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fixed: the parser didn't use characters for changing the base (# and &)

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those characters were skipped
         (this bug was introduced in 0.9.0)
added:   to Big::ToString() - additional rounding when conv.base_round is used
         if the value is not an integer we calculate how many valid digits there are
         after the comma operator (in conv.base radix) and then we skipped the rest
         digits, after skipping the base-rounding is made
         this helps to print values which have some last clear bits in the mantissa
         consider this 32 bit value:
         (binary)0.00011100001010001111010111000000000
         which has mantissa equal: (binary)11100001010001111010111000000000 (32 bits)
         previous the ToString() method gave: (decimal)0.10999999[...] 
         now we have: (decimal)0.11
added:   Parser::SetSmallToZero(bool zero) (default true)
         if true then the parser changes small values into zero
         small value means:
         - if the mantissa of the value consists only of one, two or three set bits
         - and these bits are next to each other
         - and the exponent is smaller than about 2 times the number of bits from the mantissa
         this helps to correctly calculate expressions such as: "0.80-3*0.34+0.22"
         now the parser gives zero (previous there was a value very closed to zero)
added:   UInt::FindLowestBit(uint & table_id, uint & index)
         /temporary version - asm version is missing /



git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@256 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
Tomasz Sowa
2009-12-05 18:13:53 +00:00
parent 321953e833
commit 72052420dd
4 changed files with 345 additions and 22 deletions
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23
CHANGELOG
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@@ -1,8 +1,29 @@
Version 0.9.1 (2009.12.02):
Version 0.9.1 prerelease (2009.12.05):
* fixed: the parser didn't use characters for changing the base (# and &)
those characters were skipped
(this bug was introduced in 0.9.0)
* added: to Big::ToString() - additional rounding when conv.base_round is used
if the value is not an integer we calculate how many valid digits there are
after the comma operator (in conv.base radix) and then we skipped the rest
digits, after skipping the base-rounding is made
this helps to print values which have some last clear bits in the mantissa
consider this 32 bit value:
(binary)0.00011100001010001111010111000000000
which has mantissa equal: (binary)11100001010001111010111000000000 (32 bits)
previous the ToString() method gave: (decimal)0.10999999[...]
now we have: (decimal)0.11
* added: Parser::SetSmallToZero(bool zero) (default true)
if true then the parser changes small values into zero
small value means:
- if the mantissa of the value consists only of one, two or three set bits
- and these bits are next to each other
- and the exponent is smaller than about 2 times the number of bits from the mantissa
this helps to correctly calculate expressions such as: "0.80-3*0.34+0.22"
now the parser gives zero (previous there was a value very closed to zero)
* added: UInt::FindLowestBit(uint & table_id, uint & index)
/temporarily version - asm version is missing /
Version 0.9.0 (2009.11.25):
* added: support for wide characters (wchar_t, std::wstring)
* added: Big::IsInteger()