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Implement circular absolute position

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This commit is contained in:
Dennis Eichhorn 2016-10-08 21:07:48 +02:00
parent 22d6040dca
commit e47ece41af
1 changed files with 12 additions and 4 deletions
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16
Math/Functions/Functions.php
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@ -206,15 +206,17 @@ class Functions
return $t; return $t;
} }
public static function mod($a, $b) { public static function mod($a, $b)
if($a < 0) { {
if ($a < 0) {
return ($a + $b) % $b; return ($a + $b) % $b;
} }
return $a % $b; return $a % $b;
} }
public static function isOdd($a) : int { public static function isOdd($a) : bool
{
if ($a & 1) { if ($a & 1) {
return true; return true;
} }
@ -222,11 +224,17 @@ class Functions
return false; return false;
} }
public static function isEven($a) : int { public static function isEven($a) : bool
{
if ($a & 1) { if ($a & 1) {
return false; return false;
} }
return true; return true;
} }
public static function getRelativeDegree($value, $length, $start = 0)
{
return abs(self::mod($value - $start, $length));
}
} }