softint/mul.c


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#include <stdint.h>

long softint_mul( long x, long y )
{

  int i;
  long result = 0;

  for (i = 0; i < (sizeof(long) << 3); i++) {
    if ((x & 0x1) == 1)
      result = result + y;

    x = x >> 1;
    y = y << 1;
  }

  return result;

}