TYPE __attribute__ ((noinline)) foo_sign (int *__restrict__ a, int *__restrict__ b, TYPE l, TYPE n) { TYPE i; for (i = l; n < i; i += C) *a++ = *b++ + 1; return i; } TYPE __attribute__ ((noinline)) bar_sign (int *__restrict__ a, int *__restrict__ b, TYPE l, TYPE n) { TYPE i; for (i = l; i < n; i -= C) *a++ = *b++ + 1; return i; } int __attribute__ ((noinline)) neq (int a, int b) { return a != b; } int a[1000], b[1000]; int fail; int main () { TYPE res; TYPE l; TYPE n; n = N_BASE; l = n - C; res = foo_sign (a, b, l, n); if (res != l) fail++; l = n; res = foo_sign (a, b, l, n); if (res != l) fail++; l = n + C; res = foo_sign (a, b, l, n); if (neq ((res - MIN) / C, 0)) fail++; n = N_BASE_DOWN; l = n - C; res = bar_sign (a, b, l, n); if (neq ((MAX - res) / C, 0)) fail++; l = n; res = bar_sign (a, b, l, n); if (res != l) fail++; l = n + C; res = bar_sign (a, b, l, n); if (res != l) fail++; if (fail) __builtin_abort (); return 0; }