diff options
Diffstat (limited to 'src/lib/math/bigint/bigint.cpp')
-rw-r--r-- | src/lib/math/bigint/bigint.cpp | 39 |
1 files changed, 3 insertions, 36 deletions
diff --git a/src/lib/math/bigint/bigint.cpp b/src/lib/math/bigint/bigint.cpp index 6acd04f00..b5a8e0dd5 100644 --- a/src/lib/math/bigint/bigint.cpp +++ b/src/lib/math/bigint/bigint.cpp @@ -1,6 +1,6 @@ /* * BigInt Base -* (C) 1999-2011,2012 Jack Lloyd +* (C) 1999-2011,2012,2014 Jack Lloyd * * Botan is released under the Simplified BSD License (see license.txt) */ @@ -93,15 +93,6 @@ BigInt::BigInt(RandomNumberGenerator& rng, size_t bits) } /* -* Grow the internal storage -*/ -void BigInt::grow_to(size_t n) - { - if(n > size()) - m_reg.resize(round_up<size_t>(n, 8)); - } - -/* * Comparison Function */ s32bit BigInt::cmp(const BigInt& other, bool check_signs) const @@ -155,8 +146,8 @@ u32bit BigInt::to_u32bit() const throw Encoding_Error("BigInt::to_u32bit: Number is too big to convert"); u32bit out = 0; - for(u32bit j = 0; j != 4; ++j) - out = (out << 8) | byte_at(3-j); + for(size_t i = 0; i != 4; ++i) + out = (out << 8) | byte_at(3-i); return out; } @@ -183,30 +174,6 @@ void BigInt::clear_bit(size_t n) } /* -* Clear all but the lowest n bits -*/ -void BigInt::mask_bits(size_t n) - { - if(n == 0) { clear(); return; } - - const size_t top_word = n / MP_WORD_BITS; - const word mask = (static_cast<word>(1) << (n % MP_WORD_BITS)) - 1; - - if(top_word < size()) - clear_mem(&m_reg[top_word+1], size() - (top_word + 1)); - - m_reg[top_word] &= mask; - } - -/* -* Count how many bytes are being used -*/ -size_t BigInt::bytes() const - { - return (bits() + 7) / 8; - } - -/* * Count how many bits are being used */ size_t BigInt::bits() const |