From 76c62b49e060cf5ee21dc5fd10dd0179f1313a88 Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Sat, 4 Jun 2022 12:06:34 +0900
Subject: [PATCH] [set] Add a macro to initialize with a static array

Nicer than trying to hack one one every time (and it looks like my
previous attempt was wrong anyway)
---
 include/QF/set.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/QF/set.h b/include/QF/set.h
index 1d59ed395..e7d75e4f5 100644
--- a/include/QF/set.h
+++ b/include/QF/set.h
@@ -52,6 +52,7 @@ typedef uint32_t set_bits_t;
 #define SET_BITS (sizeof (set_bits_t) * 8)
 //NOTE: x is the element number, so size is x + 1
 #define SET_SIZE(x) (((x) + SET_BITS) & ~(SET_BITS - 1))
+#define SET_WORDS_STATIC(x) (SET_SIZE (x) / SET_BITS)
 #define SET_WORDS(s) ((s)->size / SET_BITS)
 #define SET_ZERO ((set_bits_t) 0)
 #define SET_ONE ((set_bits_t) 1)
@@ -65,6 +66,14 @@ typedef uint32_t set_bits_t;
 	.size = SET_SIZE (x), \
 	.map = alloc (SET_SIZE (x) / 8), \
 }
+#define SET_STATIC_ARRAY(array) { \
+	.size = 8 * __builtin_choose_expr ( \
+		sizeof (array[0]) == sizeof (set_bits_t), \
+		sizeof (array), \
+		(void) 0 \
+	), \
+	.map = array, \
+}
 
 /** Represent a set using a bitmap.