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iarith_divrem_s.c (471B)

      1 /* iarith: 32-bit SIGNED divide and remainder.
      2  *
      3  * volatile operands force a real `sdiv w` and the `msub w` that aarch64 uses
      4  * to compute the remainder (rem = a - (a/b)*b). Operands chosen so neither
      5  * -O0 nor -O1 can fold and no signed overflow / div-by-zero occurs.
      6  *
      7  *   1000 / 23 = 43   (43*23 = 989)
      8  *   1000 % 23 = 11
      9  *   43 - 11 + 10 = 42. */
     10 int test_main(void) {
     11   volatile int a = 1000, b = 23;
     12   int q = a / b;
     13   int r = a % b;
     14   return q - r + 10;
     15 }