note 25852 added to function.is-bool

# basic fuzzy logic.. # extends out our boolean logic further... # # truth(not x) = 1.0 - truth(x) # truth(x and y) = minimum (truth(x), truth(y)) # truth(x or y) = maximum (truth(x), truth(y)) # uncomment below to test. /* $fz1 = 0.5; // 0.5 start $fz2 = fuzz(fuzz($fz1, 0.4, "&") , fuzz(0.45, "", "|"), "&");// 0.45 $fz3 = fuzz(fuzz($fz2, $fz2, "!"), $fz2, "|");// 0.55 $fz4 = fuzz(fuzz($fz1, $fz1, "!"), $fz2, "-"); // 0.95 $bl5 = fuzz ($fz3, $fz2); // false $bl6 = fuzz ($fz2, $fz3);// true echo "fz1 = " .$fz1 . "<br>"; echo "fz2 = " .$fz2 . "<br>"; echo "fz3 = " .$fz3 . "<br>"; echo "fz4 = " .$fz4 . "<br>"; echo "bl5 = " . (($bl5) ? "true" : "false") ."<br>"; echo "bl6 = " . (($bl6) ? "true" : "false"); */ function fuzmin($a, $b){ return (($a < $b) ? $a : $b); }// end function function fuzmax($a, $b){ return (($a > $b) ? $a : $b); }// end function function fuzz($a, $b=0, $op=""){ switch ($op){ case "|": return ($a > $b) ? $a : $b; break; case "&": return ($a < $b) ? $a : $b; break; case "!": return 1 - $a; break; case "+": return $a+$b; break; case "-": return $a-$b; case "*": return $a*$b; case "/": return $a/$b; default : return ($a <= $b); }//case }//function -- http://www.php.net/manual/en/function.is-bool.php http://master.php.net/manage/user-notes.php?action=edit+25852 http://master.php.net/manage/user-notes.php?action=delete+25852 http://master.php.net/manage/user-notes.php?action=reject+25852