-rw-r--r-- 198 saferewrite-20210915/src/int32_nonzeromask/shift2/nonzero.c
#include <inttypes.h>

int32_t int32_negativemask(int32_t x)
{
  return x >> 31;
}

int32_t int32_nonzeromask(int32_t x)
{
  if (int32_negativemask(x)) return -1;
  return int32_negativemask(-x);
}