src/152c8793-8b75-4715-996a-257b9f65451c/README.md

@@ -11,7 +11,8 @@
 ```uml
 @startuml
 abstract MathHelper  #Orange {
-  + {static} bc(string $type, int $val1, ...) : int
+  + {static} bc(string $type, int $val1, ...) : string|int|null|bool
+  + {static} sum(array $array, int $scale = 4) : float
   + {static} sum(array $array, int $scale = 4) : float
 }
 
@@ -19,7 +20,7 @@ note right of MathHelper::bc
   bc math wrapper (very basic not for accounting)
 
   since: 3.0.9
-  return: int
+  return: string|int|null|bool
   
   arguments:
     string $type
@@ -31,6 +32,10 @@ end note
 note right of MathHelper::sum
   Basic sum of an array with more precision
 
+  since: 3.0.9
+  return: float
+  Basic sum of an array with more precision
+
   since: 3.0.9
   return: float
 end note

src/152c8793-8b75-4715-996a-257b9f65451c/code.php

@@ -27,48 +27,75 @@ abstract class MathHelper
 	 * @param   int      $val2    The second value
 	 * @param   int      $scale   The scale value
 	 *
-	 * @return int
+	 * @return string|int|null|bool
 	 * 
 	 * @since  3.0.9
 	 */
 	public static function bc($type, $val1, $val2, $scale = 0)
 	{
-		// build function name
+		// Validate input
+		if (!is_numeric($val1) || !is_numeric($val2))
+		{
+			return null;
+		}
+
+		// Build function name
 		$function = 'bc' . $type;
-		// use the bcmath function if available
+
-		if (function_exists($function))
+		// Use the bcmath function if available
+		if (is_callable($function))
 		{
 			return $function($val1, $val2, $scale);
 		}
+
 		// if function does not exist we use +-*/ operators (fallback - not ideal)
 		switch ($type)
 		{
-			// Multiply two numbers
 			case 'mul':
 				return (string) round($val1 * $val2, $scale);
-				break;
-			// Divide of two numbers
 			case 'div':
+				if ($val2 == 0) return null; // Avoid division by zero
 				return (string) round($val1 / $val2, $scale);
-				break;
-			// Adding two numbers
 			case 'add':
 				return (string) round($val1 + $val2, $scale);
-				break;
-			// Subtract one number from the other
 			case 'sub':
 				return (string) round($val1 - $val2, $scale);
-				break;
-			// Raise an arbitrary precision number to another
 			case 'pow':
 				return (string) round(pow($val1, $val2), $scale);
-				break;
-			// Compare two arbitrary precision numbers
 			case 'comp':
-				return (round($val1,2) == round($val2,2));
+				$diff = round($val1 - $val2, $scale);
-				break;
+				return ($diff > 0) ? 1 : (($diff < 0) ? -1 : 0);
 		}
-		return false;
+
+		return null;
+	}
+
+	/**
+	 * Basic sum of an array with more precision
+	 *
+	 * @param   array   $array    The values to sum
+	 * @param   int      $scale   The scale value
+	 *
+	 * @return float
+	 * 
+	 * @since  3.0.9
+	 */
+	public static function sum($array, $scale = 4)
+	{
+		// use the bcadd function if available
+		if (function_exists('bcadd'))
+		{
+			// set the start value
+			$value = 0.0;
+			// loop the values and run bcadd
+			foreach($array as $val)
+			{
+				$value = bcadd($value, (string) $val, $scale);
+			}
+			return $value;
+		}
+		// fall back on array sum
+		return array_sum($array);
 	}
 
 	/**

src/152c8793-8b75-4715-996a-257b9f65451c/code.power

@@ -6,48 +6,75 @@
 	 * @param   int      $val2    The second value
 	 * @param   int      $scale   The scale value
 	 *
-	 * @return int
+	 * @return string|int|null|bool
 	 * 
 	 * @since  3.0.9
 	 */
 	public static function bc($type, $val1, $val2, $scale = 0)
 	{
-		// build function name
+		// Validate input
+		if (!is_numeric($val1) || !is_numeric($val2))
+		{
+			return null;
+		}
+
+		// Build function name
 		$function = 'bc' . $type;
-		// use the bcmath function if available
+
-		if (function_exists($function))
+		// Use the bcmath function if available
+		if (is_callable($function))
 		{
 			return $function($val1, $val2, $scale);
 		}
+
 		// if function does not exist we use +-*/ operators (fallback - not ideal)
 		switch ($type)
 		{
-			// Multiply two numbers
 			case 'mul':
 				return (string) round($val1 * $val2, $scale);
-				break;
-			// Divide of two numbers
 			case 'div':
+				if ($val2 == 0) return null; // Avoid division by zero
 				return (string) round($val1 / $val2, $scale);
-				break;
-			// Adding two numbers
 			case 'add':
 				return (string) round($val1 + $val2, $scale);
-				break;
-			// Subtract one number from the other
 			case 'sub':
 				return (string) round($val1 - $val2, $scale);
-				break;
-			// Raise an arbitrary precision number to another
 			case 'pow':
 				return (string) round(pow($val1, $val2), $scale);
-				break;
-			// Compare two arbitrary precision numbers
 			case 'comp':
-				return (round($val1,2) == round($val2,2));
+				$diff = round($val1 - $val2, $scale);
-				break;
+				return ($diff > 0) ? 1 : (($diff < 0) ? -1 : 0);
 		}
-		return false;
+
+		return null;
+	}
+
+	/**
+	 * Basic sum of an array with more precision
+	 *
+	 * @param   array   $array    The values to sum
+	 * @param   int      $scale   The scale value
+	 *
+	 * @return float
+	 * 
+	 * @since  3.0.9
+	 */
+	public static function sum($array, $scale = 4)
+	{
+		// use the bcadd function if available
+		if (function_exists('bcadd'))
+		{
+			// set the start value
+			$value = 0.0;
+			// loop the values and run bcadd
+			foreach($array as $val)
+			{
+				$value = bcadd($value, (string) $val, $scale);
+			}
+			return $value;
+		}
+		// fall back on array sum
+		return array_sum($array);
 	}
 
 	/**