summaryrefslogtreecommitdiff
path: root/libtommath/bn_mp_pack_count.c
diff options
context:
space:
mode:
Diffstat (limited to 'libtommath/bn_mp_pack_count.c')
-rw-r--r--libtommath/bn_mp_pack_count.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/libtommath/bn_mp_pack_count.c b/libtommath/bn_mp_pack_count.c
new file mode 100644
index 0000000..dfecdf9
--- /dev/null
+++ b/libtommath/bn_mp_pack_count.c
@@ -0,0 +1,12 @@
+#include "tommath_private.h"
+#ifdef BN_MP_PACK_COUNT_C
+/* LibTomMath, multiple-precision integer library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
+size_t mp_pack_count(const mp_int *a, size_t nails, size_t size)
+{
+ size_t bits = (size_t)mp_count_bits(a);
+ return ((bits / ((size * 8u) - nails)) + (((bits % ((size * 8u) - nails)) != 0u) ? 1u : 0u));
+}
+
+#endif