[OMPT-svn-commit] OpenMPT r20330 - trunk/OpenMPT/src/mpt/base

[<sv...@op...>]

Author: manx
Date: Fri Mar 15 11:19:48 2024
New Revision: 20330
URL: https://source.openmpt.org/browse/openmpt/?op=revision&rev=20330

Log:
[Ref] mpt/base/numeric.hpp: Add mpt::saturate_align_up.

Modified:
   trunk/OpenMPT/src/mpt/base/numeric.hpp

Modified: trunk/OpenMPT/src/mpt/base/numeric.hpp
==============================================================================
--- trunk/OpenMPT/src/mpt/base/numeric.hpp	Fri Mar 15 08:50:11 2024	(r20329)
+++ trunk/OpenMPT/src/mpt/base/numeric.hpp	Fri Mar 15 11:19:48 2024	(r20330)
@@ -80,6 +80,16 @@
 	return (x / target) * target;
 }
 
+// rounds x up to multiples of target or saturation of T
+template <typename T>
+constexpr T saturate_align_up(T x, T target) {
+	if (x > (std::numeric_limits<T>::max() - (target - 1))) {
+		return std::numeric_limits<T>::max();
+	}
+	T result = ((x + (target - 1)) / target) * target;
+	return result;
+}
+
 // Returns sign of a number (-1 for negative numbers, 1 for positive numbers, 0 for 0)
 template <class T>
 constexpr int signum(T value) {