src/libbiguint/bu_srbc.c


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/* ISC license. */

#include <skalibs/uint32.h>
#include <skalibs/biguint.h>

int bu_srbc (register uint32 *a, register unsigned int n, register int carry)
{
  while (n--)
  {
    register int c = a[n] & 1 ;
    a[n] = (a[n] >> 1) | (carry ? 0x80000000UL : 0) ;
    carry = c ;
  }
  return carry ;
}