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-rw-r--r--src/common/common_funcs.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/common/common_funcs.h b/src/common/common_funcs.h
index 8b0d34da6..00a5698f3 100644
--- a/src/common/common_funcs.h
+++ b/src/common/common_funcs.h
@@ -4,6 +4,7 @@
#pragma once
+#include <algorithm>
#include <string>
#if !defined(ARCHITECTURE_x86_64)
@@ -60,4 +61,14 @@ constexpr u32 MakeMagic(char a, char b, char c, char d) {
return a | b << 8 | c << 16 | d << 24;
}
+template <class ForwardIt, class T, class Compare = std::less<>>
+ForwardIt BinaryFind(ForwardIt first, ForwardIt last, const T& value, Compare comp = {}) {
+ // Note: BOTH type T and the type after ForwardIt is dereferenced
+ // must be implicitly convertible to BOTH Type1 and Type2, used in Compare.
+ // This is stricter than lower_bound requirement (see above)
+
+ first = std::lower_bound(first, last, value, comp);
+ return first != last && !comp(value, *first) ? first : last;
+}
+
} // namespace Common