ewah_bitmap: delete unused 'ewah_and_not()'

derrickstolee · gitster · commit 19436fe03a58 · 2018-06-18T10:16:19.000-07:00
Reported-by: Ramsay Jones &lt;ramsay@ramsayjones.plus.com&gt;
Signed-off-by: Derrick Stolee &lt;dstolee@microsoft.com&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/ewah/ewah_bitmap.c b/ewah/ewah_bitmap.c
@@ -459,79 +459,6 @@ void ewah_xor(
 	out->bit_size = max_size(ewah_i->bit_size, ewah_j->bit_size);
 }
 
-void ewah_and_not(
-	struct ewah_bitmap *ewah_i,
-	struct ewah_bitmap *ewah_j,
-	struct ewah_bitmap *out)
-{
-	struct rlw_iterator rlw_i;
-	struct rlw_iterator rlw_j;
-	size_t literals;
-
-	rlwit_init(&rlw_i, ewah_i);
-	rlwit_init(&rlw_j, ewah_j);
-
-	while (rlwit_word_size(&rlw_i) > 0 && rlwit_word_size(&rlw_j) > 0) {
-		while (rlw_i.rlw.running_len > 0 || rlw_j.rlw.running_len > 0) {
-			struct rlw_iterator *prey, *predator;
-
-			if (rlw_i.rlw.running_len < rlw_j.rlw.running_len) {
-				prey = &rlw_i;
-				predator = &rlw_j;
-			} else {
-				prey = &rlw_j;
-				predator = &rlw_i;
-			}
-
-			if ((predator->rlw.running_bit && prey == &rlw_i) ||
-				(!predator->rlw.running_bit && prey != &rlw_i)) {
-				ewah_add_empty_words(out, 0,
-					predator->rlw.running_len);
-				rlwit_discard_first_words(prey,
-					predator->rlw.running_len);
-				rlwit_discard_first_words(predator,
-					predator->rlw.running_len);
-			} else {
-				size_t index;
-				int negate_words;
-
-				negate_words = (&rlw_i != prey);
-				index = rlwit_discharge(prey, out,
-					predator->rlw.running_len, negate_words);
-				ewah_add_empty_words(out, negate_words,
-					predator->rlw.running_len - index);
-				rlwit_discard_first_words(predator,
-					predator->rlw.running_len);
-			}
-		}
-
-		literals = min_size(
-			rlw_i.rlw.literal_words,
-			rlw_j.rlw.literal_words);
-
-		if (literals) {
-			size_t k;
-
-			for (k = 0; k < literals; ++k) {
-				ewah_add(out,
-					rlw_i.buffer[rlw_i.literal_word_start + k] &
-					~(rlw_j.buffer[rlw_j.literal_word_start + k])
-				);
-			}
-
-			rlwit_discard_first_words(&rlw_i, literals);
-			rlwit_discard_first_words(&rlw_j, literals);
-		}
-	}
-
-	if (rlwit_word_size(&rlw_i) > 0)
-		rlwit_discharge(&rlw_i, out, ~0, 0);
-	else
-		rlwit_discharge_empty(&rlw_j, out);
-
-	out->bit_size = max_size(ewah_i->bit_size, ewah_j->bit_size);
-}
-
 void ewah_or(
 	struct ewah_bitmap *ewah_i,
 	struct ewah_bitmap *ewah_j,
diff --git a/ewah/ewok.h b/ewah/ewok.h
@@ -169,11 +169,6 @@ void ewah_or(
 	struct ewah_bitmap *ewah_j,
 	struct ewah_bitmap *out);
 
-void ewah_and_not(
-	struct ewah_bitmap *ewah_i,
-	struct ewah_bitmap *ewah_j,
-	struct ewah_bitmap *out);
-
 void ewah_xor(
 	struct ewah_bitmap *ewah_i,
 	struct ewah_bitmap *ewah_j,
