Botan::donna128 Class Reference

#include <donna128.h>

Public Member Functions
	donna128 (const donna128 &)=default
	donna128 (uint64_t ll=0, uint64_t hh=0)
uint64_t	hi () const
uint64_t	lo () const
uint64_t	operator&= (uint64_t mask)
donna128 &	operator+= (const donna128 &x)
donna128 &	operator+= (uint64_t x)
donna128 &	operator= (const donna128 &)=default

Friends
uint64_t	operator& (const donna128 &x, uint64_t mask)
donna128	operator<< (const donna128 &x, size_t shift)
donna128	operator>> (const donna128 &x, size_t shift)

Detailed Description

Definition at line 15 of file donna128.h.

Constructor & Destructor Documentation

donna128() [1/2]

Botan::donna128::donna128 ( uint64_t  ll = 0, uint64_t  hh = 0  )

inline

Definition at line 18 of file donna128.h.

{ l = ll; h = hh; }

donna128() [2/2]

Botan::donna128::donna128 ( const donna128 &  )

default

Member Function Documentation

hi()

uint64_t Botan::donna128::hi ( ) const

inline

Definition at line 78 of file donna128.h.

{ return h; }

Referenced by Botan::operator*(), and Botan::operator|().

lo()

uint64_t Botan::donna128::lo ( ) const

inline

Definition at line 77 of file donna128.h.

{ return l; }

Referenced by Botan::combine_lower(), Botan::operator*(), and Botan::operator|().

operator&=()

uint64_t Botan::donna128::operator&= ( uint64_t  mask )

inline

Definition at line 52 of file donna128.h.

         {
         h = 0;
         l &= mask;
         return l;
         }

operator+=() [1/2]

donna128 & Botan::donna128::operator+= ( const donna128 &  x )

inline

Definition at line 59 of file donna128.h.

         {
         l += x.l;
         h += x.h;
 
         const uint64_t carry = (l < x.l);
         h += carry;
         return *this;
         }

References Botan::carry().

operator+=() [2/2]

donna128 & Botan::donna128::operator+= ( uint64_t  x )

inline

Definition at line 69 of file donna128.h.

         {
         l += x;
         const uint64_t carry = (l < x);
         h += carry;
         return *this;
         }

References Botan::carry().

operator=()

donna128 & Botan::donna128::operator= ( const donna128 &  )

default

Friends And Related Function Documentation

operator&

uint64_t operator& ( const donna128 &  x, uint64_t  mask  )

friend

Definition at line 47 of file donna128.h.

         {
         return x.l & mask;
         }

operator<<

donna128 operator<< ( const donna128 &  x, size_t  shift  )

friend

Definition at line 35 of file donna128.h.

         {
         donna128 z = x;
         if(shift > 0)
            {
            const uint64_t carry = z.l >> (64 - shift);
            z.l = (z.l << shift);
            z.h = (z.h << shift) | carry;
            }
         return z;
         }

operator>>

donna128 operator>> ( const donna128 &  x, size_t  shift  )

friend

Definition at line 23 of file donna128.h.

         {
         donna128 z = x;
         if(shift > 0)
            {
            const uint64_t carry = z.h << (64 - shift);
            z.h = (z.h >> shift);
            z.l = (z.l >> shift) | carry;
            }
         return z;
         }

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The documentation for this class was generated from the following file:

• src/lib/utils/donna128.h