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added: option 'group_digits' to Conv struct 

you can set how many digits should be grouped



git-svn-id: svn://ttmath.org/publicrep/ttmath/trunk@338 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
Tomasz Sowa 2011-01-30 17:34:42 +00:00
parent c51b2fdcc9
commit 231164f6ea
5 changed files with 29 additions and 10 deletions
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4
CHANGELOG
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@ -1,9 +1,11 @@
Version 0.9.3 prerelease (2010.09.29):
Version 0.9.3 prerelease (2011.01.30):
* added: Parser::InitCGamma()
initializing coefficients used when calculating the gamma (or factorial) function
this speed up the next calculations
you don't have to call this method explicitly
these coefficients will be calculated when needed
* added: option 'group_digits' to Conv struct
you can set how many digits should be grouped
Version 0.9.2 (2010.09.23):

2
COPYRIGHT
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@ -1,4 +1,4 @@
Copyright (c) 2006-2010, Tomasz Sowa
Copyright (c) 2006-2011, Tomasz Sowa
All rights reserved.
Redistribution and use in source and binary forms, with or without

20
ttmath/ttmathbig.h
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@ -5,7 +5,7 @@
*/
/*
* Copyright (c) 2006-2010, Tomasz Sowa
* Copyright (c) 2006-2011, Tomasz Sowa
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -4738,15 +4738,19 @@ private:
typename string_type::size_type & index) const
{
typedef typename string_type::size_type StrSize;
uint group = 0;
uint group = 0;
StrSize i = index;
uint group_digits = conv.group_digits;
if( group_digits < 1 )
group_digits = 1;
// adding group characters before the comma operator
// i>0 because on the first position we don't put any additional grouping characters
for( ; i>0 ; --i, ++group)
{
if( group >= 3 )
if( group >= group_digits )
{
group = 0;
new_man.insert(i, 1, static_cast<char_type>(conv.group));
@ -4763,11 +4767,15 @@ private:
void ToString_Group_man_after_comma(string_type & new_man, const Conv & conv,
typename string_type::size_type index) const
{
uint group = 0;
uint group = 0;
uint group_digits = conv.group_digits;
if( group_digits < 1 )
group_digits = 1;
for( ; index<new_man.size() ; ++index, ++group)
{
if( group >= 3 )
if( group >= group_digits )
{
group = 0;
new_man.insert(index, 1, static_cast<char_type>(conv.group));

10
ttmath/ttmathtypes.h
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@ -5,7 +5,7 @@
*/
/*
* Copyright (c) 2006-2010, Tomasz Sowa
* Copyright (c) 2006-2011, Tomasz Sowa
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -465,6 +465,13 @@ namespace ttmath
uint group;
/*!
how many digits should be grouped (it is used if 'group' is non zero)
default: 3
*/
uint group_digits;
/*!
*/
uint group_exp; // not implemented yet
@ -484,6 +491,7 @@ namespace ttmath
comma = '.';
comma2 = ',';
group = 0;
group_digits = 3;
group_exp = 0;
}
};

3
ttmath/ttmathuint.h
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@ -3225,7 +3225,8 @@ private:
{
temp.DivInt(b, &rem);
character = static_cast<char>( Misc::DigitToChar(rem) );
result.insert(result.begin(), character);
result.insert(result.begin(), character); // !! it has O(n^2) complexity, change it
// take the one from winix
}
while( !temp.IsZero() );