From 146fa7e79e8fa39648c6d5baec7fe704502c59bd Mon Sep 17 00:00:00 2001
From: terminx <terminx@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Sat, 6 Apr 2019 06:37:22 +0000
Subject: [PATCH] Add simple bitmap manipulation functions

git-svn-id: https://svn.eduke32.com/eduke32@7475 1a8010ca-5511-0410-912e-c29ae57300e0
---
 source/build/include/compat.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/source/build/include/compat.h b/source/build/include/compat.h
index 926e6639f..a49e2c5b5 100644
--- a/source/build/include/compat.h
+++ b/source/build/include/compat.h
@@ -1119,6 +1119,11 @@ static inline void append_ext_UNSAFE(char *outbuf, const char *ext)
         Bstrcpy(p, ext);
 }
 
+////////// Bitfield manipulation //////////
+
+static FORCE_INLINE void bitmap_set(uint8_t *const ptr, int const n) { ptr[n >> 3] |= 1 << (n & 7); }
+static FORCE_INLINE void bitmap_clear(uint8_t *const ptr, int const n) { ptr[n >> 3] &= ~(1 << (n & 7)); }
+static FORCE_INLINE CONSTEXPR char bitmap_test(uint8_t const *const ptr, int const n) { return ptr[n >> 3] & (1 << (n & 7)); }
 
 /* Begin dependence on compat.o object. */