cBigUnsMulDiv.cpp File Reference

#include "pch.h"
#include "Math/cBigUnsigned.h"
#include "Math/cBigInteger.h"

Namespaces
	GrayLib

Macros
#define	GRAYLIB_HAVE_SSE2
#define	MULADDC_INIT
#define	MULADDC_CORE
#define	MULADDC_STOP    }

Detailed Description

Multiply helper functions.

Copyright

1992 - 2020 Dennis Robinson (http://www.menasoft.com)

Macro Definition Documentation

GRAYLIB_HAVE_SSE2

#define GRAYLIB_HAVE_SSE2

MULADDC_CORE

#define MULADDC_CORE

Value:

        s0 = ( *pSrc << k_BLOCKH_BITS ) >> k_BLOCKH_BITS;          \
        s1 = ( *pSrc >> k_BLOCKH_BITS ); pSrc++;            \
        rx = s0 * b1; r0 = s0 * b0;         \
        ry = s1 * b0; r1 = s1 * b1;         \
        r1 += ( rx >> k_BLOCKH_BITS );      \
        r1 += ( ry >> k_BLOCKH_BITS );      \
        rx <<= k_BLOCKH_BITS; ry <<= k_BLOCKH_BITS;             \
        r0 += rx; r1 += (r0 < rx);          \
        r0 += ry; r1 += (r0 < ry);          \
        r0 +=  nCarry; r1 += (r0 <  nCarry);          \
        r0 += *pDst; r1 += (r0 < *pDst);    \
        nCarry = r1; *(pDst++) = r0;

MULADDC_INIT

#define MULADDC_INIT

Value:

        {                       \
        BLOCK_t s0, s1;         \
        BLOCK_t r0, r1;                 \
        BLOCK_t rx, ry;         \
        BLOCK_t b0 = ( nMult << k_BLOCKH_BITS ) >> k_BLOCKH_BITS;       \
        BLOCK_t b1 = ( nMult >> k_BLOCKH_BITS );

MULADDC_STOP

#define MULADDC_STOP    }