Referencia del Archivo src/libdigidoc/openssl/crypto/idea/idea_lcl.h

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'defines'
#define	idea_mul(r, a, b, ul)
#define	n2ln(c, l1, l2, n)
#define	l2nn(l1, l2, c, n)
#define	n2l(c, l)
#define	l2n(l, c)
#define	s2n(l, c)
#define	n2s(c, l)
#define	E_IDEA(num)

---

Documentación de los 'defines'

#define E_IDEA

(

num

)

Valor:

x1&=0xffff; \
        idea_mul(x1,x1,*p,ul); p++; \
        x2+= *(p++); \
        x3+= *(p++); \
        x4&=0xffff; \
        idea_mul(x4,x4,*p,ul); p++; \
        t0=(x1^x3)&0xffff; \
        idea_mul(t0,t0,*p,ul); p++; \
        t1=(t0+(x2^x4))&0xffff; \
        idea_mul(t1,t1,*p,ul); p++; \
        t0+=t1; \
        x1^=t1; \
        x4^=t0; \
        ul=x2^t0; /* do the swap to x3 */ \
        x2=x3^t1; \
        x3=ul;

#define idea_mul	(		r,
			a,
			b,
			ul
	)

Valor:

ul=(unsigned long)a*b; \
if (ul != 0) \
        { \
        r=(ul&0xffff)-(ul>>16); \
        r-=((r)>>16); \
        } \
else \
        r=(-(int)a-b+1);

#define l2n	(		l,
			c
	)

Valor:

(*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
                         *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
                         *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
                         *((c)++)=(unsigned char)(((l)     )&0xff))

#define l2nn	(		l1,
			l2,
			c,
			n
	)

Valor:

{ \
                        c+=n; \
                        switch (n) { \
                        case 8: *(--(c))=(unsigned char)(((l2)    )&0xff); \
                        case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
                        case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
                        case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
                        case 4: *(--(c))=(unsigned char)(((l1)    )&0xff); \
                        case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
                        case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
                        case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
                                } \
                        }

#define n2l	(		c,
			l
	)

Valor:

(l =((unsigned long)(*((c)++)))<<24L, \
                         l|=((unsigned long)(*((c)++)))<<16L, \
                         l|=((unsigned long)(*((c)++)))<< 8L, \
                         l|=((unsigned long)(*((c)++))))

#define n2ln	(		c,
			l1,
			l2,
			n
	)

Valor:

{ \
                        c+=n; \
                        l1=l2=0; \
                        switch (n) { \
                        case 8: l2 =((unsigned long)(*(--(c))))    ; \
                        case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
                        case 6: l2|=((unsigned long)(*(--(c))))<<16; \
                        case 5: l2|=((unsigned long)(*(--(c))))<<24; \
                        case 4: l1 =((unsigned long)(*(--(c))))    ; \
                        case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
                        case 2: l1|=((unsigned long)(*(--(c))))<<16; \
                        case 1: l1|=((unsigned long)(*(--(c))))<<24; \
                                } \
                        }

#define n2s	(		c,
			l
	)

Valor:

(l =((IDEA_INT)(*((c)++)))<< 8L, \
                         l|=((IDEA_INT)(*((c)++)))      )

#define s2n	(		l,
			c
	)

Valor:

(*((c)++)=(unsigned char)(((l)     )&0xff), \
                         *((c)++)=(unsigned char)(((l)>> 8L)&0xff))