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authorJack Lloyd <[email protected]>2018-12-08 06:40:32 -0500
committerJack Lloyd <[email protected]>2018-12-08 06:40:32 -0500
commit1605c244695a9d2b871dc46c8dbe6bc3fced45a6 (patch)
tree83bc48802a45bed6e00313777f2f54330a006419 /src/lib/math/bigint/bigint.h
parentd1961721731654d39ef72bc28fe9167a850326e0 (diff)
parent9ea9ebe5cb72656717eea35836b0fb827a5cee86 (diff)
Merge GH #1774 Const time BigInt shifts
Diffstat (limited to 'src/lib/math/bigint/bigint.h')
-rw-r--r--src/lib/math/bigint/bigint.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/lib/math/bigint/bigint.h b/src/lib/math/bigint/bigint.h
index a987fffda..387bbe8f9 100644
--- a/src/lib/math/bigint/bigint.h
+++ b/src/lib/math/bigint/bigint.h
@@ -604,6 +604,13 @@ class BOTAN_PUBLIC_API(2,0) BigInt final
size_t bits() const;
/**
+ * Get the number of high bits unset in the top (allocated) word
+ * of this integer. Returns BOTAN_MP_WORD_BITS only iff *this is
+ * zero. Ignores sign.
+ */
+ size_t top_bits_free() const;
+
+ /**
* Return a mutable pointer to the register
* @result a pointer to the start of the internal register
*/