From 0ea5fc66924303d1bf73ba283a383e2aadee02f2 Mon Sep 17 00:00:00 2001 From: neodarz Date: Sat, 11 Aug 2018 20:21:34 +0200 Subject: Initial commit --- docs/doxygen/nel/a02684.html | 268 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 268 insertions(+) create mode 100644 docs/doxygen/nel/a02684.html (limited to 'docs/doxygen/nel/a02684.html') diff --git a/docs/doxygen/nel/a02684.html b/docs/doxygen/nel/a02684.html new file mode 100644 index 00000000..b316f57c --- /dev/null +++ b/docs/doxygen/nel/a02684.html @@ -0,0 +1,268 @@ + + +NeL: NLPACS::CInt128 class Reference + + + +
+Main Page | Namespace List | Class Hierarchy | Alphabetical List | Data Structures | File List | Namespace Members | Data Fields | Globals | Related Pages | Search for 
+

NLPACS::CInt128 Class Reference

#include <edge_collide.h> +

+

Detailed Description

+A 128 bits integer.
Author:
Lionel Berenguier

+Nevrax France

+
Date:
2001
+ +

+ +

+Definition at line 48 of file edge_collide.h. + + + + + + + + + + + + + + + + +

Public Member Functions

bool operator< (const CInt128 &o) const
 compare 2 int128.

bool operator== (const CInt128 &o) const
 compare 2 int128.

void setMul (sint64 a, sint64 b)
 Compute a*b, and store in CInt128.


Data Fields

sint64 High
sint64 Low
+

Member Function Documentation

+

+ + + + +
+ + + + + + + + + + +
bool NLPACS::CInt128::operator< ( const CInt128 &  o  )  const [inline]
+
+ + + + + +
+   + + +

+compare 2 int128. +

+ +

+Definition at line 99 of file edge_collide.h. +

+References High, and Low. +

+

00100         {
+00101                 if(High!=o.High)
+00102                         return High<o.High;
+00103                 else
+00104                         return Low<o.Low;
+00105         }
+
+

+ + + + +
+ + + + + + + + + + +
bool NLPACS::CInt128::operator== ( const CInt128 &  o  )  const [inline]
+
+ + + + + +
+   + + +

+compare 2 int128. +

+ +

+Definition at line 108 of file edge_collide.h. +

+References High, and Low. +

+

00109         {
+00110                 return High==o.High && Low==o.Low;
+00111         }
+
+

+ + + + +
+ + + + + + + + + + + + + + + + + + + +
void NLPACS::CInt128::setMul ( sint64  a,
sint64  b
)  [inline]
+
+ + + + + +
+   + + +

+Compute a*b, and store in CInt128. +

+ +

+Definition at line 57 of file edge_collide.h. +

+References High, Low, sint, sint64, uint32, and uint64. +

+Referenced by NLPACS::CRational64::operator<(), and NLPACS::CRational64::operator==(). +

+

00058         {
+00059                 // reset and backup sign.
+00060                 sint    sgn=0;
+00061                 if(a<0)
+00062                         sgn++, a=-a;
+00063                 if(b<0)
+00064                         sgn--, b=-b;
+00065 
+00066 
+00067                 // compute unsigned version.
+00068                 uint64  high, low, hl1, hl2, oldLow;
+00069                 uint32  mask32= 0xFFFFFFFF;
+00070                 high= (a>>32) * (b>>32);
+00071                 low=  (a&mask32) * (b&mask32);
+00072                 hl1=  (a&mask32) * (b>>32);
+00073                 hl2=  (a>>32) * (b&mask32);
+00074                 // add/adc hl1.
+00075                 oldLow= low;
+00076                 low+= (hl1&mask32) << 32;
+00077                 if(low<oldLow)
+00078                         high++;
+00079                 high+= (hl1>>32);
+00080                 // add/adc hl2.
+00081                 oldLow= low;
+00082                 low+= (hl2&mask32) << 32;
+00083                 if(low<oldLow)
+00084                         high++;
+00085                 high+= (hl2>>32);
+00086 
+00087 
+00088                 // extend with sign.
+00089                 High= high;
+00090                 Low= low;
+00091                 if(sgn!=0)
+00092                 {
+00093                         High= -High;
+00094                         Low= -Low;
+00095                 }
+00096         }
+
+

Field Documentation

+

+ + + + +
+ + +
sint64 NLPACS::CInt128::High +
+
+ + + + + +
+   + + +

+ +

+Definition at line 51 of file edge_collide.h. +

+Referenced by operator<(), operator==(), and setMul().

+

+ + + + +
+ + +
sint64 NLPACS::CInt128::Low +
+
+ + + + + +
+   + + +

+ +

+Definition at line 52 of file edge_collide.h. +

+Referenced by operator<(), operator==(), and setMul().

+

The documentation for this class was generated from the following file: +
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+ + -- cgit v1.2.1