Change rescaleInput function definition

Makes the function static and changes both Range arguments to pass by const reference rather than copy, as the function does not need to (and shouldn't!) modify the input ranges.

Author: dmadison

src/XInput.cpp

@@ -514,7 +514,7 @@ XInputController::Range * XInputController::getRangeFromEnum(XInputControl ctrl)
 	}
 }
 
-int32_t XInputController::rescaleInput(int32_t val, Range in, Range out) {
+int32_t XInputController::rescaleInput(int32_t val, const Range& in, const Range& out) {
 	if (val <= in.min) return out.min;  // Out of range -
 	if (val >= in.max) return out.max;  // Out of range +
 	if (in.min == out.min && in.max == out.max) return val;  // Ranges identical

src/XInput.h

@@ -161,7 +161,7 @@ class XInputController {
 	// Control Input Ranges
 	Range rangeTrigLeft, rangeTrigRight, rangeJoyLeft, rangeJoyRight;
 	Range * getRangeFromEnum(XInputControl ctrl);
-	int32_t rescaleInput(int32_t val, Range in, Range out);
+	static int32_t rescaleInput(int32_t val, const Range& in, const Range &out);
 };
 
 extern XInputController XInput;