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tinyxml2
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implement a fix to floating point precision as proposed by schuellc.

This commit is contained in:
Lee Thomason 2014-01-14 12:30:03 -08:00
parent 61871d60a6
commit c3708ccf08
5 changed files with 80 additions and 43 deletions
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2
CMakeLists.txt
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@ -10,7 +10,7 @@ include(GNUInstallDirs)
################################
# set lib version here
set(GENERIC_LIB_VERSION "1.0.12")
set(GENERIC_LIB_VERSION "1.0.13")
set(GENERIC_LIB_SOVERSION "1")

2
dox
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@ -32,7 +32,7 @@ PROJECT_NAME = "TinyXML-2"
# This could be handy for archiving the generated documentation or
# if some version control system is used.
PROJECT_NUMBER = 1.0.12
PROJECT_NUMBER = 1.0.13
# Using the PROJECT_BRIEF tag one can provide an optional one line description
# for a project that appears at the top of each page and should give viewer

16
tinyxml2.cpp
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@ -422,16 +422,19 @@ void XMLUtil::ToStr( bool v, char* buffer, int bufferSize )
TIXML_SNPRINTF( buffer, bufferSize, "%d", v ? 1 : 0 );
}
/*
ToStr() of a number is a very tricky topic.
https://github.com/leethomason/tinyxml2/issues/106
*/
void XMLUtil::ToStr( float v, char* buffer, int bufferSize )
{
TIXML_SNPRINTF( buffer, bufferSize, "%f", v );
TIXML_SNPRINTF( buffer, bufferSize, "%.8g", v );
}
void XMLUtil::ToStr( double v, char* buffer, int bufferSize )
{
TIXML_SNPRINTF( buffer, bufferSize, "%f", v );
TIXML_SNPRINTF( buffer, bufferSize, "%.17g", v );
}
@ -497,12 +500,7 @@ char* XMLDocument::Identify( char* p, XMLNode** node )
}
// What is this thing?
// - Elements start with a letter or underscore, but xml is reserved.
// - Comments: <!--
// - Declaration: <?
// - Everything else is unknown to tinyxml.
//
// These strings define the matching patters:
static const char* xmlHeader = { "<?" };
static const char* commentHeader = { "<!--" };
static const char* dtdHeader = { "<!" };

7
tinyxml2.h
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@ -118,7 +118,7 @@ inline int TIXML_SNPRINTF( char* buffer, size_t size, const char* format, ... )
static const int TIXML2_MAJOR_VERSION = 1;
static const int TIXML2_MINOR_VERSION = 0;
static const int TIXML2_PATCH_VERSION = 12;
static const int TIXML2_PATCH_VERSION = 13;
namespace tinyxml2
{
@ -1321,6 +1321,11 @@ public:
XMLAttribute* a = FindOrCreateAttribute( name );
a->SetAttribute( value );
}
/// Sets the named attribute to value.
void SetAttribute( const char* name, float value ) {
XMLAttribute* a = FindOrCreateAttribute( name );
a->SetAttribute( value );
}
/**
Delete an attribute.

58
xmltest.cpp
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@ -1139,18 +1139,6 @@ int main( int argc, const char ** argv )
XMLTest( "Whitespace all space", true, 0 == doc.FirstChildElement()->FirstChild() );
}
#if 0 // the question being explored is what kind of print to use:
// https://github.com/leethomason/tinyxml2/issues/63
{
const char* xml = "<element attrA='123456789.123456789' attrB='1.001e9'/>";
XMLDocument doc;
doc.Parse( xml );
doc.FirstChildElement()->SetAttribute( "attrA", 123456789.123456789 );
doc.FirstChildElement()->SetAttribute( "attrB", 1.001e9 );
doc.Print();
}
#endif
{
// An assert should not fire.
const char* xml = "<element/>";
@ -1273,6 +1261,52 @@ int main( int argc, const char ** argv )
XMLTest("Move node from within <one> after <two>", xmlAfterTwo, printer4.CStr(), false);
}
{
const char* xml = "<svg width = \"128\" height = \"128\">"
" <text> </text>"
"</svg>";
XMLDocument doc;
doc.Parse(xml);
doc.Print();
}
#if 1
// the question being explored is what kind of print to use:
// https://github.com/leethomason/tinyxml2/issues/63
{
//const char* xml = "<element attrA='123456789.123456789' attrB='1.001e9' attrC='1.0e-10' attrD='1001000000.000000' attrE='0.1234567890123456789'/>";
const char* xml = "<element/>";
XMLDocument doc;
doc.Parse( xml );
doc.FirstChildElement()->SetAttribute( "attrA-f64", 123456789.123456789 );
doc.FirstChildElement()->SetAttribute( "attrB-f64", 1.001e9 );
doc.FirstChildElement()->SetAttribute( "attrC-f64", 1.0e9 );
doc.FirstChildElement()->SetAttribute( "attrC-f64", 1.0e20 );
doc.FirstChildElement()->SetAttribute( "attrD-f64", 1.0e-10 );
doc.FirstChildElement()->SetAttribute( "attrD-f64", 0.123456789 );
doc.FirstChildElement()->SetAttribute( "attrA-f32", 123456789.123456789f );
doc.FirstChildElement()->SetAttribute( "attrB-f32", 1.001e9f );
doc.FirstChildElement()->SetAttribute( "attrC-f32", 1.0e9f );
doc.FirstChildElement()->SetAttribute( "attrC-f32", 1.0e20f );
doc.FirstChildElement()->SetAttribute( "attrD-f32", 1.0e-10f );
doc.FirstChildElement()->SetAttribute( "attrD-f32", 0.123456789f );
doc.Print();
/* The result of this test is platform, compiler, and library version dependent. :("
XMLPrinter printer;
doc.Print( &printer );
XMLTest( "Float and double formatting.",
"<element attrA-f64=\"123456789.12345679\" attrB-f64=\"1001000000\" attrC-f64=\"1e+20\" attrD-f64=\"0.123456789\" attrA-f32=\"1.2345679e+08\" attrB-f32=\"1.001e+09\" attrC-f32=\"1e+20\" attrD-f32=\"0.12345679\"/>\n",
printer.CStr(),
true );
*/
}
#endif
// ----------- Performance tracking --------------
{
#if defined( _MSC_VER )