changed: the size of built-in variables (constants) in ttmathbig.h
now they consist of 256 32bit words
macro TTMATH_BUILTIN_VARIABLES_SIZE is equal: 256u on a 32bit platform and 128ul on a 64bit platform
added: macro CONSTANTSGENERATOR which is useful for generating constants
(it's used by 'gen' program in 'constgen' directory)
after declaring this macro the methods: ExpSurrounding0() and LnSurrounding1() will be public visible
and the inner loop can do more iterations than TTMATH_ARITHMETIC_MAX_LOOP
changed: in methods: ExpSurrounding0() and LnSurrounding1() - the way of comparising with the last word
(now we're comparing not with the last state but with a state from a few words back)
git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@105 e52654a7-88a9-db11-a3e9-0013d4bc506e
fixed: Big::Add incorrectly rounded 'this' when both exponents were equal
it caused that sometimes when adding a zero the result has changed
this had impact among other things on FromString() method
"0,8" had different binary representation from "0,80"
changed: renamed: Big::PowUInt(UInt<pow_size> pow) -> Big::Pow(UInt<pow_size> pow)
it returns 2 when there is: 0^0
changed: renamed: Big::PowInt(Int<pow_size> pow) -> Big::Pow(Int<pow_size> pow)
it returns 2 when there is: 0^0 or 0^(-something)
changed: renamed: Big::PowBUInt() -> PowUInt(), Big::PowBInt() -> Big::PowInt()
they return 2 when the arguments are incorrect (like above)
changed: UInt::SetBitInWord(uint & value, uint bit) is taking the first argument by a reference now,
the specific bit is set in the 'value' and the method returns the last state of the bit (zero or one)
added: UInt::GetBit(uint bit_index) - returning the state of the specific bit
changed: UInt::SetBit(uint bit_index) - it's using TTMATH_ASSERT now
changed: Big::Mod2() - it's using mantissa.GetBit() now
added: Big::operator=(double) and Big::Big(double)
added: TTMATH_ASSERT somewhere in ttmathuint64.h
added: UInt::Pow(UInt<value_size> pow) and Int::Pow(Int<value_size> pow)
git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@104 e52654a7-88a9-db11-a3e9-0013d4bc506e
fixed: UInt::FindLeadingBitInWord(x) didn't correctly return result -1 when the x was 0
the mistake made by Thomas Braby, it was not in the 0.8.2 release
changed: tests: we do not test for lahf/sahf instructions now (in 64bit code)
we don't use these instructions
git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@97 e52654a7-88a9-db11-a3e9-0013d4bc506e
they are much faster than UInt::Rcl2(1,c) and Rcr2(1,c)
changed: UInt::Rcl() and UInt::Rcr()
we don't longer make the things with moving a half in the left and a half in the right
we simply use Rcl2_one() and Rcl2() /Rcr2_one() and Rcr2()/
git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@84 e52654a7-88a9-db11-a3e9-0013d4bc506e
(much faster now)
changed: asm code in: UInt::Rcl2, UInt::Rcr2 (32 and 64bit)
previous versions of Rcl2 and Rcr2 had O(n2) complexity,
now they have O(n) and are much faster
changed: now we do not use LAHF and SAHF instructions (both in 32 and 64 bit code)
git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@83 e52654a7-88a9-db11-a3e9-0013d4bc506e
32 and 64 bits, much faster now
added: tests for UInt::AddInt
fixed: tests: test_lahf() returned incorrect value for 32bit platform
git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@82 e52654a7-88a9-db11-a3e9-0013d4bc506e
there were used 'lahf' and 'sahf' instructions
probably they are supported in a new version of GCC
with '-msahf' option but GCC 4.2.1 has no such option
at the moment I'm using opcodes:
lahf -> 9f
sahf -> 9e
Warning! these instructions are not on all 64bit processors
from: http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86_002d64-Options.html
"Early Intel CPUs with Intel 64 lacked LAHF and SAHF instructions supported
by AMD64 until introduction of Pentium 4 G1 step in December 2005."
changed: UInt::Add on 64bit platform
changed: UInt::Add on 32bit platform (a little)
git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@80 e52654a7-88a9-db11-a3e9-0013d4bc506e
which is pointing at the end of the parsing string
added: initial import of tests: testing UInt::Add method
(not finished)
git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@79 e52654a7-88a9-db11-a3e9-0013d4bc506e
Tomasz Sowa