From 3ed675101aad3dcc948ad0e1d41e55d65e693740 Mon Sep 17 00:00:00 2001 From: Jeff King Date: Tue, 8 Dec 2020 17:03:46 -0500 Subject: ewah: implement bitmap_or() We have a function to bitwise-OR an ewah into an uncompressed bitmap, but not to OR two uncompressed bitmaps. Let's add it. Interestingly, we have a public header declaration going back to e1273106f6 (ewah: compressed bitmap implementation, 2013-11-14), but the function was never implemented. That was all OK since there were no users of 'bitmap_or()', but a first caller will be added in a couple of patches. Signed-off-by: Jeff King Signed-off-by: Taylor Blau Signed-off-by: Junio C Hamano --- ewah/bitmap.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'ewah') diff --git a/ewah/bitmap.c b/ewah/bitmap.c index 6f9e5c529b..0a3502603f 100644 --- a/ewah/bitmap.c +++ b/ewah/bitmap.c @@ -122,6 +122,15 @@ void bitmap_and_not(struct bitmap *self, struct bitmap *other) self->words[i] &= ~other->words[i]; } +void bitmap_or(struct bitmap *self, const struct bitmap *other) +{ + size_t i; + + bitmap_grow(self, other->word_alloc); + for (i = 0; i < other->word_alloc; i++) + self->words[i] |= other->words[i]; +} + void bitmap_or_ewah(struct bitmap *self, struct ewah_bitmap *other) { size_t original_size = self->word_alloc; -- cgit v1.2.3