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- #include "os.h"
- #include <mp.h>
- #include "dat.h"
- // convert a little endian byte array (least significant byte first) to an mpint
- mpint*
- letomp(uchar *s, uint n, mpint *b)
- {
- int i=0, m = 0;
- mpdigit x=0;
- if(b == nil)
- b = mpnew(0);
- mpbits(b, 8*n);
- for(; n > 0; n--){
- x |= ((mpdigit)(*s++)) << i;
- i += 8;
- if(i == Dbits){
- b->p[m++] = x;
- i = 0;
- x = 0;
- }
- }
- if(i > 0)
- b->p[m++] = x;
- b->top = m;
- return b;
- }
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