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#include <limits.h>
 
signed int si_a;
signed int si_b;
signed int sum;

void func(void) {
  /* Initialize si_a, si_b and sum*/

  if ( ((si_a^si_b) |
       (((si_a^(~(si_a^si_b) & INT_MIN)) +
         si_b)^si_b)) >= 0) {
     /* Handle error condition */
  } else {
    sum = si_a + si_b;
  }
  /* ... */
}

#include <limits.h>
 
signed long s_a;
signed long s_b;
signed long result;

void func(void) {
  /* Initialize s_a, s_b and result */
  if ((s_b == 0 ) || ((s_a == LONG_MIN) && (s_b == -1))) {
    /* Handle error condition */
  } else {
    result = s_a % s_b;
  }

  /* ... */
}

#include <limits.h>
 
signed long s_a;
signed long s_b;
signed long result;

void func(void) {
  /* Initialize s_a, s_b and result */

  if (s_b == 0) {
    /* Handle error condition */
  } else {
    if ((s_b < 0) && (s_b != LONG_MIN)) {
      s_b = -s_b;
    }
    result = s_a % s_b;
  }

  /* ... */
}