#include "cryptlib.h"
#include "bn_lcl.h"
-BN_ULONG BN_mod_word(a, w)
-BIGNUM *a;
-unsigned long w;
+BN_ULONG BN_mod_word(const BIGNUM *a, BN_ULONG w)
{
#ifndef BN_LLONG
BN_ULONG ret=0;
for (i=a->top-1; i>=0; i--)
{
#ifndef BN_LLONG
- ret=((ret<<BN_BITS4)|((a->d[i]>>BN_BITS4)&BN_MASK2l))%(unsigned long)w;
- ret=((ret<<BN_BITS4)|(a->d[i]&BN_MASK2l))%(unsigned long)w;
+ ret=((ret<<BN_BITS4)|((a->d[i]>>BN_BITS4)&BN_MASK2l))%w;
+ ret=((ret<<BN_BITS4)|(a->d[i]&BN_MASK2l))%w;
#else
ret=(BN_ULLONG)(((ret<<(BN_ULLONG)BN_BITS2)|a->d[i])%
(BN_ULLONG)w);
return((BN_ULONG)ret);
}
-BN_ULONG BN_div_word(a, w)
-BIGNUM *a;
-unsigned long w;
+BN_ULONG BN_div_word(BIGNUM *a, BN_ULONG w)
{
BN_ULONG ret;
int i;
BN_ULONG l,d;
l=a->d[i];
- d=bn_div64(ret,l,w);
+ d=bn_div_words(ret,l,w);
ret=(l-((d*w)&BN_MASK2))&BN_MASK2;
a->d[i]=d;
}
- if (a->d[a->top-1] == 0)
+ if ((a->top > 0) && (a->d[a->top-1] == 0))
a->top--;
return(ret);
}
-int BN_add_word(a, w)
-BIGNUM *a;
-unsigned long w;
+int BN_add_word(BIGNUM *a, BN_ULONG w)
{
BN_ULONG l;
int i;
return(1);
}
-int BN_sub_word(a, w)
-BIGNUM *a;
-unsigned long w;
+int BN_sub_word(BIGNUM *a, BN_ULONG w)
{
int i;
return(1);
}
-int BN_mul_word(a,w)
-BIGNUM *a;
-unsigned long w;
+int BN_mul_word(BIGNUM *a, BN_ULONG w)
{
BN_ULONG ll;
a->d[a->top++]=ll;
}
}
- return(0);
+ return(1);
}