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))
```