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added: Int::DivInt(int divisor, int * remainder)

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changed: added specializations to Big::ToString() when the base is equal 4, 8 or 16
         the previous version was not accurate on some last digits (after the comma operator)
         consider this binary value (32 bit mantissa):
         base 2: 1.1111 1111 1111 1111 1111 1111 1110 101
         previous ToString() gave:
            base 4:  1.33333333333332
            base 8:  1.777777777
            base 16: 1.FFFFFF
         now we have:
            base 4:  1.3333333333333222
            base 8:  1.77777777724
            base 16: 1.FFFFFFEA



git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@238 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
Tomasz Sowa
2009-11-09 17:42:10 +00:00
parent 4b4b30392a
commit 0d1a57bdb4
3 changed files with 214 additions and 4 deletions
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15
CHANGELOG
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@@ -1,4 +1,4 @@
Version 0.9.0 prerelease (2009.11.01):
Version 0.9.0 prerelease (2009.11.09):
* added: support for wide characters (wchar_t, std::wstring)
* added: Big::IsInteger()
returns true if the value is integer (without fraction)
@@ -47,6 +47,7 @@ Version 0.9.0 prerelease (2009.11.01):
* added: UInt::Sqrt() - a new algorithm for calculating the square root
* added: to the parser: function frac() - returns a value without the integer part
(only fraction remains)
* added: Int::DivInt(int divisor, int * remainder)
* changed: Factorial() is using the Gamma() function now
* changed: Big::Div(ss2)
Big::Mod(ss2)
@@ -55,6 +56,18 @@ Version 0.9.0 prerelease (2009.11.01):
* changed: algorithms in Big::Sqrt() and ttmath::Root(x ; n)
they were not too much accurate for some integers
e.g. Root(16;4) returned a value very closed to 2 (not exactly 2)
* changed: added specializations to Big::ToString() when the base is equal 4, 8 or 16
the previous version was not accurate on some last digits (after the comma operator)
consider this binary value (32 bit mantissa):
base 2: 1.1111 1111 1111 1111 1111 1111 1110 101
previous ToString() gave:
base 4: 1.33333333333332
base 8: 1.777777777
base 16: 1.FFFFFF
now we have:
base 4: 1.3333333333333222
base 8: 1.77777777724
base 16: 1.FFFFFFEA
* removed: Parser<>::SetFactorialMax() method
the factorial() is such a fast now that we don't need the method longer
* removed: ErrorCode::err_too_big_factorial