {
35. if (is_numeric($d)) {
36. $s += pow($d, 2);
37. } else {
38. throw new Exception(JAMAError(ArgumentTypeException));
39. }
40. }
41. return sqrt($s);
42. }
43. */

Documentation generated on Sun, 27 Feb 2011 16:32:36 -0800 by phpDocumentor 1.4.3