// Test: compound assignment operators on global variables
// Ensures += -= *= /= %= &= |= ^= <<= >>= all do load-modify-store

#import "modules/std.sx";

g_add : s64 = 10;
g_sub : s64 = 10;
g_mul : s64 = 10;
g_div : s64 = 100;
g_mod : s64 = 10;
g_and : s64 = 0xff;
g_or  : s64 = 0x0f;
g_xor : s64 = 0xff;
g_shl : s64 = 1;
g_shr : s64 = 256;

main :: () -> void {
    // += repeated: should accumulate, not reset
    g_add += 1;
    g_add += 1;
    g_add += 1;
    print("add: {}\n", g_add);  // 13

    g_sub -= 3;
    g_sub -= 2;
    print("sub: {}\n", g_sub);  // 5

    g_mul *= 2;
    g_mul *= 3;
    print("mul: {}\n", g_mul);  // 60

    g_div /= 5;
    g_div /= 4;
    print("div: {}\n", g_div);  // 5

    g_mod %= 3;
    print("mod: {}\n", g_mod);  // 1

    g_and &= 0x0f;
    print("and: {}\n", g_and);  // 15

    g_or |= 0xf0;
    print("or: {}\n", g_or);   // 255

    g_xor ^= 0x0f;
    print("xor: {}\n", g_xor); // 240

    g_shl <<= 4;
    g_shl <<= 2;
    print("shl: {}\n", g_shl); // 64

    g_shr >>= 3;
    g_shr >>= 2;
    print("shr: {}\n", g_shr); // 8
}